Aliphatic silylated polyurethane mixtures having reduced viscosites

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United States of America Patent

PATENT NO 5539045
SERIAL NO

08550122

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A silylated polyurethane made by the reaction of an isocyanate-terminated polyurethane a mixture of a first and a second alkoxysilane, each of which has the general formula: (CH.sub.3).sub.m (CH.sub.3 O).sub.3-m Si(CH.sub.2).sub.3 XH wherein X is NR, S, oxygen, or a ureido radical, and R is hydrogen, alkyl, aryl, aminoalkyl or trimethoxysilylpropyl, has a lower viscosity than the average of the viscosities of two polyurethanes made from the same isocyanate-terminated polyurethane and either the first alkoxysilane or the second alkoxysilane. Likewise, a blend of those two silylated polyurethanes has a lower viscosity than the viscosity anticipated by the linear viscosity relationship typically observed for blends. Said linear relationship is based on a calculation of the weighted average viscosity of the blend from the viscosity of each component and the proportion of each.

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Patent Owner(s)

Patent OwnerAddress
TORAY FINE CHEMICALS CO LTD3-1 KANDA-SUDACHO 2-CHOME CHIYODA-KU TOKYO 1010041 ?1010041

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chokshi, Kanu R Crystal Lake, IL 2 46
Potts, Keith B Elgin, IL 7 90

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