摘要:
A brominated unsaturated polyester resin containing a hydroxyl value of about 35 or less and a hydroxyl:acid molar ratio of about 2:1 to about 1:4. The brominated unsaturated polyester resin is prepared from a polyfunctional carboxylic acid, a monocarboxylic acid, and a polyfunctional glycol or alcohol that contains bromine under polyester esterification reaction conditions. The brominated unsaturated polyester resin can be incorporated into a resin composition that also contains vinyl monomer. The invention is also directed to a method of making a brominated unsaturated polyester resin, and to castings, coatings, and laminate panels containing cured brominated unsaturated polyester resin compositions of the invention.
摘要:
To provide a method to treat an article and more specifically an aircraft surface in order to prevent icing and to provide a coating that emits very low volatile organic compounds (VOC) during application and setting. Icing on critical aircraft surfaces creates dangerous conditions which impair the stability of the aircraft. The specific areas are referred to as 'cold-soak' conditions and some areas on the 'leading edges' of the wings. The present invention eliminates icing on these surfaces. Environmental icing due to weather is a related problem, but is not the direct problem concerning the present invention. Ice will not form on the surface of certain polymer coatings with low surface energy such as TeflonTM. This is a consequence of the high contact angle between the water droplet and the surface that establishes a non-wetting surface. The objective of the present invention is to implement such coatings and a deposition process. Effective implementation will also result in a coating formulation and deposition process. The coating of the present invention may be used for other objects such as automobiles, consumer products, such as refrigerators, stoves, etc.
摘要:
Electroluminescent devices have, as the active layer, a polymer having a chain comprising a plurality of electroluminescent groupings, adjacent pairs of the electroluminescent groupings being connected via two benzene rings linked by only a single covalent bond, at least one of the benzene rings bearing, at a position ortho to the covalent bond, a substituent of sufficient size that the two benzene rings are essentially not conjugated with each other. Preferred electroluminescent groupings comprise a chain of three or more para-phenylene groups connected to one another by amide, carboxy, ester, urea, urethane or vinyl groups. The polymers have a fixed conjugation length with predictable electroluminescent properties.
摘要:
A composition comprising a thermoset polymer prepared by copolymerizing a solution of an iodine containing, crosslinkable, unsaturated polyester resin dissolved in a vinyl monomer. The composition has been found to be useful as radiopaque agents and in the manufacture of radiopaque, flame retardant articles.
摘要:
A halogen-containing unsaturated alkyd is synthesized by reacting a monobasic carboxylic acid and/or monohydric alcohol containing a post-halogenatable carbon-to-carbon double bond with an unsaturated polybasic carboxylic acid and a polyhydric alcohol and post-halogenating the resulting unsaturated alkyd. A flame-retardant unsaturated polyester resin composition comprising said halogen-containing unsaturated alkyd may be used for fabricating various shaped articles such as fame-retarded electrical laminates.
摘要:
Unsaturated polyesters prepared from an unsaturated dicarboxylic acid, dicyclopentadiene and dibromoneopentyl glycol have lower cost, lower viscosity and other beneficial properties compared to the similar polyesters prepared without the dicyclopentadiene. Improved resin color is obtained by using an aryl sulfonic acid as the esterification catalyst, and upon completion of the reaction, neutralizing the catalyst.
摘要:
A brominated unsaturated polyester resin containing a hydroxyl value of about 35 or less and a hydroxyl:acid molar ratio of about 2:1 to about 1:4. The brominated unsaturated polyester resin is prepared from a polyfunctional carboxylic acid, a monocarboxylic acid, and a polyfunctional glycol or alcohol that contains bromine under polyester esterification reaction conditions. The brominated unsaturated polyester resin can be incorporated into a resin composition that also contains vinyl monomer. The invention is also directed to a method of making a brominated unsaturated polyester resin, and to castings, coatings, and laminate panels containing cured brominated unsaturated polyester resin compositions of the invention.