Two Carbons Bonded Directly To The Same Oxygen Patents (Class 556/445)
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Patent number: 5281738Abstract: The present invention relates to certain bis[4-(2,6-dialkyl)phenol]silane derivatives which are useful as inhibitors of LDL lipid peroxidation and as antiatherosclerotic agents.Type: GrantFiled: September 2, 1992Date of Patent: January 25, 1994Assignee: Merrell Dow Pharmaceuticals Inc.Inventors: Roger A. Parker, Simon J. T. Mao
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Patent number: 5281731Abstract: A convergent synthesis of 19-nor-vitamin D compounds, specifically 19-nor-1.alpha.,25-dihydroxyvitamin D.sub.3, is disclosed. The synthesis can also readily be utilized for preparing other 1.alpha.-hydroxylated 19-nor-vitamin D compounds. The key step in the synthesis is a suitable application of Lythgoe's procedure i.e. a Horner-Wittig reaction of the lithium anion of a phosphine oxide with a Windaus Grundmann ketone to give, after any necessary deprotection, the desired 19-nor-vitamin D compound.Type: GrantFiled: November 20, 1992Date of Patent: January 25, 1994Assignee: Wisconsin Alumni Research FoundationInventors: Hector F. DeLuca, Heinrich K. Schnoes, Kato L. Perlman, Rolf E. Swenson
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Patent number: 5274156Abstract: A method is described of producing a mixture of silicone polyethers from a mixture of at least two alkenyl ether terminated organic oxyalkylene compounds having different molecular weights and an organosilicon compound having at least two hydride substituents. In an alternate embodiment, an organocyclosilazane is used, and either alkyl or alkenyl ether terminated organic oxyalkylene compounds can be employed. The mixtures have utility in the conditioning of skin.Type: GrantFiled: May 7, 1993Date of Patent: December 28, 1993Assignee: Dow Corning CorporationInventors: Gary E. LeGrow, Milan F. Sojka
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Patent number: 5262556Abstract: The invention relates to a process for the reaction of fluorinated or chlorinated aromatics with electrophiles at the ortho position relative to the fluorine or chlorine atom, characterized in that a strong base is added to a mixture of the fluorinated or chlorinated aromatic and the electrophile.Type: GrantFiled: May 6, 1992Date of Patent: November 16, 1993Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernard Riefling, Jurgen Seubert, Volker Reiffenrath, Reinhard Hittich
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Patent number: 5260469Abstract: Siloxane compounds represented by the formula: ##STR1## wherein: (a) each BuO group in the molecule is independently a bivalent aliphatic --C.sub.4 H.sub.8 --O-- group;(b) R.sup.1 and R.sup.2 are each independently alkyl containing from 1 to about 18 carbon atoms, phenyl, 1-phenylethyl, 2-phenylethyl, 2-phenylpropyl, or 1-methyl-1-phenylethyl;(c) the average value of m is in the range of from 2 to about 6;(d) the value of n is an integer in the range of from 1 to about 6;(e) the value of z is an integer in the range of from 1 to about 6;(f) the average value of a is in the range of from 0 to 1;(g) the average value of b is in the range of from 0 to 1; and(h) the sum of the average values of a and b is 1;are useful as components of cosmetics.Type: GrantFiled: March 26, 1992Date of Patent: November 9, 1993Assignee: PPG Industries, Inc.Inventor: Timothy P. Swiatek
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Patent number: 5250647Abstract: Organosilicon compounds containing alkenyl groups and comprising average units of the formula ##EQU1## in which R may be the same or different and are selected from monovalent hydrocarbon radicals having from 1 to 18 carbon atom(s) per radical and monovalent halogenated hydrocarbon radicals having from 1 to 18 carbon atom(s) per radical, R.sup.1 may be the same or different and is selected from alkyl radicals having from 1 to 8 carbon atom(s) per radical and alkyl radicals having from 1 to 8 carbon atom(s) per radical, which are substituted by one or more ether oxygen atom(s), a is 0 or 1, with an average of from 0.003 to 1.0, b is 0, 1, 2 or 3, with an average of from 0.0 to 3.0, c is 0, 1, 2 or 3, with an average of from 0.0 to 3.0, and the sum a+b+c.ltoreq.4, with an average of from 1.5 to 4.0, with the proviso that each molecule contains at least one radical A, and A is a radical of the formula(H.sub.2 C=CR.sup.4 CHR.sup.3 O(R.sup.5 O).sub.V H.sub.1-x C=CH.sub.2-y (R.sup.2 (OR.sup.5).sub.w OCHR.sup.3 CR.Type: GrantFiled: February 19, 1992Date of Patent: October 5, 1993Assignee: Wacker-Chemie GmbHInventor: Christian Herzig
