One-pack high solid coating composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525110, 525161, 260 15, C08L 6120, C08L 6300

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active

042911370

ABSTRACT:
A one-pack high solid coating composition consisting essentially of (I) 100 parts by weight of an acrylic resin which is a copolymer having a glass transition temperature of -21.degree. to -50.degree. C. and a hydroxyl number of 40 to 280 and being prepared from (a) one or more members selected from hydroxyalkyl acrylates and methacrylates of the general formula ##STR1## wherein R is a hydrogen atom or a methyl group and R.sub.1 is a divalent alkyl group having 2 to 5 carbon atoms, and (b) one or more members selected from alkyl acrylates and methacrylates of the general formula ##STR2## wherein R is as defined above and R.sub.2 is a monovalent alkyl group having 1 to 12 carbon atoms, and glycidyl acrylates and methacrylates of the general formula ##STR3## wherein R is as defined above and R.sub.3 is a divalent alkyl group having 1 to 5 carbon atoms, (II) 20 to 160 parts by weight of an amino-formaldehyde resin etherified with a monohydric alcohol having 1 to 4 carbon atoms, and (III) 0.5 to 6 parts by weight, per 100 parts by weight of the total of the acrylic resin as component (I) and the etherified amino-formaldehyde resin as component (II) combined, of a blocked acid catalyst, said amount of the blocked acid catalyst being expressed in the amount of its acid.

REFERENCES:
patent: 3541055 (1970-11-01), Malamet
patent: 3901840 (1975-08-01), Irvin
patent: 3953643 (1976-04-01), Cheung
patent: 4027066 (1977-05-01), Victorius
patent: 4055607 (1977-10-01), Sullivan
patent: 4137389 (1979-01-01), Wingler
patent: 4181783 (1980-01-01), Chattha
patent: 4181784 (1980-01-01), Chattha
patent: 4181785 (1980-01-01), Chattha
patent: 4184025 (1980-01-01), Chattha
Canadian Paint & Finishing, Apr. 1977, pp. 50-53.
Kogyo Zairyo 24, No. 6, 30-34 (Jun. 1976).

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