Synthetic method of reaction type PU (polyurethane) hot melt adhesive prepolymer

The invention relates to a synthetic method of a reaction type PU (polyurethane) hot melt adhesive prepolymer. MDI (methylene diphenyl diisocyanate) has a polymerization reaction with polyester diol, polycaprolactone diol and polytetrahydrofuran diol, N,N'-di-sec-butyl-4,4'-methylenedianil...

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Bibliographic Details
Main Authors XIE HAIHUA, XU YUAN, WANG JIANBIN, CHEN TIANAN
Format Patent
LanguageEnglish
Published 04.11.2015
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
DYES
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Summary:The invention relates to a synthetic method of a reaction type PU (polyurethane) hot melt adhesive prepolymer. MDI (methylene diphenyl diisocyanate) has a polymerization reaction with polyester diol, polycaprolactone diol and polytetrahydrofuran diol, N,N'-di-sec-butyl-4,4'-methylenedianiline is used as a chain extender in the reaction process, the high-strength reaction type PU hot melt adhesive prepolymer is obtained, and the prepolymer is applied to a reaction type PU hot melt adhesive and has higher bonding strength and long-term storage stability.
Bibliography:Application Number: CN20151522009