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Patent number: 5246996Abstract: Novel neopentasiloxane compounds of the general formula Si[OSiR.sub.2 Q].sub.4 wherein R denotes a monovalent hydrocarbon or halohydrocarbon group and Q denotes a group R or a group comprising a block of at least two oxyalkylene units and having a terminal group containing a reactive hydrogen atom, not more than one Q denoting an R group.The invention also encompasses a film-forming composition comprising a curable polyurethane resin and the neopentasiloxane, and the use of the film-forming compositions to provide breathable (water vapour permeable) coatings on textile fabrics.Type: GrantFiled: March 2, 1992Date of Patent: September 21, 1993Assignee: Dow Corning LimitedInventors: James McVie, Martin Rowlands
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Patent number: 5237110Abstract: This invention provides a novel class of vitamin D-related compounds, namely the 1.alpha.-hydroxy-19-nor-vitamin D analogs, as well as a general method for their chemical synthesis. The compounds exhibit pronounced activity in arresting the proliferation of undifferentiated cells, including malignant cells, and in inducing their differentiation, and thus represent novel therapeutic agents for the treatment of malignant and other diseases characterized by the proliferative growth of undifferentiated cells. Formulations for therapeutic use and treatment methods are also provided.Type: GrantFiled: February 16, 1990Date of Patent: August 17, 1993Assignee: Wisconsin Alumni Research FoundationInventors: Hector F. DeLuca, Heinrich K. Schnoes, Kato L. Perlman, Rafal R. Sicinski, Jean M. Prahl
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Patent number: 5225509Abstract: A method for deodorizing polyoxyalkylene polysiloxane mixed block polymers wherein the polysiloxane blocks are linked to the polyether blocks through SiC linkages is disclosed. Hydrogen is allowed to act on the mixed block polymers in the presence of hydrogenation catalysts at temperatures of 20.degree. to 200.degree. C. and a pressure of 1 to 100 bar for a period of 0.5 to 10 hours.Type: GrantFiled: April 1, 1992Date of Patent: July 6, 1993Assignee: Th. Goldschmidt AGInventors: Lothar Heinrich, Helmut Schator
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Patent number: 5210252Abstract: The object of the present invention is to provide a styrene type alkoxysilane compound which is useful as a silane coupling agent or a polymerizable monomer and which can easily be synthesized and is not expensive.A 3-(vinylphenyloxy)propylsilane compound represented by the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrocarbon group having 1 to 4 carbon atoms and n is an integer ranging from 0 to 2.Type: GrantFiled: August 24, 1992Date of Patent: May 11, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tohru Kubota, Toshinobu Ishihara, Mikio Endo, Katsuhiro Uehara
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Patent number: 5208358Abstract: The present invention is a process for preparation of silyl ketene acetals. The process comprises contacting a mixture containing an organosilane having a silicon-bonded hydrogen (organohydrosilane) and a vinylic compound with RhCl(di-tert-butylsulfide).sub.2 as catalyst at a temperature within a range of about 20.degree. C. to 100.degree. C. The RhCl(di-tert-butylsulfide).sub.2 catalyst demonstrates higher activity than that typically described for rhodium catalysts, allowing for lower concentrations of catalyst and lower reaction temperatures to be used while maintaining high conversion to the desired silyl ketene acetals.Type: GrantFiled: July 13, 1992Date of Patent: May 4, 1993Assignee: Dow Corning CorporationInventors: Paul C. Dinh, Jeff A. Gray, Peter Y. K. Lo
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Patent number: 5196558Abstract: Novel siloxane compounds are provided which have 1-5 hydrogen atoms each attached to a silicon atom (SiH group) and 1-5 epoxy or alkoxy - containing organic groups each attached to a silicon atom in a molecule. These siloxane compounds are useful tackifiers to conventional resins, have good affinity to fluorinated silicone resins and rubbers so that they impart adhesion to fluorinated silicone resins and rubbers, and contribute to solvent resistance and minimal moisture permeability.Type: GrantFiled: August 6, 1992Date of Patent: March 23, 1993Assignee: Shin-Etsu Chemical Company, LimitedInventors: Hiroshi Inomata, Yasushi Yamamoto, Yasuo Tarumi, Kenichi Fukuda
