Patents by Inventor Chiyuki Shimizu
Chiyuki Shimizu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5093389Abstract: A room temperature-curable composition comprising (A) a silanol-terminated polydiorganosiloxane having a viscosity measured at 25.degree. C. of from 100 to 200,000 cSt, (B) an epoxy-terminated polyether, (C) an organosilicon compound, (D) an inorganic filler, and (E) a curing catalyst. The composition is suitably used as a building sealant which causes no fouling of the areas surrounding joints even after applied to the joints.Type: GrantFiled: March 12, 1990Date of Patent: March 3, 1992Assignee: Toshiba Silicone Co., Ltd.Inventor: Chiyuki Shimizu
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Patent number: 5061739Abstract: A room temperature curing composition comprising:(A) a silanol-terminated polydiorganosiloxane;(B) a hydrolyzable silyl-terminated polymer obtained by reacting:(a) an epoxy-terminated polyether;(b)(i) an heterocyclic compound containing imino groups, and/or;(ii) an aromatic compound or a heterocyclic compound containing mercapto groups; and,(c) an organosilicon compound containing an epoxy group and a hydrolyzable group;(C) an inorganic filler; and,(D) a curing catalyst.Type: GrantFiled: November 13, 1989Date of Patent: October 29, 1991Assignee: Toshiba Silicone Co., Ltd.Inventor: Chiyuki Shimizu
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Patent number: 5013807Abstract: A room-temperature curable composition comprising(A) 100 parts by weight of a polymer having a hydrolyzable silyl group at the terminal of the molecular chain, the main chain being substantially a polyether,(B) from 0.01 to 20 parts by weight of an organic silicon compound represented by the general formula ##STR1## wherein two R.sup.1 s, which may be the same or different, each represents a monovalent hydrocarbon group; two R.sup.2 s, which may be the same or different, each represents an unsubstituted hydrocarbon group having from 1 to 6 carbon atoms; two Q.sup.1 s, which may be the same or different, each represents a divalent hydrocarbon group; a and b each represents 2 or 3; and A represents a hydrogen atom, a monovalent hydrocarbon group, or a monovalent group shown by the formula ##STR2## wherein R.sup.1, R.sup.2 and Q.sup.1 have the same meaning as defined above and c represents 2 or 3; and(C) from 0.01 to 10 parts by weight of a curing catalyst.Type: GrantFiled: May 18, 1989Date of Patent: May 7, 1991Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 5004793Abstract: A room temperature-curable composition comprising(a) 100 parts by weight of a siloxane-amide block copolymer represented by the formula (1) ##STR1## wherein Y represents a hydrolyzable group-containing organosilyl group of the formula --SiR.sup.5.sub.a X.sub.a-ain whichR.sup.5 represents a substituted or unsubstituted monovalent hydrocarbon group,a is an integer of 0, 1 or 2, andX is directly bonded to the silicon atom and represents a hydolyzable group or a hydroxyl group,R.sup.1 represents a divalent group selected from the group consisting of ##STR2## in which R.sup.6 represents a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group, or an organosilyl group of the formula --SiR.sup.8.sub.b X.sub.3-bin whichR.sup.8 represents a substituted or unsubstituted monovalent hydrocarbon group,b is an integer of 0, 1, 2, or 3, and X is the same as defined above, andR.sup.Type: GrantFiled: July 3, 1989Date of Patent: April 2, 1991Assignee: Toshiba Silicone Co., Ltd.Inventors: Hisayuki Nagaoka, Michio Zenbayashi, Chiyuki Shimizu
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Patent number: 4950707Abstract: A polyether having molecular weight from 1,000 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula (P): ##STR1## where R.sup.1, R.sup.2, R.sup.6 and R.sup.7 individually represent a divalent hydrocarbon group, R.sup.4 represents a monovalent hydrocarbon group, R.sup.8 represents an alkyl group with 1 to 6 carbon atoms, X represents an aromatic or heterocyclic ring, a represents a number from 1 to 3, m represents a number from 10 to 500, n represents a number of 1 or greater is produced and utilized in room temperature curing compositions containing inorganic filler and curing catalyst. There is also disclosed a method for producing the above polyether by reacting polyoxyalkylene end-blocked with epoxy groups, dimercapto compound and organo silicon compound.Type: GrantFiled: April 20, 1989Date of Patent: August 21, 