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1.发明申请公开(公告)号：US20220227996A1
公开(公告)日：2022-07-21
申请号：US17608517
申请日：2020-04-24
IPC分类号： C08L83/04 , C09D183/04
摘要： A room-temperature-vulcanizing (RTV) silicone rubber composition having an organopolysiloxane having a hydrolyzable silyl group at the molecular chain end as a base component (base polymer), used in combination with a lactate silane capable of eliminating a lactic acid ester as a crosslinking agent, and blended with a predetermined curing accelerator, etc. can give a cured product (silicone rubber) that exhibits good moisture resistance as well as excellent safety, adhesiveness, curability, and low odor.
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公开(公告)号：US20210070912A1
公开(公告)日：2021-03-11
申请号：US16956211
申请日：2018-11-28
IPC分类号： C08F299/08 , C08F2/48
摘要： An ultraviolet curable organopolysiloxane composition which contains: (A) a linear or branched organopolysiloxane which contains, as monovalent substituents bonded to a silicon atom at an end of the molecular chain, at least three groups represented by formula (1) and/or formula (2) in each molecule, while having the main chain composed of repeated diorganosiloxane units (in the formulae, a represents a number of 1-3; and the broken line represents a bonding hand); (B) a linear or branched organopolysiloxane which contains at least two groups represented by formula (3) in each molecule, while having the main chain composed of repeated diorganosiloxane units R1bR23-bSi (3) (in the formula, R1 represents an alkenyl group; R2 represents a monovalent hydrocarbon group; and b represents a number of 1-3); and (C) a photoinitiator. With use of this ultraviolet curable organopolysiloxane composition, the hardness of a cured product obtained therefrom is easily controlled, and good surface curability and good curability in deep portions are achieved even in the presence of oxygen. Consequently, this ultraviolet curable organopolysiloxane composition enables the achievement of a silicone gel (a gel-like cured product) which has been cured at a substantially uniform crosslinking density (with a substantially uniform penetration) without depending on the irradiance of ultraviolet light (the amount of irradiation energy).
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3.发明申请公开(公告)号：US20190177542A1
公开(公告)日：2019-06-13
申请号：US16325331
申请日：2017-06-16
发明人： Akira UTA , Takafumi SAKAMOTO
IPC分类号： C08L83/04 , C09J183/04 , C09J11/06 , C09J11/04 , C09K3/10 , C09D183/04 , C09D7/63 , C09D7/62
摘要： This dealcoholization room-temperature curable organopolysiloxane composition contains (A) a diorganopolysiloxane having a silicon atom-bonded hydroxy group and/or a hydrolyzable silyl group at both ends of the molecular chain, and has a coefficient of viscosity of 20-1,000,000 mPa·s, (B) an organopolysiloxane which is a partial (co-)hydrolysis-condensation product of a hydrolyzable organosilane compound having one or more silicon atom-bonded alkenyl groups and 1-3 silicon atom-bonded alkoxy groups, per molecule, (C) a hydrolyzable organosilane compound having one or more phenylene backbones and two or more amino groups, per molecule, and/or a partial hydrolysis-condensation product thereof. The dealcoholization room-temperature curable organopolysiloxane composition has good curability and storage stability even when the composition does not contain a metal catalyst, is less toxic to the human body and is environmentally friendly, is cost-competitive, and has good rubber physical properties and adhesiveness after being cured.
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公开(公告)号：US20190135978A1
公开(公告)日：2019-05-09
申请号：US16091043
申请日：2017-02-28
IPC分类号： C08G65/336 , C09K3/10
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), R1 and R2 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.)
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公开(公告)号：US20180163113A1
公开(公告)日：2018-06-14
申请号：US15579509
申请日：2016-05-25
IPC分类号： C09K5/14 , C08G77/52 , C08K3/22 , C08K7/18 , H01L23/373
CPC分类号： C09K5/14 , C08G77/52 , C08K3/00 , C08K3/22 , C08K7/18 , C08K2003/2227 , C08K2201/001 , C08L83/14 , H01L23/36 , H01L23/373 , H01L23/3733 , H01L23/3737
摘要： Provided is a heat dissipation material comprising a mesogen/silicon compound (co)polymer having a number average molecular weight of 1,000-500,000, represented by general formula (1). (Ar is a mesogen group selected from the structure represented by the following formulas. a represents a positive number from 0.5 to 1, b represents a number from 0 to 0.5 (with the caveat that a and b each represent the ratio of each number of repeating units in molecules, and a+b=1). R1 is independently a monovalent hydrocarbon group which does not independently include a C1-8 aliphatic unsaturated bond. R2 is independently a hydrogen atom, —Si(CH3)3, —Si(CH3)2(OH), —Si(CH3)2(CH═CH) or —Si(CH3)2(CH2—CH═CH2)).This heat dissipation material has excellent thermal conductivity, and further shows good thermoplastic properties and has excellent moldability, and hence can be suitably used as a resin material for heat dissipation materials and semiconductor devices and electronic parts in particular.