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Patent number: 5180845Abstract: A class of organosilanes of the general formula ##STR1## wherein Ar is a divalent aromatic radical; R.sub.f is a defined fluoroalkyl or perfluoroalkyl ether group; X is methyl, R.sub.f Ar as defined above, a halogen other than fluorine, or an alkoxy group; and each one of Y and Z is a halogen other than fluorine or an alkoxy group. These organosilanes are very useful as precursors to polysiloxane coupling agents for bonding fluoropolymers to glass fibers which can withstand the usual fluoropolymer melt-processing temperatures without decomposition.Type: GrantFiled: April 7, 1992Date of Patent: January 19, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: David P. Higley
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Patent number: 5164525Abstract: A process for the conversion of FK-506 (I,R=allyl;1) to FK-525 (XV) and analogous 23-membered ring macrolides differing in the C.1-N.7 segment of the molecule (e.g. XVI) and is also applicable to the analogs FK-523 (XVII) and FK-520 (XVIII). The overall process consists of three stages: (a) initial degradation of the primary macrolide to an acyclic fragment containing a selectively protected C.10-C.34 framework with a protected aldehyde function at C.10 and a free hydroxyl function at C.26, (b) reacylation of the C.26 hydroxyl function with an appropriately N-protected alpha-amino acid moiety, and (c) reintroduction of the C.8 and C.9 carbons followed by regeneration of the FK-macrolide system.Type: GrantFiled: June 30, 1989Date of Patent: November 17, 1992Assignee: Merck & Co., Inc.Inventors: David Askin, Ralph P. Volante, Daisy Joe, Ichiro Shinkai
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Patent number: 5162560Abstract: Azasilacyclopentanes of the general formula ##STR1## are prepared by reacting a dialkoxyalkyl(3-chloro-2-alkylpropyl)silane with a Grignard reagent of the formula R.sup.1 MgBr in the presence of an ether, to make an alkoxyalkylalkenyl(3-chloro-2-alkylpropyl)silane which is reacted with acetyl chloride and a Lewis acid to make chloroalkylalkenyl(3-chloro-2-alkylpropyl)silane which is then reacted with an amine of the formula R.sup.3 NH.sub.2 to make the azasilacyclopentanes.Type: GrantFiled: February 28, 1992Date of Patent: November 10, 1992Assignee: Dow Corning CorporationInventors: Russell K. King, Chi-long Lee
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Patent number: 5159096Abstract: The invention provides an improved solventless hydrosilation process for preparing a siloxane-oxyalkylene copolymers, the improvement comprising conducting the reaction in the presence of at least one sodium metal phosphate.Type: GrantFiled: September 30, 1991Date of Patent: October 27, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Paul E. Austin, Harold D. Furbee, Anne K. McMullen
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Patent number: 5157094Abstract: This invention relates to an aromatic vinyl ether siloxane having the formula ##STR1## wherein A is --CH.sub.2 -- or >C(CH.sub.3).sub.2 ;m has a value of from 1 to 22;R.sub.1 and R.sub.2 are each selected from the group consisting of ##STR2## with the proviso that at least one of R.sub.1 and R.sub.2 is (a) and R.sub.2 can be a mixture of (a) and (b) when m is greater than one,R.sub.3 and R.sub.4 are lower alkyl,r has a value of from 0 to 20,R is alkylene or alkylene phenylene,B is C.sub.2 to C.sub.20 alkylene, arylene or a fluorinated derivative of these radicals,t has a value of from 1 to 100,Z is C.sub.2 to C.sub.3 alkylene andn has a value of from 1 to 10.Type: GrantFiled: August 9, 1990Date of Patent: October 20, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5153292Abstract: This invention relates to divinyl ether siloxanes having the formula ##STR1## wherein Y is alkylene or phenylene optionally substituted with fluorine,R is alkylene or alkylene phenylene,R.sub.1 and R.sub.2 are lower alkyl,A is --CH.sub.2 -- or ##STR2## Z is C.sub.2 and C.sub.3 alkylene, B is halo or lower alkyl,m has a value of from 1 to 10,n has a value of from 1 to 20,r has a value of from 0 to 20,t has a value of from 1 to 100 andv has a value of from 0 to 4.The invention also relates to the process of preparing the present divinyl ether siloxanes and to their use as coating materials.Type: GrantFiled: August 9, 1990Date of Patent: October 6, 1992Assignee: ISP Investments Inc.Inventor: Kou-Chang Liu