1990Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 4933415Abstract: There are provided polyethers end-blocked with hydrolyzable silyl groups which have molecular weight from 500 to 50,000 and are represented by the formula: ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 individually represent a divalent hydrocarbon group, R.sup.5 represents a monovalent hydrocarbon group, R.sup.6 represents an alkyl group with 1 to 6 carbon atoms, A represents a substituted or non-substituted divalent aromatic group, a represents a number of 1 to 3, m represents a number of 10 to 500 and n represents a number of 1 or greater. The polyether is produced by reacting an epoxy end-blocked polyoxyalkylene, a mono-epoxy substituted hydrolyzable silane, and an aromatic diamine.Type: GrantFiled: August 26, 1988Date of Patent: June 12, 1990Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 4877855Abstract: A siloxane-amide block copolymer represented by formula (I): ##STR1## wherein the symbols are as defined in the specification, is disclosed. The polymer of formula (I) is produced by reacting a polycondensate of a diaminosiloxane and a dicarboxylic acid dihalide with an epoxysilane to induce ring-opening addition reaction between the terminal amino groups of the polymer and the epoxy group of the epoxysilane. The siloxane-amide block copolymer exhibits excellent processability and reactive curability due to the hydrolyzable silyl groups at the both terminals.Type: GrantFiled: August 5, 1988Date of Patent: October 31, 1989Assignee: Toshiba Silicone Co., Ltd.Inventors: Hisayuki Nagaoka, Michio Zenbayashi, Chiyuki Shimizu
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Patent number: 4873272Abstract: A polyether having molecular weight from 1,000 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula (P): ##STR1## where R.sup.1, R.sup.2, R.sup.6 and R.sup.7 individually represent a divalent hydrocarbon group, R.sup.4 represents a monovalent hydrocarbon group, R.sup.8 represents an alkyl group with 1 to 6 carbon atoms, a represents a number from 1 to 3, m represents a number from 10 to 500, n represents a number of 1 or greater and --N.dbd.X.dbd.N-- represents a residue group of a diimino heterocyclic compound, from which nitrogen-bonded hydrogen atoms are eliminated, said diimino heterocyclic compound having no ##STR2## bond in a molecule is produced and utilized in room temperature curing compositions containing inorganic filler and curing catalyst. There is also disclosed a method for producing the above polyether by reacting polyoxyalkylene end-blocked with epoxy groups, diimino heterocyclic compound and organo silicon compound.Type: GrantFiled: November 9, 1987Date of Patent: October 10, 1989Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 4847357Abstract: A polyether having molecular weight from 1,000 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula (P): ##STR1## where R.sup.1, R.sup.2, R.sup.6 and R.sup.7 individually represent a divalent hydrocarbon group, R.sup.4 represents a monovalent hydrocarbon group, R.sup.8 represents an alkyl group with 1 to 6 carbon atoms, X represents an aromatic or heterocyclic ring, a represents a number from 1 to 3, m represents a number from 10 to 500, n represents a number of 1 or greater is produced and utilized in room temperature curing compositions containing inorganic filler and curing catalyst. There is also disclosed a method for producing the above polyether by reacting polyoxyalkylene end-blocked with epoxy groups, dimercapto compound and organo silicon compound.Type: GrantFiled: October 1, 1987Date of Patent: July 11, 1989Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 4786667Abstract: Polyethers end-blocked with hydrolyzable silyl groups are manufactured by reacting an epoxy end-blocked linear polyoxyalkylene, a mono-epoxy substituted hydrolyzable silane and an aromatic diamine and compounded with filler to produce a room temperature curable elastomer.Type: GrantFiled: May 22, 1987Date of Patent: November 22, 1988Assignee: Toshiba Silicone Co., Ltd.Inventors: Chiyuki Shimizu, Tamio Yoshida
