Commonly used products in the field of polyurethane foam

Application areas: polyurethane rigid foam, flexible foam, self-skinning, shoe materials
Characteristics: delayed, heat-sensitive
Function: prolonging emulsion time, prolonging drawing time
Use system: MDI/TDI/PAPI/mixed isocyanate
Special amine delayed gel catalyst, providing excellent pre-flow, delaying drawing time, not affecting post-curing, accelerating product release.
Diol solution of modified bis(dimethylaminoethyl) ether, delayed foaming catalyst, delayed emulsification time, improve fluidity, shorten demoulding time.
Delayed gel catalyst, improve fluidity, good open porosity. Used for moulding high resilience, self-skinning, etc.
Delayed foaming catalyst, can improve the carrying capacity of foam. Used in moulding high resilience, self-skinning, microcellular foaming, etc.
Modified triethylene diamine diol solution, gel catalyst with delayed action, can improve fluidity and shorten demoulding time.
Commonly used products in the field of polyurethane CASE
Application areas: polyurethane coatings, adhesives, elastomers, polyurethane acrylic coatings, fabric coatings, polyurethane pastes, leather finishes, composites, etc.
Characteristics: Delayed, heat-sensitive
Function: Extend the open time, delay the rise of viscosity, does not affect the post-curing
Use system: MDI/TDI/IPDI/HDI/H12MDI/ADI/XDI/mixed isocyanate
Delayed catalyst effect picture Introduction: In CASE field (adhesives, coatings, elastomers), the most commonly used catalyst is DY-12 (dibutyltin dilaurate), which has good selectivity to -NCO and -OH and high activity, but in the preparation of complex products, the operation time given to the workers is short, and it can’t satisfy the construction demand, in this condition, Shanghai Deyin Chemical Co. Ltd. has developed a series of delayed catalysts to recommend more suitable products for different isocyanate systems and construction conditions.
Used in polyurethane adhesives, coatings, elastomers, composites and other fields.
Used in polyurethane adhesives, coatings, elastomers, composites, etc.
Used in polyurethane elastomers, adhesives, sealants, elastic paints, leather finishing agents and other industries.
Used in one-component polyurethane adhesives, coatings, leather finishing agents and other industries
For polyurethane elastomers, adhesives, sealants, elastic paints, leather finishing agents and other industries
For polyurethane elastomers, adhesives, sealants, elastic paints, leather finishing agents and other industries
Used in polyurethane adhesives, leather finishing agents, coatings, microporous elastomers, etc.
Used in polyurethane adhesives, coatings, microporous elastomers, etc.
Recommended reading:
Non-emissive polyurethane catalyst/Dabco NE1060 catalyst
High Quality N-(dimethylaminopropyl)diisopropanolamine / CAS 63469-23-8 / N-(3-dimethyl amino propyl)-N N-diisopropanolamine
Toyocat ETS Foaming catalyst Tosoh
BDMAEE Exporter
Jeffcat ZF-22

The Magic of Catalysts: Explaining How They Work

I. What is a catalyst?
A catalyst is a substance that speeds up the process of a chemical reaction, but is not involved in the chemical reaction itself. The addition of a catalyst can increase the efficiency of a chemical reaction by greatly reducing the time and temperature required for it to reach equilibrium.
Classification of catalysts
Catalysts are mainly divided into two categories: one is inorganic catalysts, such as metal catalysts, oxide catalysts, acid-base catalysts, etc.; and the other is organic catalysts, such as enzyme catalysts, biocatalysts and so on.
The working principle of catalyst
The working principle of catalyst is based on the adsorption and dissociation of reactants, as well as the intermediate formation and cleavage processes occurring on the catalyst surface. The following are the basic steps in the working principle of a catalyst:
1. adsorption: the catalyst is able to adsorb on the surface of reactant molecules, changing the charge distribution and molecular structure of the reactant molecules so that they are easy to undergo chemical reactions on the catalyst.
2. Activation: After adsorbing the reactants, the catalyst stimulates the molecules to undergo chemical reactions by providing electrons, dismantling chemical bonds, or triggering charge transfers between molecules so that the energy adsorbed by the reactants is reduced.

3. Reaction: the formation of intermediates on the surface of the catalyst and their reaction, i.e. the catalyst acts as a site for the reaction and facilitates the chemical change of the reactants into the desired product.
4. Dissociation: the resulting products leave the surface of the catalyst so that the catalyst can again adsorb new reactant molecules.
IV. Role of catalyst
As a special substance, catalyst can help reactant molecules combine and react more quickly and easily, in addition, catalyst also has the following roles:
1. reduce reaction activation energy: catalysts make it easier to combine reactant molecules into desired products by adsorption and activation of reactant molecules, and they can reduce the activation energy needed for the reaction and accelerate the reaction speed.
2. Improvement of reaction selectivity: catalysts can control the location and direction of the reaction so that a specific chemical reaction occurs without causing unnecessary side reactions.
3. Improvement of reaction efficiency: catalysts can increase the efficiency of the reaction, reduce reaction time and energy consumption, save raw materials and accelerate the preparation of products.
V. Conclusion
Catalysts play a vital role in chemical reactions. Through the process of adsorption, activation, reaction and dissociation, catalysts can accelerate the chemical reaction, improve the reaction efficiency and increase the reaction selectivity, which makes the chemical synthesis more accurate and efficient. Therefore, catalysts have become an important and indispensable part of the modern chemical industry.

Related reading:



Dabco NE1060/Non-emissive polyurethane catalyst

High efficiency amine catalyst/Dabco amine catalyst




Bismuth 2-Ethylhexanoate

High Quality BDMA / 103-83-3 / Benzyldimethylamine / N,N-dimthylbenzylamine

Toyocat ETS Foaming catalyst Tosoh

Jeffcat ZF-22

Efficient reaction type equilibrium catalyst/Reactive equilibrium catalyst