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Patent number: 5145879Abstract: Silicone surfactants having a siloxane backbone and a mixture of high and low atomic mass oxyalkylene pendant groups, these polyether pendants having average atomic masses of 1500-6000 and 300-750 respectively. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams having relatively constant breathability. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.Type: GrantFiled: December 31, 1990Date of Patent: September 8, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard A. Budnik, Charles H. Blevins, II, Gerald J. Murphy, Wojciech Grabowski, Raymond L. Cobb
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Patent number: 5145978Abstract: There is disclosed a herbicide composition in which a postemergent herbicide is activated by the inclusion of a silicone glycol adjuvant consisting essentially of (i) a silicone glycol having an average of 4 or 5 ethylene oxide units in its glycol chain and (ii) a silicone glycol dispersant compound for component (i). The composition provides enhanced phytotoxicity in the control of weeds, particularly velvetleaf plants, and shows an improved degree of rainfastness relative to prior art compositions.Type: GrantFiled: February 11, 1991Date of Patent: September 8, 1992Assignee: Dow Corning CorporationInventors: Lenin J. Petroff, David J. Romenesko, Robert A. Ekeland
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Patent number: 5144054Abstract: Novel siloxane derivatives represented by general formula (1): ##STR1## A method for producing the siloxane derivatives and agents such as cosmetic preparations, emulsifying dermatotherapeutic external agents and the like including at least one of the siloxane derivatives are also disclosed.Type: GrantFiled: August 27, 1991Date of Patent: September 1, 1992Assignee: Kao CorporationInventors: Yasushi Shioya, Yuji Suzuki, Ken Takeuchi, Koji Yoshino, Akira Kawamata
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Patent number: 5136068Abstract: The specification discloses an organopolysiloxane-polyoxyalkylene emulsifier for polar in nonpolar liquid emulsions wherein organopolysiloxane-polyoxyalkylene polymer molecules are intentionally cross linked through a cross linking agent joined thereto by nonhydrolyzable bonds and being free of internal hydrolyzable bonds.Type: GrantFiled: April 26, 1989Date of Patent: August 4, 1992Assignee: Dow Corning CorporationInventors: Bradley C. Bahr, Peter Y. Lo, A. Wade Lomas, David J. Romenesko
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Patent number: 5118772Abstract: Novel, alkenyloxy-functional organosilicon compounds are described which contain at least one Si-bonded Y radical per molecule having the formula--(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I),in whichA represents --O--, --S-- or ##STR1## R.sup.2 represents a linear or branched alkylene radical having from 1 to 7 carbon atom(s) per radical or a cycloalkylene radical having from 5 to 7 carbon atoms per radical, R.sup.3 represents a linear or branched alkylene radical having from 2 to 4 carbon atoms per radical, which may be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group, R.sup.4 represents a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms(s) per radical, and z is 0, 1 or 2.The alkenyloxy-functional organosilicon compounds are preferably silanes or organopolysiloxanes.The alkenyloxy-functional organopolysiloxanes can be crosslinked, for example, with ultraviolet light.Type: GrantFiled: June 21, 1991Date of Patent: June 2, 1992Assignee: Wacker-Chemie GmbHInventors: Christian Herzig, Doris Gilch
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Patent number: 5117028Abstract: The present invention relates to a process for the preparation of compounds of the formula I ##STR1## in which R.sup.1 is hydrogen, halogen, alkyl, alkoxy andR.sup.2 is hydrogen, halogen, alkoxy or phenoxy, which may be substituted by halogen, alkyl, alkoxy or alkylthio, by reaction of a compound of the formula II ##STR2## with a compound of the formula II ##STR3## in which R.sup.1 and R.sup.2 have the meanings as in formula I, in the presence of catalytically active amounts of hexachloroplatinic acid, which comprises metering the starting compounds of the formulae II and III simultaneously into the reaction vessel at temperatures of 60.degree. C. to 150.degree. C. and allowing the reaction to go to completion.Type: GrantFiled: September 27, 1991Date of Patent: May 26, 1992Assignee: Hoechst AktiengesellschaftInventor: Harald Knorr
