Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-07-01
1994-11-29
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525208, 525221, 525227, 525519, 525194, 4274071, C08L 3302, C08L 3306
Patent
active
053691784
ABSTRACT:
A resin composition for thermosetting coating, which comprises
(a.sub.1) an acrylic copolymer having a particular acid value and/or (a.sub.2) an acrylic copolymer having a particular acid value and a particular hydroxyl value,
(b) an acrylic copolymer having a particular epoxy equivalent,
(c) a monobasic acid having a dissociation constant (pKa) of 3 or less, and, as necessary,
(d) an amino resin and
(e) a quaternary phosphoium salt,
and wherein the equivalent ratio of the acid groups of (a.sub.1) and/or (a.sub.2) and the epoxy groups of (b) is 1:0.5 to 0.5:1 and the amounts of (c), (d) and (e) are 0.01-5 parts by weight, 1-25 parts by weight and 0.01-3 parts by weight, respectively, per 100 parts by weight of the total of (a.sub.1) and/or (a.sub.2) and (b).
The resin composition, when used as a clear coating for automobiles, is superior in film appearance, acid resistance, solvent resistance water resistance, weatherability, storage stability and low temperature curing.
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Chemical Abstracts, vol. 117, No. 4, Jul. 26, 1992.
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Chemical Abstracts, vol. 113, No. 4, Jul. 23, 1990.
Kano Taisaku
Miyazaki Eiichiro
Critharis Mary
Mitsui Toatsu Chemicals Inc.
Seidleck James J.
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