摘要:
A technique of treating an automotive coating to modify surface-specific physical properties thereof while retaining bulk physical properties of the automotive coating includes the step of generating a plasma discharge in a plasma generating assembly. The automotive coating is treated with the plasma discharge. The automotive coating is completely cured prior to treatment with the plasma discharge. To treat the automotive coating, either 1) a precursor material is introduced into the plasma discharge to form a thin film on the automotive coating, or 2) the plasma discharge is free of a precursor material and weak bonds are destroyed on or near the surface of the automotive coating.
摘要:
A paint coating system comprises a substrate and a first paint layer disposed on the substrate. The first paint layer is formed from a first composition comprising either a first decomplexing agent or a first organoborane complex. The paint coating system further comprises a second paint layer disposed on the first paint layer. The second paint layer is formed from a second composition comprising the other of the first decomplexing agent and the first organoborane complex. At least one of the first and second compositions further comprises a radical polymerizable compound. A method of producing a multilayered paint coating includes the steps of providing the substrate, applying a first paint layer on the substrate, applying a second paint layer on the first paint layer, and curing the at least one of the first and second paint layers.
摘要:
A coating composition is used to form a clearcoat layer of a film system including a basecoat layer and the clearcoat layer. The coating composition includes a carbamate functional polymer, a cross-linking agent reactive with the carbamate functional polymer, and an acid functional polymer substantially non-reactive with the carbamate functional polymer and the cross-linking agent. The acid functional polymer has an acid value of at least 50 mg KOH/g and contributes to an increased resistance to acid etch of the clearcoat layer. The acid functional polymer also contributes to an increased intercoat adhesion of the basecoat layer and the clearcoat layer thereby decreasing a possibility of separation/delamination of the basecoat layer and the clearcoat layer.
摘要:
A compound in which n is 0, 1, 2, or 3; R1, R2, R7, and R8 are each independently alkyl group, including cycloalkyl, an alkylaryl group, or an aryl group, optionally with one or more heteroatoms, with the proviso that R1 and R2 can together form a cycloalkylene group and, independently, R7 and R8 can together form a cycloalkylene group; Y is an oxygen free radical, a sulfur free radical, OR9 or SR9; R3, R4, R5, R6, and R9 are each independently H or an alkyl group, a cycloalkyl group, an aryl group, or an alkylaryl group, optionally with one or more heteroatoms; and compositions, such as basecoat and clearcoat coating compositions, containing such compounds.
摘要翻译:n为0,1,2或3的化合物; R 1,R 2,R 7和R 8各自独立地为烷基,包括环烷基,烷基芳基或芳基,任选具有一个或多个杂原子,条件是R 1和R 2可以一起形成亚环烷基, R7和R8可以一起形成亚环烷基; Y是氧自由基,无硫自由基,OR9或SR9; R 3,R 4,R 5,R 6和R 9各自独立地为H或烷基,环烷基,芳基或烷基芳基,任选具有一个或多个杂原子; 以及含有这些化合物的组合物,如底漆和透明涂料涂料组合物。
摘要:
The present invention provides a test method for simulating outdoor exposure conditions for testing a coated substrate to evaluate environmental etching of paint caused by acid rain. The test method requires that the test substrate have an acid solution having a pH of less than 6.0 applied thereto by spray or in atomized droplets. The substrate is held in a substantially horizontal position of less than 15° to the horizontal and exposed to heat of above a black panel temperature of 30° C. and light during testing. The light source must emit light in the spectral distribution of at least visible and ultraviolet light, including the spectral distribution of sunlight. Following exposure to testing the substrate is evaluated for environmental etch.
摘要:
A high solids, non-aqueous dispersion, clearcoat composition is disclosed, comprising a functional polymer selected from the group consisting of a) carbamate-functional polymers and b) hydroxyl-functional polymers; c) a curing agent selected from the group consisting of aminoplast resins and blocked polyisocyanates; and d) a weak non-polar solvent, wherein the coating is high solids, substantially clear and transparent, and further comprises a dispersed phase and a continuous phase.
摘要:
The invention provides carbamate-functional resins and coating compositions incorporating said resins that have improved adhesion with respect to subsequently applied films or coatings. More particularly, the invention relates to carbamate-functional addition polymers having at least 250 grams of polymer per carbamate group which are made with less than 35 percent by weight of nonfunctional monomers, preferably with less than 20 percent by weight and most preferably from 0 to less than 10 percent by weight, based on the total weight of the polymer. The invention further provides a method of making a carbamate-functional polymer and carbamate-functional polymers made by the claimed method. Finally, the invention provides a method for improving the adhesion of a first coating composition to a subsequently applied material as well as a method of making a composite comprising a coated substrate, an adhesive composition, and a glass having at least one surface.
摘要:
A coating composition including a copolymerization product of a mixture of monomers including one or more carbamate-functional monomers and (meth)acrylic monomers, some having carboxylic acid-functionality. The monomer mixture is essentially free of hydroxyl monomers. The coating composition may be a solvent-borne clearcoat coating composition, preferably an automotive clearcoat coating composition, that may be applied over a water-borne basecoat coating composition.
摘要:
Disclosed is a method for making nongelled functional addition polymers from linear unsaturated anhydrides. The method subjects a linear unsaturated anhydride compound, an active hydrogen compound, and an epoxide compound to reaction conditions such that each of the following three reactions occur: (i) polymerization of polymerizable C═C bonds, (ii) ring opening of an anhydride functional group of the linear unsaturated anhydride compound by the active hydrogen compound to create an acid functional group, and (iii) reaction of the acid functional group resulting from the anhydride ring opening with the epoxide compound. At the time of reaction (iii), the acid functional group resulting from the anhydride ring opening may be selected from an ethylenically unsaturated monomer, a polymer, or both. In one embodiment, the method does not include the physical removal of any acid functional monomers or polymerization products. Also disclosed are a curable coating composition and a coated substrate.
摘要:
The invention provides carbamate-functional resins and coating compositions incorporating said resins that have improved adhesion with respect to subsequently applied films or coatings. More particularly, the invention relates to carbamate-functional addition polymers having at least 250 grams of polymer per carbamate group which are made with less than 35 percent by weight of nonfunctional monomers, preferably with less than 20 percent by weight and most preferably from 0 to less than 10 percent by weight, based on the total weight of the polymer. The invention further provides a method of making a carbamate-functional polymer and carbamate-functional polymers made by the claimed method. Finally, the invention provides a method for improving the adhesion of a first coating composition to a subsequently applied material as well as a method of making a composite comprising a coated substrate, an adhesive composition, and a glass having at least one surface.