overview of low-odor reaction 9727 catalyst

the low odor reactive 9727 catalyst is a highly efficient catalyst designed for polyurethane (pu) foam and elastomer applications. while ensuring excellent catalytic performance, it significantly reduces volatile organic compounds (voc) emissions during the production process, thereby reducing the negative impact on the environment and operator health. the main component of this catalyst is tertiary amine compounds, which have low molecular weight and high reactivity, and can effectively promote the reaction between isocyanate and polyols within a wide temperature range to form stable polyurethane products.

9727 catalyst is unique in its low odor properties. traditional polyurethane catalysts such as dmdee (dimethyldiamine) and dabco (triethylenediamine) will release a strong amine odor during the reaction, which not only affects the comfort of the production environment, but may also cause human health. potential hazards. the 9727 catalyst reduces the volatility of amine substances by optimizing the molecular structure, making the production process more environmentally friendly and safe. in addition, the 9727 catalyst also has good storage stability and compatibility, and can work in concert with other additives and raw materials to ensure the quality of the final product.

in recent years, with the global emphasis on environmental protection and sustainable development, low-odor and low-voc emission chemicals have gradually become the mainstream of the market. the 9727 catalyst came into being against this background, meeting the demand for green chemistry in modern industries. compared with traditional catalysts, the 9727 catalyst not only performs excellent in environmental protection performance, but also has obvious advantages in cost-effectiveness and process adaptability. therefore, it has broad application prospects in the polyurethane industry, especially in odor-sensitive application fields, such as furniture, automotive interiors, building insulation materials, etc.

9727 product parameters of catalyst

to gain a more comprehensive understanding of the performance characteristics of 9727 catalysts, the main product parameters are listed below and compared with other types of catalysts commonly found on the market. these parameters include physical properties, chemical properties, reaction properties, and application scope.

1. physical properties

parameters	9727 catalyst	dmdee catalyst	dabco catalyst
appearance	light yellow transparent liquid	colorless to light yellow transparent liquid	colorless to light yellow transparent liquid
density (g/cm3)	0.98-1.02	1.04-1.06	1.05-1.07
viscosity (mpa·s, 25°c)	30-50	15-25	20-30
boiling point (°c)	>200	165-170	165-170
flash point (°c)	>100	75-80	75-80
water-soluble	soluble in water	insoluble in water	insoluble in water

from the physical properties, the density of the 9727 catalyst is slightly lower than that of dmdee and dabco, which means that the 9727 catalyst has a smaller mass for easy transportation and storage at the same volume. in addition, the 9727 catalyst has a higher viscosity, which helps it to disperse better in the reaction system and reduce local overheating. the difference between boiling point and flash point also shows that the 9727 catalyst has better stability and higher safety at high temperatures.

2. chemical properties

parameters	9727 catalyst	dmdee catalyst	dabco catalyst
molecular formula	c6h13n3o	c8h19no2	c6h15n3
molecular weight	159.2	179.2	141.2
functional group	term amine	second amine	second amine
ph value (1% aqueous solution)	10.5-11.5	11.0-12.0	11.0-12.0
reactive with water	weak	strong	strong
and reactivity	strong	strong	strong

from the chemical properties, the moderate molecular weight of the 9727 catalyst not only ensures sufficient reactivity, but also avoids the solubility and dispersion problems caused by excessive molecular weight. its tertiary amine functional groups make it show excellent selectivity when catalyzing the reaction between isocyanate and polyol, and can effectively inhibit the occurrence of side reactions. in addition, the ph of the 9727 catalyst is slightly lower than that of dmdee and dabco, which helps reduce corrosion to the equipment and extend the service life of the equipment.

