Compositions and processes producing scratch resistant polysilox

Details Compositions and processes producing scratch resistant polysilox Compositions and processes producing scratch resistant polysilox

1988-11-07

1989-07-11

Marquis, Melvyn I.

Coating processes

With post-treatment of coating or coating material

Heating or drying

524837, 524838, 10628711, 10628713, 10628714, 10628716, 528 30, 528 32, 528 38, 428412, 428451, 428447, 428480, B05D 302

Patent

active

048471208

ABSTRACT:
A prepolymer composition for forming a scratch-resistant coating, comprising an acidic, aqueous solution of a polysiloxane prepolymer having non-coreactive side groups and co-reactive side groups other than hydrolysable groups, the composition being curable by evaporation of solvent and a decrease in acidity causing the co-reactive groups to react together to cross-link the polymer. Suitable co-reactive side groups are amino, epoxy and thiol. Suitable non-coreactive side groups are alkyl and gamma methacryloxy propyl. Acidity is suitably achieved by using a volatilisable organic acid such as acetic acid, so that it evaporates with the solvents to decrease the acidity.

REFERENCES:
patent: 3961977 (1976-06-01), Koda et al.
patent: 4006271 (1977-02-01), French et al.
patent: 4394177 (1983-07-01), Fujioka et al.
patent: 4547397 (1985-10-01), Burzynski et al.
patent: 4673354 (1987-06-01), Culler

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