POLYURETHANE-UREA COMPOSITION

PROBLEM TO BE SOLVED: To increase the resistance to light and prevent the embritllement caused by light by formulating a specific benzotriazole with a polyurethaneurea composition containing a hindered phenol and a tertiary nitrogen-containing polyurethane. SOLUTION: A benzotriazole which is liquid...

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Bibliographic Details
Main Author MORIFUJI YOSHINORI
Format Patent
LanguageEnglish
Published 03.03.1998
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To increase the resistance to light and prevent the embritllement caused by light by formulating a specific benzotriazole with a polyurethaneurea composition containing a hindered phenol and a tertiary nitrogen-containing polyurethane. SOLUTION: A benzotriazole which is liquid at room temperature, preferably a reaction product of 2-(2H-benzotriazol-2-yl)-6-(dodecyl)-4-methylphenol, methyl 3-(3-(2H-benzotriazol-2-yl)-5-t-butyl-4-hydroxyphenyl)propionate with polyethylene glycol is formulated to a polyurethaneurea containing a hindered phenol and a tertiary nitrogen-containing polyurethane in an amount of 0.3-3.0wt.%, preferably 0.5-1.5wt.%, more preferably 0.8-1.5wt.%. There never happens bleedout from the polyurethaneurea.
Bibliography:Application Number: JP19960222144