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What is the function of polyurethane elastomers
2026-07-25Simple summary: It is the basic raw material for manufacturing polyurethane elastomers (PU rubber), which reacts and solidifies with chain extenders to produce a high elasticity and wear-resistant polymer material with properties between ordinary rubber and engineering plastics.
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What are the production processes of polyester polyols
2026-05-231、 Conventional melt condensation method Feeding: Dicarboxylic acid and polyol are fed into the reaction vessel at once, with an appropriate excess of alcohol; Heating esterification: esterification reaction occurs at 140-200 ℃, generating water and continuously evaporating it;
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What is the function of Solvent resistant polyester polyol
2026-05-231、 Film forming function (the most basic function) After drying and curing, polyurethane dispersion or solvent based PU resin will form a continuous and flexible polymer film, which forms a protective film on the surface of leather or artificial leather substrate, firmly fixing fillers, colorants, and additives to prevent pigment and powder from falling off.
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