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Patent number: 5110970Abstract: This invention relates to silicone surfactants, and more particularly, to synthesis of siloxane-polyether surfactants having polyether backbones.Type: GrantFiled: March 29, 1991Date of Patent: May 5, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Charles H. Blevins, II, Paul L. Matlock, Gerald J. Murphy
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Patent number: 5104998Abstract: A novel organopolysiloxane compound, which has high surface activity to form an emulsion of the water-in-oil type of various hardly emulsifiable materials, is proposed. The organopolysiloxane compound is a dimethylpolysiloxane having two types of modifying groups including polyether or polyoxyalkylene groups on one hand and higher alkyl groups bonded to the silicon atoms through an ether linkage on the other hand bonded to the silicon atoms. Different from conventional dually modified dimethylpolysiloxanes as an emulsifying agent having modifying groups of polyether groups and higher alkyl groups directly bonded to the silicon atoms, the dually modified dimethylpolysiloxane of the invention can be synthesized easily in a one-step process of the reaction in addition to the advantage of excellent emulsifying activity for various kinds of hardly emulsifiable liquids as compared with conventional emulsifying agents.Type: GrantFiled: May 21, 1991Date of Patent: April 14, 1992Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Shoji Ichinohe
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Patent number: 5084577Abstract: Novel volatile silicon compounds are disclosed which are very suitable for use in cosmetic and household products.Type: GrantFiled: January 3, 1991Date of Patent: January 28, 1992Assignee: The Procter & Gamble CompanyInventor: Raymond E. Bolich, Jr.
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Patent number: 5072013Abstract: Silylated octenyl ethers are used to treat concrete to seal it against penetration by aqueous electrolyte solutions.Type: GrantFiled: April 16, 1991Date of Patent: December 10, 1991Assignee: Henkel Research CorporationInventors: Ta Y. Ching, Lon T. W. Lin, Bert Gruber, Edgar Koeppelman
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Patent number: 5068387Abstract: The present invention relates to a process for the production of mixtures of novel organofunctional alkoxysilanes by the reaction of mixtures of certain substituted organic halides and chlorosilanes with molten sodium dispersed in alkoxysilanes. In the described process, the substituted organic groups of the organic halide replace alkoxy groups of the alkoxysilanes. Also claimed, are organofunctional alkoxysilanes prepared by the claimed process.Type: GrantFiled: December 1, 1989Date of Patent: November 26, 1991Assignee: Dow Corning CorporationInventors: Don L. Kleyer, John L. Speier
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Patent number: 5059704Abstract: There is disclosed a herbicidal composition in which a foliar-applied herbicide is activated by the inclusion of a silicone glycol-silicone alkane terpolymer adjuvant. The composition provides enhanced phytotoxicity in the control of narrowleaf weeds, particularly Barnyardgrass, Quackgrass and Johnsongrass, and often also shows an improved degree of rainfastness relative to similar herbicidal compositions employing prior art silicone glycol adjuvants.Type: GrantFiled: September 12, 1990Date of Patent: October 22, 1991Assignee: Dow Corning CorporationInventors: Lenin J. Petroff, David J. Romensko, Robert A. Ekeland
