摘要:
The present invention is directed to coatings that provide improved retort and tropical decay resistance for use on metal food containers. The coatings generally comprise a carbamated polyol formed by the reaction between a polyol, an alkylene oxide and an alkyl carbamate. A crosslinker reactive with the carbamate functionality is used to react with the carbamate moiety. Methods for improving retort resistance and resistance to tropical decay are also disclosed, as are substrates coated with the present compositions.
摘要:
A coating composition for improving physical characteristics of cured container coatings subjected to steam processing are described herein. The coating composition comprises a first component which is a carbamate functional compound and a second component which is a compound having a plurality of functional groups that are reactive with said carbamate group(s) on the carbamate functional compound. The coating composition is baked to form a cured film on the container. The cured film is resistant to steam processing.
摘要:
A method for preparing a polyurethane wherein the components thereof have a long shelf life. The formulation is made by separately preparing a prepolymer solution, a crosslinking solution, and a cement solution. Upon utilization, the solutions are mixed together and applied. The urethane has very good fuel resistance and can be used as a coating in fuel tanks as well as to form integral fuel tanks.
摘要:
A polyester polyurethane compound is formed by reacting trans-1,4-cyclohexanediisocyanate with a mixed polyester. The mixed polyester can be the copolymerization condensation product of an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, or a separate physical blend thereof reacted with a polyol. The polyurethane can also contain small amounts of non-extractable epoxies and carbodiimides. The urethane has very good hydrolytic stability in comparison with prior art polyurethane systems and also very good fuel resistance and anti-icing resistance. A preferred area of use is as aircraft fuel tanks and anti-icing components.
摘要:
Two-part coating compositions are described comprising an aliphatic cyclic secondary amine and methods of coating surfaces of a (e.g. drinking water) pipeline.
摘要:
The present invention provides a coating composition, comprising a crosslinkable polyester-polyurethane polymer having at least two carbamate sites and a glass transition temperature of at least 50°C; a crosslinker; and at least one adjuvant selected from the group consisting of carriers, lubricants, pigments, rheological control agents, and flow control agents and a packaging container comprising said coating composition.
摘要:
The present invention is directed to coatings that provide improved retort and tropical decay resistance for use on metal food containers. The coatings generally comprise a carbamated polyol formed by the reaction between a polyol, an alkylene oxide and an alkyl carbamate. A crosslinker reactive with the carbamate functionality is used to react with the carbamate moiety. Methods for improving retort resistance and resistance to tropical decay are also disclosed, as are substrates coated with the present compositions.