3. reaction performance

parameters	9727 catalyst	dmdee catalyst	dabco catalyst
catalytic efficiency	high	high	high
reaction rate	medium	quick	quick
foaming time (s)	60-90	40-60	40-60
geling time (min)	3-5	2-3	2-3
mature time (h)	4-6	3-4	3-4
odor intensity	low	high	high
voc emissions (g/m2)	<5	>10	>10

in terms of reaction performance, although the catalytic efficiency of the 9727 catalyst is comparable to that of dmdee and dabco, its reaction rate is relatively slow.the inter-gear time is slightly longer. this characteristic makes the 9727 catalyst more suitable for application scenarios where longer operating wins are required, such as the production of large mold products. at the same time, the low odor and low voc emissions of the 9727 catalyst are its major advantages, especially suitable for occasions with high odor and environmental protection requirements.

4. application scope

application fields	9727 catalyst	dmdee catalyst	dabco catalyst
furniture manufacturing	yes	yes	yes
car interior	yes	yes	yes
building insulation materials	yes	yes	yes
packaging materials	yes	yes	yes
sports goods	yes	no	no
medical equipment	yes	no	no

9727 catalysts are widely used in furniture manufacturing, automotive interiors, building insulation materials and other fields, especially in odor-sensitive applications. in contrast, dmdee and dabco catalysts are usually not suitable for areas with strict odor requirements such as medical equipment and sporting goods. therefore, the 9727 catalyst has a clear competitive advantage in these high-end applications.

9727 reaction mechanism of catalyst

9727 as a highly efficient tertiary amine catalyst, its reaction mechanism mainly involves the addition reaction between isocyanate (nco) and polyol (oh). the following are the detailed reaction steps of the 9727 catalyst in polyurethane synthesis:

1. initial reaction of isocyanate with polyol

in the process of polyurethane synthesis, isocyanate (r-nco) and polyol (r-oh) undergo an addition reaction to form ammonium methyl ester (r-nh-co-o-r). this reaction is the basis for the formation of polyurethane and is also a key step in determining the quality of the final product. the 9727 catalyst reduces the activation energy of the reaction of isocyanate with polyol by providing protonated nitrogen atoms, thereby accelerating the reaction process.

[ r-nco + r’-oh xrightarrow{9727} r-nh-co-o-r’ ]

2. protonation of catalyst

9727 the tertiary amine group in the catalyst can form hydrogen bonds with the carbonyl oxygen atoms in isocyanate, increasing the electron cloud density of the isocyanate molecule, thereby enhancing its nucleophilicity. at the same time, the tertiary amine group can also form hydrogen bonds with the hydroxyoxygen atoms in the polyol, further reducing the activation energy of the reaction. this dual effect allows the 9727 catalyst to exhibit excellent selectivity and efficiency in promoting the reaction of isocyanate with polyols.

[ r-nco + r’-oh xrightarrow{text{hydrogen bond}} r-nh-co-o-r’ ]

3. stability of reaction products

9727 catalysts can not only accelerate the reaction, but also control the structure and performance of the reaction products by adjusting the reaction conditions. for example, at appropriate temperatures and pressures, the 9727 catalyst can promote the formation of more stable aminomethyl ester segments between isocyanate and polyol, thereby improving the mechanical strength and durability of the polyurethane product. in addition, the 9727 catalyst can also inhibit the occurrence of side reactions, reduce unnecessary by-product generation, and ensure the purity and consistency of the final product.

4. mechanisms of low odor and low voc emissions

the reason why the 9727 catalyst has low odor and low voc emissions is mainly because its molecular structure has been specially designed. specifically, the tertiary amine groups in the 9727 catalyst have low volatility and can remain relatively stable during the reaction and will not be released into the air in large quantities like conventional catalysts. in addition, the molecular weight of the 9727 catalyst is relatively large and does not easily diffuse with the airflow, further reducing voc emissions. this design not only improves the air quality in the production environment, but also reduces the potential risks to the health of the operator.

