摘要:
Disclosed is a coating composition which crosslinks upon exposure to ultraviolet radiation. The coating composition comprises: (A) from 1 to 5 percent of a saturated, chlorinated polymeric material selected from the group consisting of (1) a chlorinated polyolefin containing about 5 to 75 percent by weight of chlorine and having a number average molecular weight of about 5,000-50,000, (2) a chlorinated polyolefin containing carboxylic anhydride groups and about 5 to 25 percent by weight of chlorine and having a number average molecular weight of about 5,000-50,000, and (3) a mixture thereof; (B) from 20 to 80 percent of a radiation sensitive monomer having at least two addition polymerizable unsaturated bonds; (C) from 0.1 to 5.0 percent of a photopolymerization initiator; and (D) from 80 to 20 percent of an acrylic addition polymer having at least one amino group and having a number average molecular weight of about 8,000-70,000.Also disclosed is a method of coating comprising: (I) applying to a plastic substrate a film of coating composition of the invention; and (II) curing the film by exposing the film to ultraviolet radiation.Also disclosed is a plastic article having directly adhered to a surface thereof, a crosslinked film produced by the method of the invention.
摘要:
Disclosed is a coating composition which crosslinks upon exposure to ultraviolet radiation. The coating composition comprises: (A) from 1 to 5 percent of a saturated, chlorinated polymeric material selected from the group consisting of (1) a chlorinated polyolefin containing about 5 to 75 percent by weight of chlorine and having a number average molecular weight of about 5,000-50,000, (2) a chlorinated polyolefin containing carboxylic anhydride groups and about 5 to 25 percent by weight of chlorine and having a number average molecular weight of about 5,000-50,000, and (3) a mixture thereof; (B) from 20 to 80 percent of a radiation sensitive monomer having at least two addition polymerizable unsaturated bonds; (C) from 0.1 to 5.0 percent of a photopolymerization initiator; and (D) from 80 to 20 percent of an acrylic addition polymer having at least one amino group and having a number average molecular weight of about 8,000-70,000.Also disclosed is a method of coating comprising: (I) applying to a plastic substrate a film of coating composition of the invention; and (II) curing the film by exposing the film to ultraviolet radiation.Also disclosed is a plastic article having directly adhered to a surface thereof, a crosslinked film produced by the method of the invention.
摘要:
A method of forming a multilayer coating on a substrate utilizes a pigmented aqueous based coating composition. The aqueous based coating composition contains a polymeric film-forming resin and as an additive from about 1 to about 40 percent by weight based on the resin solids of the composition of an oligomeric ester having an acid value of from about 100 to about 500 of the structure: ##STR1## where X is the residue of a polyol containing from 1 to 50 carbon atoms per hydroxyl group after reaction with an acid or an anhydride, R is an organic moiety from the acid or anhydride and A has an average value of about 2 or greater. The coating compositions are particularly advantageous as metallic pigmented coating compositions for automotive basecoat applications because they exhibit excellent resistance to mottling, have good flop and have reduced sensitivity to fluctuations in relative humidity.
摘要:
An aqueous based coating composition contains a polymeric film-forming resin and as an additive from about 1 to about 40 percent by weight based on the resin solids of the composition of an oligomeric ester having an acid value of from about 100 to about 500 of the structure: ##STR1## where X is the residue of a polyol containing from 1 to 50 carbon atoms per hydroxyl group after reaction with an acid or an anhydride, R is an organic moiety from the acid or anhydride and A has an average value of about 2 or greater.The coating compositions are particularly advantageous as metallic pigmented coating compositions for automotive basecoat applications because they exhibit excellent resistance to mottling, have good flop and have reduced sensitivity to fluctuations in relative humidity.
摘要:
Compositions are provided which contain (a) one or more polysiloxanes comprising at least one reactive functional group; a plurality of particles; and optionally, one or more curing agents comprising at least one functional group that is reactive with any reactive functional group of polysiloxane (a). Additionally, a process for applying the multi-component composite coatings described above to a substrate and coated substrates are provided. A process for preparing the coating compositions also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.
