Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1977-05-11
1981-01-06
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 59, 4284231, C08G 1838
Patent
active
042437920
ABSTRACT:
In a preferred embodiment, an improved moisture curing urethane resin that is durable in the presence of moisture and sunlight is formed by reacting an excess of a suitable aliphatic isocyanate with a suitable mixture of organic triols and diols and a hindered piperidine type stabilizer, e.g., bis(2,2,6,6 tetramethyl piperidinyl-4) sebacate in the presence of an organotin urethane forming catalyst such as dibutyltin dilaurate. This resin mixture product may be formulated with pigments, solvents and the like to form a topcoat paint that, upon application to a substrate, is curable under conditions of high relative humidity but relatively low temperatures (e.g., about 90.degree. C.). The cured paint has excellent gloss stability due to the chemical incorporation of the stabilizer segments throughout the binder resin molecules.
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General Motors Corporation
Grove George A.
Welsh Maurice J.
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