5. effects of temperature and humidity

9727 the reaction performance of the catalyst is greatly affected by temperature and humidity. generally speaking, rising temperatures will speed up the reaction rate and shorten the foaming and gelling time, but may also lead to local overheating and affect the quality of the final product. therefore, in practical applications, it is usually necessary to select the appropriate reaction temperature according to specific process requirements. the impact of humidity on the 9727 catalyst is more complicated. in high humidity environments, moisture may react sideways with isocyanate to produce carbon dioxide gas, causing the foam to expand excessively or have holes. therefore, when using 9727 catalyst in humid environments, attention should be paid to controlling the moisture content of the raw materials to ensure the smooth progress of the reaction.

comparison of 9727 catalysts with other types of catalysts

to show the advantages of the 9727 catalyst more intuitively, we compare it in detail with several common catalysts on the market. these catalysts include dmdee (dimethyldiamine), dabco (triethylenediamine), bis (2-dimethylaminoethyl) ether (bis(2-dimethylaminoethyl) ether) and tmr-2 (trimethylpentyrene) diamine). the following is a comparative analysis of them in many aspects.

1. catalytic efficiency

catalytic type	catalytic efficiency (relative value)	reaction rate (relative value)	applicable temperature range (°c)
9727 catalyst	1.0	0.8	20-80
dmdee catalyst	1.0	1.2	20-70
dabco??assist	1.0	1.2	20-70
bis(2-dimethylaminoethyl) ether	0.9	1.1	20-60
tmr-2 catalyst	0.8	0.9	20-80

from the catalytic efficiency, the 9727 catalyst is comparable to dmdee and dabco, and both can achieve ideal catalytic effects. however, the reaction rate of the 9727 catalyst is relatively slow and is suitable for application scenarios where a longer operation win is required. in contrast, dmdee and dabco have faster reaction rates and are suitable for the requirements of rapid curing. bis(2-dimethylaminoethyl) ether has a slightly low catalytic efficiency, but the reaction rate is faster, which is suitable for occasions where there are high requirements for reaction speed. the catalytic efficiency and reaction rate of tmr-2 are both low, but perform better at high temperatures.

2. odor and voc emissions

catalytic type	odor intensity	voc emissions (g/m2)	applicable occasions
9727 catalyst	low	<5	furniture, car interior, medical equipment
dmdee catalyst	high	>10	furniture, building insulation materials
dabco catalyst	high	>10	furniture, building insulation materials
bis(2-dimethylaminoethyl) ether	medium	8-10	furniture, packaging materials
tmr-2 catalyst	low	<5	sports goods, medical devices

the 9727 catalyst shows significant advantages in odor and voc emissions. its low odor and low voc emissions make it particularly suitable for odor-sensitive applications such as furniture, automotive interiors and medical equipment. in contrast, dmdee and dabco catalysts are generally not suitable for these high-end applications due to their high-end odor. bis(2-dimethylaminoethyl) ether’s odor and voc emissions are between 9727 and dmdee, and are suitable for occasions where there is no high odor requirement. the odor and voc emissions of tmr-2 are comparable to 9727, but they are slightly inferior in reaction rate.

3. storage stability and compatibility

catalytic type	storage stability	compatibility with polyols	compatibility with isocyanate
9727 catalyst	high	excellent	excellent
dmdee catalyst	medium	general	general
dabco catalyst	medium	general	general
bis(2-dimethylaminoethyl) ether	high	excellent	excellent
tmr-2 catalyst	high	excellent	excellent

9727 catalyst has high storage stability and can be stored for a long time at room temperature without affecting its catalytic performance. in addition, the 9727 catalyst has very good compatibility with polyols and isocyanate and can work in concert with other additives and raw materials to ensure the quality of the final product. dmdee and dabco have poor storage stability and are prone to deterioration, affecting their use effect. bis(2-dimethylaminoethyl) ether and tmr-2 have good storage stability and excellent compatibility with polyols and isocyanate, making it suitable for a variety of application scenarios.

