摘要:
Compositions adhésive à base de copolymère d'éthylène et d'ester d'hydroxyalkyle ou d'ester d'époxyalkyle caractérisée en ce qu'elle contient un composé organométallique de plomb, d'étain ou de titane.
摘要:
A crosslinkable composition comprising (A) a copolymer of ethylene and an unsaturated silane compound having hydrolysable group(s) optionally with other comonomers and (B) a defined dihydrocarbyl tin (IV) carboxylate compound as silanol condensation catalyst. The tin compound is preferably dibutyl tin maleate. The composition can be thermoformed to produce articles having improved surface finish.
摘要:
The invention provides a fast curing, shelf stable, one-component alkoxy-functional RTV system in which there is present, in the base polymer blend, a certain amount of mono-alkoxy terminated diorganopolysiloxane polymer species.
摘要:
The invention provides a vulcanizable silicone rubber composition comprising 25 to 90% of a devolatilized silanol/terminated diorgano-siloxane base polymer having a viscosity from 2,000 to 250,000 centipoises at 25°C; from 0 to 40% a devolatilized diorganopolysiloxane fluid plasticizer terminated with triorganosiloxy groups having a viscosity from 50 to 100,00 centipoises at 25°C; from 2 to 15% of an oxime crosslinking agent of the formula where y is 2.2 to 3, x is 0.8 to 1.0, and R 3 , A and B are organo groups; from 0.01 to 0.5% of an organo tin catalyst; and from 5 to 60 percent by weight of a hydrophobic calcium carbonate filler. The composition is a low modulus silicone rubber suitable as a low odor, one component, room temperature vulcanizable, formed-in-place gasketing sealant.