Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1981-06-23
1982-07-06
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
528 49, 524356, 524366, 524462, 524465, 524474, 524590, C08G 1830
Patent
active
043382401
ABSTRACT:
A curable urethane material which shows no change in volume on polymerization and curing is prepared from polyisocyanate compound, polyhydroxy compound and a new compound 1-alkyl-4-hydroxymethyl-2,6,7-trioxabicyclo[2,2,2]octane.
REFERENCES:
patent: 4098772 (1978-07-01), Bonk et al.
Mizutani Kiyokazu
Ogasawara Takahisa
Toagoesi Chemical Industry Co., Ltd.
Welsh Maurice J.
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