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
1981-07-02
1983-05-17
Marquis, Melvyn I.
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...
524267, 524476, 524484, 524588, 524609, 525437, 525442, 525443, 525446, 525441, 525519, 525535, C08G 6300, C08L 8104, C08L 8304, C08K 334
Patent
active
043840701
ABSTRACT:
Pigmented coating solutions are disclosed which deposit coatings possessing improved resistance to ultraviolet radiation-induced auto-oxidation. These solutions contain organic solvent, including aromatic hydrocarbon solvent, having dissolved therein an aromatic hydrocarbon-soluble, normally liquid, polysulfide or polydisulfide derivative having terminal -SH groups which have been reacted with a monofunctional reactant providing a C.sub.1 -C.sub.22 alkyl terminal group to provide an essentially nonreactive derivative. The solvent also has dissolved therein a polar polymeric binder (preferably thermosetting) which degrades by a photo-oxidative mechanism and which has only limited compatibility with the derivative. The pigment protects the bulk of a deposited coating, and the limited compatibility causes a heated film of the coating solution to stratify as the solvent evaporates to concentrate the derivative at the surface of the cured coating to protect the same.
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Gaske Joseph E.
Pennanen Hannu K.
Plaisance Thomas H.
DeSoto, Inc.
Lilling Herbert J.
Marquis Melvyn I.
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