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Patent number: 5057549Abstract: Novel, alkenyloxy-functional organosilicon compounds are described which contain at least one Si-bonded Y radical per molecule having the formula--(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I),in which A represents --O--, --S-- or ##STR1## R.sup.2 represents a linear or branched alkylene radical having from 1 to 7 carbon atom(s) per radical or a cycloalkylene radical having from 5 to 7 carbon atoms per radical, R.sup.3 represents a linear or branched alkylene radical having from 2 to 4 carbon atoms per radical, which may be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group, R.sup.4 represents a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms(s) per radical, and z is 0, 1, or 2. The alkenyloxy-functional organosilicon compounds are preferably silanes or organopolysiloxanes. The alkenyloxy-functional organopolysiloxanes can be crosslinked, for example, with ultraviolet light.Type: GrantFiled: May 4, 1990Date of Patent: October 15, 1991Assignee: Wacker-Chemie GmbHInventors: Christian Herzig, Doris Gilch
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Patent number: 5049681Abstract: A novel optically active allyl alcohol derivative represented by the following general formulae (I), (II), (III) and (IV): ##STR1## The novel optically active allyl alcohol can be used effectively for producing leucotrienes B.sub.4 by the process of reacting an optically active halogen substituted allyl alcohol and a novel optically active acetylene-substituted allyl alcohol.Type: GrantFiled: July 8, 1988Date of Patent: September 17, 1991Assignee: Nissan Chemical Industries, Ltd.Inventor: Fumie Sato
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Patent number: 5041468Abstract: Novel siloxane-polyether polymers are provided containing cyclic siloxanes which are useful in silicone surfactants for foam polyurethane foam applications. The novel polymers are prepared by reacting a polyhydridosiloxane polymer with a cyclic polysiloxane containing a vinyl group and with an allyl started polyoxyalkylene polymer in the presence of a platinum catalyst. The resulting polymeric products are highly potent and impart flat breathability profiles to foams when used as surfactants in their preparation.Type: GrantFiled: May 23, 1989Date of Patent: August 20, 1991Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard A. Budnik, Gerald J. Murphy
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Patent number: 5037855Abstract: Provided herein is an optically active alcohol having a silyl group, stannyl group, or halogen atom at the .gamma.-position, selected from compounds represented by the general formula [I], ##STR1## the general formula [II], ##STR2## the general formula [III], ##STR3## and the general formula [IV], ##STR4## (where, R denotes a C.sub.1 -C.sub.10 substituted or unsubstituted alkyl group or substituted or unsubstituted phenyl group; A denotes a silyl group represented by ##STR5## a stannyl group represented by ##STR6## or a halogen atom. R.sup.1, R.sup.2, and R.sup.3 are substituted or unsubstituted C.sub.1 -C.sub.10 alkyl groups or substituted or unsubstituted phenyl group, which may be the same or different, provided that this does not apply in the case where A represents a stannyl group or halogen atom in the general formulas [III] and [IV].); a process for producing the same, and a process for resolving the optically active alcohol into isomers of high optical purity.Type: GrantFiled: November 17, 1989Date of Patent: August 6, 1991Assignee: Nissan Chemical Industries, Ltd.Inventor: Fumie Sato
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Patent number: 5032662Abstract: Polyoxyalkylene-polysiloxane block copolymers are disclosed which exhibit an outstanding defoaming action and have the special advantage of not causing wetting defects when dispersions defoamed therewith are applied on a 2-dimensional substrate. Dispersions of polymeric organic substances, especially dispersions of vehicles, coating agents and adhesives are defoamed by the addition of 0.01 to 2.0% by weight, based on the dispersion to be defoamed, of a polyoxyalkylene-polysiloxane block copolymer of the formula,R.sup.1 O--A--[B--A--].sub.m R.sup.1whereinA is a polyoxyalkylene block with the average formula C.sub.n H.sub.2n O--)y, in which n has a value of 2.8 to 4.0 and y a value of 15 to 100,B is a polysiloxane block of the average formula, ##STR1## wherein the R.sup.2 groups are the same or different and represent an alkyl group with 1 to 4 carbon atoms or a phenyl group, with the proviso that at least 90% of the R.sup.2 groups are methyl groups and x has a value of 10 to 100,R.sup.Type: GrantFiled: February 10, 1989Date of Patent: July 16, 1991Assignee: Th. Goldschmidt AGInventors: Roland Berger, Hans-Ferdi Fink, Otto Klocker, Roland Sucker
