Abstract:
Multilayer coatings having at least one base coating containing pigments and at least one transparent top coating are applied from coating compositions on the substrates and cured together. The coating composition contains: (a) a film-forming synthetic resin; (b) an organic solvent in which the synthetic resin is soluble; and (c) polymer microparticles having polar and/or ionic groups on their surfaces and a diameter of about 0.01 to 5 microns obtained by emulsion polymerisation of ethylenically unsaturated monomers, these monomers having a portion comprising 2 or more double bonds per molecule and the microparticles are insoluble in the solution of (a) and (b). The base coat(s) have (d) pigments and the top coats are free of pigments.
Abstract:
A process for the production of a multilayer protective and/or decorative coating upon a surface of a substrate, comprises the steps of: applying to the surface a base-coat composition comprising a film forming polymer (A), a volatile organic liquid diluent (B) in which the polymer is dissolved, polymer microparticles (C) which are insoluble in the solution of polymer (A) in the liquid diluent (B) and which are stably disposed by steric stabilisation therein in a non-flocculated state in an amount of from 3% to 8% of the aggregate weight of the polymer (A) and the microparticles (C), and pigment particles (D) also dispersed in the solution of the polymer (A) in the liquid diluent (B); forming a base-coat film upon the surface from the base-coat composition; applying to the base-coat film so obtained a transparent top-coat composition comprising a film-forming polymer (E) and a volatile carrier liquid for the polymer to form a polymer film upon the base-coat film.
Abstract:
A process for the production of a multilayer protective and/or decorative coating upon the surface of a substrate (1) A basecoat composition is applied comprising: (A) a film-forming polymer; (B) a volatile organic liquid diluent in which the polymer is dissolved; (C) polymer microparticles which are insoluble in the solution of the polymer (A) in the liquid diluent (B) and are stably dispersed by steric stabilization therein in a non-flocculated state in an amount of from 3% to 8% of the aggregate weight of the film-forming polymer A and the microparticles; (D) pigment particles also dispersed in the solution of the film-forming polymer in the liquid diluent. (2) A polymer film is formed upon the surface from the composition applied in (1). (3) A transparent topcoat is applied to the basecoat film from a composition comprising: (E) a film-forming polymer; and (F) a volatile carrier liquid for the polymer. (4) A second polymer film is formed upon the basecoat film from the composition applied in (1).
Abstract:
Flexible coatings are applied to the outer surfaces of automotive vehicles having metal and plastic portions from coating compositions having about 40 to 95% by weight of an epsilon-caprolactone modified acrylic polymer and about 5 to 45% by weight of an aminoplast resin cross-linking agent, the epsilon-caprolactone modified acrylic polymer having a number average molecular weight of about 1,000 to 6,000, hydroxyl contents from about 1 to 7% by weight, optionally about 0.1 to 4.0% by weight carboxyl contents and about 0.25 to 6 moles epsilon-caprolactone per mole of hydroxyl and/or carboxyl in the polymer, the coating composition having a solids content of about 35 to 68% by weight and a liquid carrier of about 32 to 65% by weight.
Abstract:
A process for the production of a multilayer protective and/or decorative coating upon the surface of a substrate (1) A basecoat composition is applied comprising: (A) a film-forming polymer; (B) a volatile organic liquid diluent in which the polymer is dissolved; (C) polymer microparticles which are insoluble in the solution of the polymer (A) in the liquid diluent (B) and are stably dispersed by steric stabilization therein in a non-flocculated state in an amount of from 3% to 8% of the aggregate weight of the film-forming polymer A and the microparticles; (D) pigment particles also dispersed in the solution of the film-forming polymer in the liquid diluent. (2) A polymer film is formed upon the surface from the composition applied in (1). (3) A transparent topcoat is applied to the basecoat film from a composition comprising: (E) a film-forming polymer; and (F) a volatile carrier liquid for the polymer. (4) A second polymer film is formed upon the basecoat film from the composition applied in (1).