摘要:
This invention relates to a protected organotin-based catalyst system for polyurethane synthesis that is useful in coatings applications. The catalyst has a formula according to; R1aR2bR3cSn[CH(OX)R4]d, wherein R1, R2, and R3 are the same or different and represent an optionally substituted hydrocarbyl, aromatic, alkoxide, amide, halide or stannyl group, R4 represents an optionally substituted hydrocarbyl or optionally substituted aryl group. a, b, and c are independently 0, 1, 2, or 3; d is 1, 2 or 3; and a+b+c+d=4; and X is an acid-labile or moisture-labile protecting group. When a coating mixture comprising the catalyst is sprayed and/or applied to a substrate as a thin film in air, the catalyst is activated. For solvent-based refinish systems comprising hydroxyl and isocyanate species at high solids levels, the catalyst system therefore provides extended viscosity stability, i.e., pot life.
摘要翻译:本发明涉及用于聚氨酯合成的受保护的有机锡基催化剂体系,其可用于涂料应用。 催化剂具有下式: R1aR2bR3cSn [CH(OX)R4] d,其中R1,R2和R3相同或不同,表示任选取代的烃基,芳族,醇盐,酰胺,卤化物或甲锡烷基,R4表示任选取代的烃基或任选取代的芳基 组。 a,b和c独立地为0,1,2或3; d为1,2或3; 和a + b + c + d = 4; X是酸不稳定或潮湿不稳定的保护基。 当包含催化剂的涂料混合物在空气中作为薄膜喷涂和/或施加到基材上时,催化剂被活化。 对于含有高固体含量的羟基和异氰酸酯物质的基于溶剂的修补体系,催化剂体系因此提供了延长的粘度稳定性,即适用期。
摘要:
This invention relates to a protected organotin-based catalyst system for polyurethane synthesis that is useful in coatings applications. The catalyst has low activity in the absence of oxygen. When a coating mixture comprising the catalyst is sprayed and/or applied to a substrate as a thin film in air, the catalyst is activated. For solvent-based refinish systems comprising hydroxyl and isocyanate species at high solids levels, the catalyst system therefore provides extended viscosity stability, i.e., pot life.
摘要:
This invention relates to a protected organotin-based catalyst system for polyurethane synthesis that is useful in coatings applications. The catalyst has low activity in the absence of oxygen. When a coating mixture comprising the catalyst is sprayed and/or applied to a substrate as a thin film in air, the catalyst is activated. For solvent-based refinish systems comprising hydroxyl and isocyanate species at high solids levels, the catalyst system therefore provides extended viscosity stability, i.e., pot life.
摘要:
This invention relates to coating compositions and more particularly to highly productive coating compositions that quickly harden for sanding or buffing by incorporating therein a polyisocyanate adduct mixture into the coating composition as the crosslinking material. Such coatings are particularly useful for refinishing automobiles and trucks.
摘要:
The present invention is directed to a UV curable coating composition, which includes one or more monomers, one or more multifunctional oligomers, one or more pigments, one or more photoinitiators, and volatile organic solvent. The coating composition can be used as a primer in repairing and refinishing automobiles. The coating composition provides short drying times and a cured coating that does not need to be wiped. A method of applying the coating composition is also provided.
摘要:
The present invention relates to a substrate coated with a coating composition wherein the coating composition comprises a crosslinkable component and the crosslinkable component is a mixture of two different and optionally three different acrylic polymers. Each acrylic polymer has functional groups present that are reactive with a crosslinking component. The functional groups present on each polymer have different rates of reactivity with the crosslinking component.
摘要:
A coating composition comprising a film forming binder of a. at least one polymer that has pendant groups, such as, hydroxyl, carboxyl, glycidyl, amine, amide, silane and mixtures thereof that are reactive with a crosslinking component and the polymer has a glass transition temperature (Tg) of 10 to 80° C.; b. a polytrimethylene ether diol having a Mn (number average molecular weight) of 500 to 5,000; and c. a crosslinking component, such as, organic polyisocyanates, melamine formaldehydes, alkylated melamine formaldehydes, benzoquanamine formaldehyde, urea formaldehyde, polyepoxides, silane resin and any mixtures thereof; wherein the coating composition can be used as a clear coating composition and can contain pigments and may be used as a pigmented top coating, a pigmented base coating, a primer or primer surfacer coating and is useful for coating automobile and truck bodies and parts, industrial equipment, appliances and exterior structures.
摘要:
The present invention is directed to a multi component coating composition that includes a crosslinkable, crosslinking and catalyst components. The catalyst component includes organo zinc cocatalysts, organo tin catalysts, and carboxylic acids. The catalyst component provides long pot life to a pot mix obtained by mixing the aforementioned with components while simultaneously providing a coating resulting from the pot mix with desired coating properties, such as desired early hardness of a coating resulting from a relatively low temperature baking cure cycle.
摘要:
A process for coating a thermoplastic substrate which comprises applying a solvent based coating composition to the substrate and curing the coating composition at ambient temperature to 125° C. to form a uniform smooth film on the substrate; wherein the coating composition contains about 45-80% by weight of a film forming binder and 20-55% by weight of an organic liquid carrier; wherein the binder contains (A) 40-90% by weight, based on the weight of the binder, of a polymer selected from the following: acrylic polyol, polyester polyol, polyether polyol or a polyurethane polyol; and (B) 10-60% by weight, based on the weight of the binder, of an organic polyisocyanate crosslinking agent; and wherein the organic liquid carrier used in the coating composition comprises at least 50% by weight, based on the weight of the organic liquid carrier used in the coating composition, of tertiary butyl acetate; the process of this invention also can be used to apply lacquers, i.e., coating composition that do not contain a crosslinking agent such as a polyisocyanate.
摘要:
The present invention relates to a substrate coated with a coating composition wherein the coating composition comprises a crosslinkable component and the crosslinkable component is a mixture of two different and optionally three different acrylic polymers. Each acrylic polymer has functional groups present that are reactive with a crosslinking component. The functional groups present on each polymer have different rates of reactivity with the crosslinking component.