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
1988-05-11
1989-07-11
Kight, John
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...
524366, 523414, 523416, 521 48, 521 485, 528272, 528300, 525444, 525441, C08J 510, C08J 506, C08G 6302
Patent
active
048473146
ABSTRACT:
A process of producing a room temperature-stable solvent solution from a high molecular weight crystalline ethylene glycol terephthalate solid polyester is disclosed in which the polyester is incorporated into a hot melt of an hydroxy-functional linear polyester having an hydroxy number of at least about 20, an acid number of less than about 30 and a molecular weight in the range of 1,000 to 10,000. This forms a molten mixture containing from about 20% to about 55% of terephthalate polyester which is maintained as a hot melt until a sample of the melt forms a clear to slightly cloudy solution in a 50% mixture thereof with 2-ethoxy diethanol glycol acetate. The reacted hot melt is then mixed with an organic solvent to form a solution which is useful in thermosetting solvent solution coating compositions.
Aqueous coating compositions may be made using water having dispersed therein a salt of an epoxy phosphate with a volatile base and having stably dispersed therein the aforesaid reacted hot melt after the same is mixed with a water-miscible organic solvent to form a solution which is dispersed in the aqueous medium and cured with a curing agent reactive with hydroxyl functionality.
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Gong Helene
Tortorello Anthony J.
Daley Dennis R.
DeSoto, Inc.
Kight John
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