Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-03-01
1994-02-22
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525523, 525529, 525533, 528 93, C08F28300
Patent
active
052888207
ABSTRACT:
Disclosed are thermosetting or curable coating compositions comprising (1) a film forming polymeric material bearing acetoacetate residues, (2) an amino resin cross-linking or curing material, (3) an organic sulfonic acid cross-linking or curing catalyst, and (4) an epoxide compound selected from limonene monoepoxide, limonene diepoxide and a mixture thereof. The presence of the limonene epoxide inhibit discoloration of the coating composition upon prolonged storage, especially at elevated temperatures.
REFERENCES:
patent: 3892903 (1975-07-01), Dowbenko
patent: 4031290 (1977-06-01), Anderson et al.
patent: 4644036 (1987-02-01), Walz et al.
patent: 5051529 (1991-09-01), Witzeman et al.
patent: 5206077 (1993-04-01), Cowley et al.
J. S. Witzeman et al., "t-Butyl acetoacetate:A new reagent for the preparation of acetoacetylated materials", Chemspec USA 89 Symposium.
Rector, Jr. Franklin D.
Witzeman J. Stewart
Bleutge John C.
Eastman Kodak Company
Gulakowski Randy
Heath, Jr. William P.
Thomsen J. Frederick
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