POLYURETHANE FOAM

PROBLEM TO BE SOLVED: To obtain a urethane foam excellent in preventing yellowish discoloration affected by ultraviolet ray and NOX, and having a uniform cell structure. SOLUTION: The polyurethane foam manufactured by reacting a polyol compound with a polyisocyanate compound by specifying the polyis...

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Bibliographic Details
Main Authors TAKAGI MASAMITSU, KAWAMORI SHOICHI
Format Patent
LanguageEnglish
Published 10.10.2001
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 obtain a urethane foam excellent in preventing yellowish discoloration affected by ultraviolet ray and NOX, and having a uniform cell structure. SOLUTION: The polyurethane foam manufactured by reacting a polyol compound with a polyisocyanate compound by specifying the polyisocyanate compound to a aliphatic and/or alicylic polyisocyanate compound modified by the mixture 50-80 wt.% of polyol and/or polythiol having tree active hydrogen atoms at the terminals with average mol.wt. of <=1,000 (A) and 50-20 wt.% of polyol and/or polythiol having two active hydrogen atoms at the terminals with average mol.wt. of <=1,000 (B), and containing 15% or mire NCO, and is, also, characterized by use of a catalyst to trimerize a isocyanate.
Bibliography:Application Number: JP20000093452