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Patent number: 5026810Abstract: This invention reltes to vinyl ether siloxanes having the formula ##STR1## wherein Y is alkylene or phenylene optionally substituted with fluorine,R is alkylene or alkylene phenylene,R.sub.1 and R.sub.2 are lower alkyl,R.sub.3 is C.sub.1 to C.sub.20 alkyl,A is --CH.sub.2 --, ##STR2## W is ##STR3## with the proviso W is ##STR4## when p is one and at least one of W is ##STR5## when p is greater than one; Z is C.sub.2 to C.sub.3 alkylene,X is hydrogen or methyl,B is halo or lower alkyl,m has a value of from 1 to 10,n has a value of from 1 to 20,p has a value of from 0 to 10,r has a value of from 0 to 20,t has a value of from 1 to 100 andv has a value of from 0 to 4.The invention also relates to the process of preparing the present vinyl ether siloxanes and to their use as coating materials.Type: GrantFiled: August 9, 1990Date of Patent: June 25, 1991Assignee: GAF Chemicals CorporationInventor: Kou-Chang Liu
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Patent number: 5001248Abstract: The invention relates to silicone surfactants having the general formula:MD.sub.x D'.sub.y Mwherein M is a (CH.sub.3).sub.3 SiO.sub.0.5 -- group; D is a --(CH.sub.3).sub.2 SiO-- group; D is a --(CH.sub.3)(R.sup.2)SiO-- group, in which R.sup.2 is a non-linear hydrocarbyl group; x is 0 or an integer from 1 to 20 and y is an integer from 1 to 20. The silicone surfactants of the present invention are effective polyurethane foam stabilisers and are effective in amounts smaller than previously used commercially thereby leading to savings in costs.Type: GrantFiled: April 16, 1987Date of Patent: March 19, 1991Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Wojciech Grabowski
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Patent number: 4996343Abstract: Fast high resolution separations of biopolymers with retention of biological activity have been achieved by hydrophobic interaction chromatography using trialkoxy silyl ethers of the general formula(RO).sub.3 Si--(CH.sub.2).sub.m --O--(CH.sub.2 CH.sub.2 O).sub.n 13 (CH.sub.2).sub.p R'chemically bonded to silica-based chromatographic supports. In the formula R is alkyl of from one to five carbons, m is an integer from two to five, n is an integer from one to five, p is an integer from zero of ten, and R' is methyl, phenyl, or substituted phenyl. Stable and reproducible bonded phases are prepared in a novel solventless procedure by a bonding process which uses a defined and controlled amount of water on the silica surface and a gaseous or volatile basic catalyst such as ammonia to produce a controlled amount of silane polymerization and cross-linking in addition to extensive bonding between silane and silica.Type: GrantFiled: October 13, 1988Date of Patent: February 26, 1991Assignee: Northeastern UniversityInventors: Barry L. Karger, Binyamin Feibush, Neil T. Miller, Alvaro Figueroa
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Patent number: 4988504Abstract: Certain polysiloxane surface active agents containing radial organic polyether groups provide for improved stability of silicone emulsions, particularly antiperspirant stick compositions.Type: GrantFiled: August 19, 1987Date of Patent: January 29, 1991Assignee: General Electric CompanyInventors: Anthony A. Zotto, Raymond J. Thimineur, William J. Raleigh
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Patent number: 4985577Abstract: 3-(3,4-Dimethoxyphenyl)propyltrichlorosilane, which in a new material, was disclosed together with some ways to synthesize it. A usefulness thereof was illustrated by synthesizing polysilazane using the above new material and applying the polysilazane to a steel plate as a protective coat.Type: GrantFiled: June 27, 1989Date of Patent: January 15, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshio Shinohara, Yoshifumi Inoue
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Patent number: 4980427Abstract: Toughened heat-curable bismaleimide resin systems which contain alkenylphenoxy-terminated polysiloxane modifiers and compatibilizing agents. Cured resin systems exhibit increased toughness without a concomitant decrease in thermal stability at elevated temperatures.Type: GrantFiled: February 9, 1989Date of Patent: December 25, 1990Assignee: BASF AktiengesellschaftInventor: Hong-Son Ryang