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6.发明申请公开(公告)号：US20220220260A1
公开(公告)日：2022-07-14
申请号：US17708317
申请日：2022-03-30
发明人： Akira UTA , Takafumi SAKAMOTO
IPC分类号： C08G77/16 , C07F7/18 , C08G77/24 , C08K5/5419
摘要： This organopolysiloxane composition, when cured at room temperature by moisture in the atmosphere, provides a silicone rubber cured product having good self-adhesiveness to a magnesium alloy. The organopolysiloxane composition contains (A) an organopolysiloxane having a hydroxy group and/or a hydrolysable silyl group at both ends of the molecular chain, (B) an organic silicon compound other than (A) and (C), having at least three hydrolysable groups bonded to a silicon atom per molecule, and/or a partial hydrolysis-condensation product thereof, and (C) a silane coupling agent having a specific molecular structure having a carboxylic acid silyl ester bond. Furthermore, a novel compound, having an alkoxysilyl group and a carboxylic acid silyl ester group per molecule, can have improved adhesiveness/bonding properties with respect to a base material due to the effect of carboxylic acid after hydrolysis thereof.
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7.发明申请公开(公告)号：US20220162393A1
公开(公告)日：2022-05-26
申请号：US17602682
申请日：2020-03-26
发明人： Akira UTA , Shigeki YASUDA , Tetsuro YAMADA , Munenao HIROKAMI , Taiki KATAYAMA , Takafumi SAKAMOTO
IPC分类号： C08G77/16 , C08K5/31 , C08K5/5419 , C08K5/544 , C08K3/26 , C08K3/04 , C08K9/04 , C08J3/24 , C09K3/10
摘要： A room-temperature-curable organopolysiloxane composition for an oil seal, wherein an organosilane compound containing a specific organo-oxymethyl group and represented by formula (1) and/or a partial hydrolysis condensate of said compound is used as a curing agent (crosslinking agent), and an organic compound having a guanidine skeleton is added in combination as a curing catalyst. (In the formula, each R1 is independently a C1-12 unsubstituted or substituted monovalent hydrocarbon group, R2 is a C1-12 unsubstituted or substituted monovalent hydrocarbon group, Y is a hydrolyzable group, and n is 0, 1 or 2.)
It is thus possible to obtain a cured product having good rubber properties, adhesiveness, and engine oil resistance after curing even without containing a metal-based catalyst.-
公开(公告)号：US20210054200A1
公开(公告)日：2021-02-25
申请号：US16982457
申请日：2019-02-26
摘要： Provided is a silicone gel composition containing, as essential components: (A) an organopolysiloxane containing an alkenyl group bonded to two or more silicon atoms in one molecule, the organopolysiloxane comprising (a-1) a branched organopolysiloxane having an alkenyl group bonded to three or more silicon atoms only at an end of a molecular chain in one predetermined molecule, and (a-2) a linear organopolysiloxane having an alkenyl group bonded to two or more silicon atoms only at both ends of a molecular chain in one predetermined molecule; (B) a linear organohydrogenpolysiloxane containing hydrogen atoms bonded to two or more silicon atoms in one predetermined molecule; and (C) a platinum-based curing catalyst. Curing the silicone gel can provide a silicone gel cured product which has a degree of penetration of 40-100 as defined according to JIS K2220, has a free oil content of 15 mass % or less, has a low modulus and low stress, and does not exhibit oil bleeding over time.
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公开(公告)号：US20190169373A1
公开(公告)日：2019-06-06
申请号：US16267652
申请日：2019-02-05
IPC分类号： C08G77/08 , B01J31/22 , C09J183/04 , C07F5/06 , C08L83/04 , C09K3/10 , C09D183/04
CPC分类号： C08G77/08 , B01J31/22 , C07F5/069 , C08G77/18 , C08G77/20 , C08K5/0091 , C08L83/04 , C09D183/04 , C09J183/04 , C09K3/1018
摘要： Provided is a room temperature-curable resin composition containing an aluminum chelate compound. This aluminum chelate compound is an aluminum chelate compound having a β-dicarbonyl compound represented by the following general formula (1): wherein each of R1 to R3 represents a monovalent hydrocarbon group or a halogen atom; R4 represents a hydrogen atom or a monovalent hydrocarbon group; and A is a group selected from a group represented by the following formula (2) and a group represented by —OR8: wherein each of R5 to R7 represents a monovalent hydrocarbon group or a halogen atom; and R8 represents a monovalent hydrocarbon group.
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公开(公告)号：US20190085002A1
公开(公告)日：2019-03-21
申请号：US16083214
申请日：2017-03-08
发明人： Taiki KATAYAMA , Isao IWASAKI , Takafumi SAKAMOTO
IPC分类号： C07F7/18 , C08K5/5419
摘要： Provided are an organosilicon compound capable of improving the storage stability of a composition (curability after long-term storage); and a method for producing the same. The organosilicon compound has, in one molecule, at least one carboxylic acid ester group represented by the following general formula (1) and at least one hydrolyzable silyl group represented by the following general formula (2): —OC(═O)CH2R1 (1) wherein R1 represents a hydrogen atom or a methyl group; —SiR23-nYn (2) wherein R2 represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, Y represents a hydrolyzable group, and n represents an integer satisfying 1≤n≤3.
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