摘要:
Provided is a room temperature moisture-curable silicone gel composition containing: (A) diorganopolysiloxane, both terminals of which are blocked by silanol groups; (B) hydrolysable organosilicon compound represented by Formula (2) and/or a partial hydrolysate thereof
(where R 2 is a monovalent hydrocarbon group, R 3 is an alkyl group or a cycloalkyl group, and a is 2 or 3.); (C) a curing catalyst; and (D) a heat-resistant aid containing a homogeneous mixture of (D-a), (D-b), and (D-c) (where (D-a) is organopolysiloxane having a viscosity of 10-10,000 mPa·s at 25°C, (D-b) is carboxylate of cerium, and (D-c) is a titanium compound and/or a partial hydrolytic condensate thereof). This room temperature moisture-curable silicone gel composition can be a silicone gel cured product which has a small variation rate of low-stress properties evaluated by the index such as penetration even under heat-resistant conditions exceeding 230°C and which has excellent heat-resistance.
摘要:
Provided is a room temperature-curable organopolysiloxane composition for preventing aquatic organisms from adhering to and growing on an underwater structure. The composition comprises: (A) 100 parts by mass of an organopolysiloxane represented by the following general formula (1)
wherein R 1 represents either a hydrogen atom or a monovalent hydrocarbon group that may have a substituent group, and n represents an integer of not smaller than 1; (B) 0.1 to 30 parts by mass of a hydrolyzable organosilicon compound and/or a partial hydrolysis condensate thereof, represented by the following general formula (2)
wherein R 1 represents either a hydrogen atom or a monovalent hydrocarbon group that may have a substituent group, R 2 represents either an alkyl group that may have a substituent group or a cycloalkyl group, and a represents an integer of 1 to 3; (C) 0.001 to 20 parts by mass of a curing catalyst; and (G) 0.01 to 100 parts by mass of a bleed oil.
摘要:
Provided is a novel polyoxyalkylene compound which contains, at a molecular chain terminal, at least one reactive silicon-containing group represented by formula (1) per molecule and which has a main chain that is a polyoxyalkylene polymer. Also provided are: a process for producing the novel polyoxyalkylene compound; a room-temperature-curable composition which includes the compound as a main component and can contain any of various crosslinking agents; a sealing material; and an article.
(In formula (1), R 1 and R 2 are each a monovalent hydrocarbon group, a hydrogen atom, or a triorganosiloxy group; n is 2 or larger; m is 1 or larger; and the broken line is a linking bond.)
摘要:
A two-component type room temperature fast-curing organopolysiloxane composition which is a room temperature curing organopolysiloxane composition of a two-component and dealcohol type and which comprises, as curing agents, a first agent containing a hydrolyzable organosilane compound represented by formula (3) and/or a partially hydrolyzed condensation product thereof and a second agent containing a curing catalyst. This composition has particularly excellent fast-curing properties and deep-curing properties and provides a cured product having both high storage stability and high durability.
(R 6 represents an unsubstituted or substituted monovalent hydrocarbon group having 1-20 carbon atoms; R 7 represents an unsubstituted or substituted alkyl group having 1-20 carbon atoms or an unsubstituted or substituted cycloalkyl group having 3-20 carbon atoms; and a is from 1 to 3.)
摘要:
Provided is a room temperature-curable organopolysiloxane composition that is superior in fast curably, can form a cured product superior in storage stability and durability, and can further be produced in an industrially advantageous manner using more highly versatile materials. The room temperature-curable organopolysiloxane composition contains: (A) 100 parts by mass of an organopolysiloxane represented by the following general formula (1)
wherein R 1 represents a hydrogen atom or a monovalent hydrocarbon group, and n represents an integer of not smaller than 1; (B) a hydrolyzable organic silicon compound and/or a partial hydrolysis condensate thereof that are or is in an amount of 0.1 to 30 parts by mass per 100 parts by mass of the component (A), and represented by the following general formula (2)
wherein R 1 represents a hydrogen atom or a monovalent hydrocarbon group, R 2 represents an alkyl group or a cycloalkyl group, and a represents an integer of 1 to 3; and (C) a curing catalyst in an amount of 0.001 to 20 parts by mass per 100 parts by mass of the component (A).