Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-03-09
1990-08-28
Short, Patricia
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525408, 525424, 525440, 525454, 525457, 528 45, C08G 1880
Patent
active
049526324
ABSTRACT:
The invention relates to trans-cyclohexane-1,4-diisocyanate which is completely or partially blocked with epsilon-caprolactam and a method of manufacturing the same wherein 1 mole trans-cyclohexane-1,4-diisocyanate is reacted with 1 to 2 moles epsilon-coprolactam, without or with the presence of solvents. These blocked diisocyanates are used for polyurethane powders.
REFERENCES:
patent: 2698845 (1955-01-01), Mastin
patent: 3822240 (1974-07-01), Schmitt
patent: 4203916 (1980-05-01), Zengel
patent: 4313876 (1982-02-01), Gras
Gras Rainer
Wolf Elmar
Huels Aktiengesellschaft
Short Patricia
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