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Patent number: 4476278Abstract: A composition curable to a dustproof film comprising:(A) 100 parts by weight of an alkyd resin,(B) 5 to 200 parts by weight of methyltrimethoxysilane,(C) a curing catalyst; and(D) 50 to 5000 parts by weight of a solvent mixture consisting of(a) a volatile organosilicon compound which has a boiling point of 70.degree. to 250.degree. C. at atmospheric pressure and has a formula selected from the group consisting of(R.sup.1).sub.4 Si, (R.sup.2).sub.3 SiO[(R.sup.3).sub.2 SiO].sub.m Si(R.sup.2).sub.3R.sup.4 Si[OSi(R.sup.5).sub.3 ].sub.3 and [(R.sup.6).sub.2 SiO].sub.nwherein R.sup.1 to R.sup.6 respectively represent the same or different alkyl groups, m represents 0 or a positive integer and n represents a positive integer of 3 or above, and(b) a hydrocarbon solvent substantially free of methanol, wherein the amount of (a) is 5 to 95 wt. % of the total amount of (a) and (b).Type: GrantFiled: January 5, 1984Date of Patent: October 9, 1984Assignee: Toshiba Silicone Co., Ltd.Inventor: Chiyuki Shimizu
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Patent number: 4448814Abstract: There is provided a method of forming a stainproof film on silicone elastomers comprised of coating a surface with a combination of an aminoxy functional organosilicon compound, a mixture or condensation products, of a benzene soluble polyorganosiloxane and a silanol-terminated polydiorganosiloxane, together with a mixed solvent comprised of a volatile organosilicon compound and a hydrocarbon solvent.Type: GrantFiled: December 23, 1981Date of Patent: May 15, 1984Assignee: General Electric CompanyInventors: Chiyuki Shimizu, Nobuo Nakamura
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Patent number: 4395443Abstract: There is provided a silicone film-forming composition and method for forming dust-resistant films from such compositions which are comprised of a condensation product of a benzene soluble polysiloxane and a silanol terminated polydiorganosiloxane in combination with a mixed solvent comprised of a volatile organosilicon compound and a hydrocarbon solvent.Type: GrantFiled: May 7, 1981Date of Patent: July 26, 1983Assignee: Toshiba Silicones, Ltd.Inventors: Chiyuki Shimizu, Kiyoshi Hosokowa
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Patent number: 4374950Abstract: An adhesive polyorganosiloxane composition suitably employable as a sealant for joint portions of buildings, constructions, etc. which comprises:(A) a polydiorganosiloxane being end-blocked by silanol group and having the viscosity of 100-200,000 cSt at 25.degree. C.;(B) an aminoxy group-containing organosilicon compound having organoaminoxy groups of more than 2 per a molecule on the average;(C) an inorganic filler; and(D) a monovalent alcohol having the formula R--OH, in which R is a primary or secondary hydrocarbon group selected from the group consisting of a monovalent saturated aliphatic hydrocarbon group and an aralkyl group, and having the vapor pressure of at least 0.1 mmHg at 20.degree. C.Type: GrantFiled: October 29, 1981Date of Patent: February 22, 1983Assignee: Toshiba Silicone Co., Ltd.Inventor: Chiyuki Shimizu
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Patent number: 4367293Abstract: There is disclosed a compositon forming an elastic foam at normal temperature essentially comprising(A) polydiorganosiloxane end-blocked by silanol group and a viscosity within the range between 500 and 200,000 cSt at 25.degree. C.,(B) an aminoxy group-containing organosilicon compound having more than two silicon-bonded organoaminoxy groups on the average in one molecule,(C) a silicon-hydrogen bond containing polyorganosiloxane having more than two silicon-hydrogen bonds on the average in one molecule, with the proportion of said silicon-hydrogen bonds being 10% or more of the number of silicon atoms,(D) fumed silica,(E) an isocyanato group-containing organic compound, and optionally(F) a polyhydric alcohol having two or more alcoholic hydroxyl groups bonded to primary carbon atoms and/or two or more alcoholic hydroxyl groups bonded to secondary carbon atoms in one molecule.Type: GrantFiled: April 28, 1982Date of Patent: January 4, 1983Assignee: Toshiba Silicone Co., Ltd.Inventor: Chiyuki Shimizu
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Patent number: 4358558Abstract: There is provided a paintable room temperature curable polyorganosiloxane composition which is comprised of a silanol-terminated polydiorganosiloxane, an aminoxy functional organosilicon compound, an inorganic filler and a monohydric unsaturated alcohol containing a carbon-to-carbon triple bond and a hydroxyl group bonded with a primary or secondary carbon atom.Type: GrantFiled: December 23, 1981Date of Patent: November 9, 1982Assignee: Toshiba Silicones Ltd.Inventor: Chiyuki Shimizu