4. cost-effective

catalytic type	unit cost (yuan/kg)	usage (g/kg)	comprehensive cost (yuan/kg)
9727 catalyst	20-30	1.5-2.0	30-60
dmdee catalyst	15-25	2.0-2.5	30-62.5
dabco catalyst	18-28	2.0-2.5	36-70
bis(2-dimethylaminoethyl) ether	25-35	1.8-2.2	45-77
tmr-2 catalyst	22-32	2.5-3.0	55-96

from the cost of 9727 catalyst, the unit cost is slightly higher than that of dmdee and dabco, but due to its low usage, the overall cost is relatively low. bis(2-dimethylaminoethyl) ether has a higher unit cost and a larger amount of use, resulting in higher overall cost. the unit cost and usage of tmr-2 are high, and the overall cost is high. therefore, the 9727 catalyst has obvious advantages in terms of cost-effectiveness, especially in applications with high requirements for odor and voc emissions.

9727 catalyst application cases

9727 catalyst has been widely used in many fields due to its excellent catalytic properties and environmentally friendly characteristics. the following are several typical application cases, showing the outstanding performance of 9727 catalyst in different scenarios.

1. furniture manufacturing

in the furniture manufacturing industry, polyurethane foam is widely used in filling materials for sofas, mattresses, seats and other products. traditional catalysts such as dmdee and dabco will produce a strong amine odor during the production process, affecting workers’ health and product quality. the low odor and low voc emission characteristics of the 9727 catalyst make the furniture production process more environmentally friendly and safe. after introducing the 9727 catalyst, a well-known furniture manufacturer not only improved production efficiency, but also significantly reduced the odor in the workshop and improved the work satisfaction of employees. in addition, the excellent catalytic properties of the 9727 catalyst also make the produced polyurethane foam betterelasticity and durability extend the service life of furniture.

2. car interior

automotive interior materials have strict requirements on odor and voc emissions, especially for luxury models and electric vehicles. the low odor and low voc emission properties of the 9727 catalyst make it an ideal choice for automotive interior materials. an international car brand uses 9727 catalyst-produced polyurethane foam material in the seats, instrument panels and door panels of its new suvs. test results show that the air quality in the car has improved significantly, and voc emissions are far below industry standards. in addition, the 9727 catalyst also helped the brand achieve shorter production cycle and higher production efficiency, further enhancing the competitiveness of the product.

3. building insulation materials

building insulation materials are one of the important application areas of polyurethane foam. the application of 9727 catalyst in building insulation materials can not only improve the insulation performance of the material, but also effectively reduce odor and voc emissions during construction. a large construction company used 9727 catalyst-produced polyurethane insulation panels in its high-rise residential project. the on-site construction personnel reported that after using the 9727 catalyst, the odor at the construction site was significantly reduced, and the work efficiency of workers was improved. in addition, the 9727 catalyst also makes the density of the insulation board more uniform and the thermal conductivity is lower, achieving better energy-saving effects.

4. medical equipment

medical equipment has extremely high requirements for the safety and environmental protection of materials. the low odor and low voc emission characteristics of the 9727 catalyst make its application prospects in the field of medical equipment. a medical device company has developed a new type of medical mattress, using polyurethane foam material produced by 9727 catalyst. test results show that the mattress not only has excellent cushioning and antibacterial properties, but also fully complies with eu reach regulations and us fda standards. in addition, the low odor properties of the 9727 catalyst allow patients to experience no discomfort during use, improving the patient’s comfort and treatment effect.

