Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-06-22
1989-08-22
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525456, 528 76, 528 77, 528 81, 528 83, 528230, 4273855, 4273881, 4274071, 427409, C08L 7504
Patent
active
048597430
ABSTRACT:
A high solids coating composition having a total solids content of at least 40 percent contains as a film former a urethane vehicle having a hydroxyl value of at least about 50 and a number average molecular weight of no more than 4,000 which is prepared from reactants containing a hydroxyl functional polyether or polyester or mixtures thereof of a molecular weight less than 1,000 and average functionality not exceeding 3 and at least 10 weight percent based on the total weight of hydroxyl functional polyether or polyester or mixtures thereof and polyisocyanate of a polyisocyanate having isocyanate groups separated by one or more hydrophobic moieties, each moiety containing at least 12 consecutive carbon atoms in a continuous chain; and an aminoplast crosslinking agent.
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Ambrose Ronald R.
Johnston Byron K.
O'Dwyer James B.
Porter, Jr. Samuel
Tyger Wayne H.
Pingitore Linda
PPG Industries Inc.
Welsh Maurice J.
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