METHOD FOR PRODUCING POLYISOCYANATE

PROBLEM TO BE SOLVED: To provide a method for producing a polyisocyanate having improved compatibility with various polyols for a coating material and giving an excellent coating film. SOLUTION: The method for producing the polyisocyanate comprises reacting (A) a TDI, (B) a PPG polyol having an Mn=2...

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Bibliographic Details
Main Authors KATAOKA YOSHIZUMI, SASAHARA TOSHIAKI, IKEMOTO MITSUNARI
Format Patent
LanguageEnglish
Published 05.08.2003
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To provide a method for producing a polyisocyanate having improved compatibility with various polyols for a coating material and giving an excellent coating film. SOLUTION: The method for producing the polyisocyanate comprises reacting (A) a TDI, (B) a PPG polyol having an Mn=200-2,000, and (C) a 6-20C monool to obtain an isocyanate group-containing urethane prepolymer and subjecting the isocyanate group-containing urethane prepolymer to an isocyanurating reaction. COPYRIGHT: (C)2003,JPO
Bibliography:Application Number: JP20020022951