摘要:
A composition having sealing and sound dampening properties is disclosed which comprises one or more polyepoxides comprising at least two epoxide groups per molecule; a thermoplastic polyester polymer; a curing agent adapted to react with the polyepoxides; inorganic particles having an oil absorption value of less than 70; and inorganic microparticles different from the previously mentioned inorganic particles, the inorganic microparticles having an average particle size prior to incorporation into the composition ranging from 0.5 to 200 microns. Multilayer composites, coated substrates, and methods for forming sound dampening coatings on a metallic substrate are also provided.
摘要:
The present invention provides methods for forming composite coatings on substrates including the steps of: (A) applying an aqueous primary coating composition to at least a portion of a surface of a substrate, the primary coating composition including: (1) at least one thermosettable dispersion including polymeric microparticles having functionality adapted to react with a crosslinking material, the microparticles including: (a) at least one acid functional reaction product of ethylenically unsaturated monomers; and (b) at least one hydrophobic polymer having a number average molecular weight of at least about 500; and (2) at least one crosslinking material, to form a substantially uncured primary coating thereon; (B) applying a secondary coating composition to at least a portion of the primary coating formed in step (A) without substantially curing the primary coating to form a substantially uncured secondary coating thereon; and (C) applying a clear coating composition to at least a portion of the secondary coating formed in step (B) without substantially curing the secondary coating to form a substantially uncured composite coating thereon.
摘要:
A paint composite article comprising a thermally deformable carrier film having an adhesive layer on one surface and a paint layer on its other surface. The paint layer includes a pigmented basecoat derived from a film-forming binder and a transparent topcoat layer overlaying the basecoat layer. The basecoat includes an aminoplast to improve its adhesion to the carrier film. An additional adhesion promoting tiecoat layer may also be interposed between the carrier film and the paint layer.
摘要:
Quaternary ammonium hydroxide-containing polymers and their use in coating applications are disclosed. The quaternary ammonium hydroxide-containing polymers are prepared from reacting a polyglycidyl ether of a cyclic polyol with a tertiary amine in the presence of a sufficient amount of water for the formation of quaternary hydroxide groups.The quaternary ammonium hydroxide-containing polymers are particularly good as electrocoating resins in that they electrodeposit without generating acid counterion. They are also good in other conventional coating applications such as dip, flow, spray and roll coating in that the resulting coating can be baked without the generation of corrosive acid.
摘要:
Resinous compositions useful as coating compositions comprise blends of hydroxyfunctional polymers; organoalkoxy silane crosslinking agents represented by the formula: R.sub.n Si(OR').sub.4-n wherein R is an aryl, alkaryl, aralkyl, alkyl having 1 to 8 carbon atoms, XR .sub.4 -- or ##STR1## RADICAL, WHEREIN R.sub.1 is hydrogen or an alkyl radical of 1 to 6 carbon atoms, R.sub.2 is a member selected from the group consisting of alkylene radicals of 1 to 7 carbon atoms and carbonyloxy radicals represented by the formula: ##STR2## wherein R.sub.3 is an alkylene radical of 1 to 6 carbon atoms, wherein R.sub.4 is an alkylene radical of 1 to 6 carbon atoms, a cycloalkylene radical, or an arylene radical and X is a functional group selected from the group consisting of --OH, --SH, ##STR3## halogen, NH.sub.2 --, ##STR4## and NH.sub.2 --CH.sub.2 --CH.sub.2 --NH--, and wherein R' is methyl, ethyl, 2-methoxyethoxy, 2-ethoxyethoxy, m is 0 or 1 and n is 0, 1 or 2; and cure accelerating catalysts. Hydroxyfunctional polymers such as hydroxyfunctional acrylic polymers, polyesters and polyurethanes are particularly useful. Organic acids, metallic salts of organic acids and organic bases are useful cure accelerating catalysts.