摘要:
Disclosed is a liquid coating composition, useful for making a chip resistant coating, comprising a binder of: a first and a second urethane resin each containing terminal, reactive ethylenically unsaturated groups. Each urethane resin is prepared by reacting components comprising (A) an isocyanate-terminated prepolymer which is the product of reacting an organic polyisocyanate with an organic polyol with (B) an isocyanate reactive group-containing unsaturated monomer selected from hydroxyalkyl acrylates, hydroxyalkyl methacrylates and hydroxyalkyl acrylamides. The organic polyol for the first urethane resin has a hydroxyl functionality of 3 or more; the organic polyol for the second urethane resin has a hydroxyl functionality of less than three; and the average functionality of the polyols utilized for the first and second urethane resins is less than three.Also disclosed is a method of making a cured chip resistant, coating.
摘要:
Disclosed is a liquid coating composition, useful for making a chip resistant coating, comprising a binder of: a first and a second urethane resin each containing terminal, reactive ethylenically unsaturated groups. Each urethane resin is prepared by reacting components comprising (A) an isocyanate-terminated prepolymer which is the product of reacting an organic polyisocyanate with an organic polyol with (B) an isocyanate reactive group-containing unsaturated monomer selected from hydroxyalkyl acrylates, hydroxyalkyl methacrylates and hydroxyalkyl acrylamides. The organic polyol for the first urethane resin has a hydroxyl functionality of 3 or more; the organic polyol for the second urethane resin has a hydroxyl functionality of less than three; and the average functionality of the polyols utilized for the first and second urethane resins is less than three.Also disclosed is a method of making a cured chip resistant, coating.
摘要:
A liquid, hydroxyl functional graft copolymer is prepared by the vinyl addition polymerization, in an inert organic medium, of a vinyl monomer component comprising at least a portion of a carboxyl functional vinyl monomer in the presence of a glycidyl ester containing acrylic polymer, the grafting occuring by the condensation reaction between the carboxyl groups of the vinyl monomer component and the epoxy groups of the glycidyl ester containing acrylic polymer. The graft copolymer is especially useful in formulating clear coating compositions which exhibit excellent sag resistance without the necessity for externally added rheology control agent.
摘要:
A color-plus-clear coating system is disclosed. A pigmented or colored base coat is first applied to a substrate followed by the application of a transparent top coat to the base coat. The transparent top coat composition is a liquid crosslinkable composition comprising a polyepoxide and a polyacid curing agent. The polyepoxide-polyacid curing agent in the transparent top coat provides a composite coating with outstanding gloss and distinctness of image making the composite coating particularly useful as an automotive top coat.
摘要:
Disclosed is a method for coating a substrate comprising the steps of (a) forming a basecoat by coating the substrate with a pigmented basecoating composition; and (b) thereafter forming a topcoat by coating the basecoat with a clear topcoating composition; wherein at least one of the basecoating composition and topcoating composition contains an addition interpolymer having alkoxysilane and/or acyloxysilane moieties.
摘要:
Ungelled polyester oligomers which are formed from reacting polyols, 1,2-dicarboxylic acid anhydrides and polyepoxides are disclosed. The polyesters are useful as resinous binders in high solids coating compositions. The coating compositions can be applied by spraying and do not result in a tacky overspray common with many high solids coating compositions.
摘要:
Non-gelled acrylic-hydrazide resins are prepared by reacting hydrazine with a non-gelled acrylic polymer containing a functional group reactive with hydrazine to cause hydrazide formation.
摘要:
Block copolymers are prepared by reacting a polyester resin or polyol with a hydroxyl or carboxyl functional mercaptan and subsequently reacting the blocked polyester or polyol in the presence of oxygen, with selected vinyl monomers such as diacetone acrylamide, acrylic acid, 2-hydroxyethyl acrylate and the like. Such block copolymers provide for coating compositions having physical properties which render them useful as protective and/or decorative films.
摘要:
Disclosed is a compound having the formula: ##STR1## wherein m is two or three;n is an integer from one to four;R is selected from the group consisting of:alkyl having one to six carbon atoms,hydrogen,HOCH.sub.2 --andR"O(CH.sub.2).sub.a --, wherein a is an integer from one to six andR" is alkyl having 1 to 6 carbon atoms;each R' in each CR'.sub.2 unit of the (CR'.sub.2).sub.m group and of the (CR'.sub.2).sub.n group is independently selected from the group consisting of --H and alkyl having one to four carbon atoms;X is selected from the group consisting of --O-- and ##STR2## and Y is a free radical polymerizable unsaturated moiety.Also disclosed are a process for preparing the compound, latexes containing the compound and coating compositions containing the compound.
摘要:
Ungelled hydroxyl-containing oligomers and their method of preparation are disclosed. The oligomers can be prepared by reacting an organic isocyanate with a half-ester formed from reacting a polyol with a 1,2-dicarboxylic acid anhydride followed by reaction with an epoxide. The oligomers are useful as resinous binders in high solids coating compositions. The coating compositions can be applied by spraying and do not result in a tacky overspray common with many high solids coating compositions.