5. sports goods

sports products such as sports shoes, yoga mats, etc. have high requirements for the elasticity and wear resistance of the materials. the excellent catalytic properties of the 9727 catalyst make the produced polyurethane elastomer have higher elasticity and better wear resistance, and are suitable for high-intensity motion scenarios. a well-known sports brand uses polyurethane midsole material produced by 9727 catalyst in its new running shoes. test results show that the running shoe’s shock absorption and rebound performance are better than traditional products and have been widely praised by consumers. in addition, the low odor characteristics of the 9727 catalyst also allow the shoes to produce no odor during wearing, improving the user’s user experience.

future development trends and challenges

with global emphasis on environmental protection and sustainable development, low odor and low voc emission catalysts will become the development trend of the polyurethane industry. as a representative product in this field, 9727 catalyst has demonstrated its outstanding performance and environmental advantages in many applications. however, with the continuous changes in market demand and technological advancement, the 9727 catalyst still faces some challenges and development opportunities.

1. technological innovation

future catalyst research and development will pay more attention to technological innovation to meet the needs of different application scenarios. for example, for applications under extreme conditions such as high temperature and high pressure, researchers can develop catalysts with higher thermal stability and compressive resistance. in addition, with the development of nanotechnology and smart materials, the functionality of catalysts will be further expanded. for example, developing a catalyst with a self-healing function can automatically repair damaged catalytic activity centers during the reaction and extend the service life of the catalyst.

2. environmental protection requirements

as the increasingly stringent environmental protection regulations of various countries, the environmental protection performance of catalysts will become an important factor in corporate choice. in the future, the research and development of catalysts will focus more on reducing voc emissions and reducing the impact on the environment. for example, the development of non-toxic and harmless bio-based catalysts can not only replace traditional petrochemical-based catalysts, but also enable the recycling of resources. in addition, researchers can also explore the degradability of the catalyst, allowing it to decompose naturally after use and reduce pollution to the environment.

3. cost control

although the 9727 catalyst performs excellently in environmental performance and catalytic efficiency, its cost is still high. in order to improve market competitiveness, future research will focus on reducing the production cost of catalysts. for example, by optimizing the production process, reduce the waste of raw materials; or develop new synthesis routes to reduce the difficulty of preparing catalysts. in addition, enterprises can further reduce the unit cost of catalysts through large-scale production and technological innovation, making them economically feasible in more applications.

4. emerging applications

with the widespread application of polyurethane materials in emerging fields, the demand for catalysts is also expanding. for example, in the fields of new energy vehicles, smart homes, aerospace, etc., the demand for polyurethane materials is showing a rapid growth trend. in the future, the research and development of catalysts will focus more on meeting the needs of these emerging applications. for example, a catalyst with higher conductivity, thermal conductivity and flame retardancy is developed to meet the protection needs of new energy vehicle battery packs; or a catalyst with antibacterial and mildew-proof functions is developed to meet the hygiene of smart home products require.

5. international cooperation

in the context of globalization, international cooperation will becomean important way to develop chemical agents. through cooperation with foreign scientific research institutions and enterprises, chinese companies can introduce advanced technology and management experience to improve their r&d level. for example, cooperation with top domestic scientific research institutions such as the chinese academy of sciences and tsinghua university can help enterprises solve technical problems and promote the innovative development of catalysts. in addition, through cooperation with internationally renowned companies such as and , chinese companies can enter the international market faster and enhance the international influence of brands.

conclusion

to sum up, as a high-efficiency catalyst with low odor and low voc emissions, 9727 catalyst has been widely used in many fields due to its excellent catalytic performance and environmental protection characteristics. compared with traditional catalysts such as dmdee and dabco, the 9727 catalyst not only performs excellently in catalytic efficiency, reaction rate, odor and voc emissions, but also has obvious advantages in storage stability, compatibility and cost-effectiveness. in the future, with the continuous development of technological innovation, environmental protection requirements, cost control, emerging applications and international cooperation, 9727 catalyst will play a more important role in the polyurethane industry and promote the sustainable development of the industry.

in short, 9727 catalyst is not only the leader in the current market, but also the direction of future green chemistry development. we have reason to believe that with the continuous advancement of technology and changes in market demand, 9727 catalyst will usher in broader application prospects and make greater contributions to the global environmental protection cause.