Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-10-23
1994-11-22
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525440, 525454, 525457, 525460, 528 60, 528 66, 528 67, C08F28304
Patent
active
053670361
ABSTRACT:
A moisture-curable urethane-based sealing composition is made up of an urethane prepolymer and a polyurethane compound blended together in specified amounts. The urethane prepolymer is derivable by reacting a selected class of polyether polyols with a selected class of polyisocyanate compounds. The polyurethane compound is available by reacting a selected class of polyether or polyester polyols with a selected class of polyisocyanate compounds, followed by reaction of the resulting prepolymer with a selected class of monoalcohols to thereby binder all isocyanate groups in the prepolymer. The ultimate sealant is adequate in initial adhesion strength, low in glass transition temperature and resistant to moist heat.
REFERENCES:
patent: 4824888 (1989-04-01), Emmerling et al.
patent: 5061555 (1991-10-01), Edenbaum et al.
patent: 5173538 (1992-12-01), Gilch et al.
patent: 5180632 (1993-01-01), Edenbaum et al.
Danjo Masamichi
Kitamura Tetsuji
Matsuda Hideyuki
Nishi Eiji
Saito Hitoshi
Critharis Mary
Seidleck James J.
The Yokohama Rubber Co. Ltd.
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