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Patent number: 4977291Abstract: A process of producing a silanic or siloxanic compound containing at least one cycloalkyl ring by the hydrogenation of a corresponding compound containing at least one aromatic ring, in the presence of a Raney nickel catalyst having a granulometry comprised essentially between 10 and 150 micrometers and a surface area of at least 80 m.sup.2 /g.Type: GrantFiled: September 15, 1989Date of Patent: December 11, 1990Assignee: Istituto Guido Donegani S.p.A.Inventors: Francesco Gementi, Loris Sogli, Raffaele Ungarelli
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Patent number: 4965385Abstract: Organotrialkoxysilane stabilizers for inorganic silicate corrosion inhibitor additives in antifreezer/coolant formulations are described. The stabilizers have the following structure: ##STR1## wherein R is an alkyl group of 1-4 carbon atoms, R.sub.1 is either ##STR2## and R.sub.2 and R.sub.3 may be same or different and selected from --Ph, --CN, ##STR3## (wherein R is an alkyl group of 1-4 carbon atoms). These stabilizers help prevent the gelation of the corrosion inhibiting silicate additives in antifreezer/coolant formulations so that the silicates could be more persistent in their corrosion inhibiting properties.Type: GrantFiled: April 12, 1988Date of Patent: October 23, 1990Assignee: Korea Advanced Institute of Science and TechnologyInventors: Il Nam Jung, Sang Yo Hwang, Hae Kyung Bae
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Patent number: 4962218Abstract: Novel compositions of silicone/polyether block copolymers are provided which are useful as surfactants in several classes of polyurethane foam production. While conventional copolymers have a polysiloxane backbone with pendant polyethers, the surfactants of the present invention are the reverse with siloxane pendants on a polyether chain. These novel non-hydrolyzable polysiloxane polyoxyalkylene copolymers which are characterized by an "inverted" structure, i.e., polyoxyalkylene backbones with lateral and/or terminally pendant polysiloxanes, represent species that are of a narrow molecular weight and compositional distribution and are free of unreacted polyether or non-modified silicone oil diluent. These surfactants are useful in various urethane foam systems and can also display aqueous wetting properties.Type: GrantFiled: November 7, 1988Date of Patent: October 9, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Charles H. Blevins, George H. Greene, Paul L. Matlock, Gerald J. Murphy
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Patent number: 4956484Abstract: A process for producing a silane or siloxane compound containing at least one cycloalkyl ring by hydrogenation of a corresponding derivative containing at least one aromatic ring in the presence of a Raney nickel catalyst modified with chromium.Type: GrantFiled: March 3, 1988Date of Patent: September 11, 1990Assignee: Instituto Guido Donegani S.p.A.Inventors: Francesco Gementi, Loris Sogli, Raffaele Ungarelli
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Patent number: 4943648Abstract: Process for preparing a silyl ketene acetal adduct, the process comprising contacting and reacting a silyl ketene acetal and an .alpha.,.beta.-unsaturated compound in the presence of a mercury- or Lewis acid-containing catalyst, for example, HgI.sub.2.Type: GrantFiled: April 1, 1988Date of Patent: July 24, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Ira B. Dicker
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Patent number: 4927950Abstract: A fluorine-containing silane compound of the formula: ##STR1## wherein R.sub.f is a fluorine-containing C.sub.4 --C.sub.18 aliphatic group, R.sup.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl group, A is a straight or branched C.sub.1 -C.sub.12 alkylene group or a group of the formula: ##STR2## in which R.sup.2 is hydrogen or a C.sub.1 -C.sub.3 acyl group, R.sup.3 is a C.sub.1 -C.sub.6 acyl group, A' is a C.sub.2 -C.sub.8 alkylene group, A" is a C.sub.1 -C.sub.4 alkylene group, and Q is --CO-- or --SO.sub.2 --, B is a group of the formula: ##STR3## in which R.sup.4 and R.sup.5 are each a straight or branched C.sub.2 or C.sub.3 alkylene group, and p is 2 or 3, X is chlorine or a C.sub.1 -C.sub.3 alkoxy group, X' is chlorine or a C.sub.1 -C.sub.3 alkyl or alkoxy group, a phenyl group or a glycidyl group, m is 0 or 1, and n is an integer of 0 to 40, which modifies surface characteristics of a solid substrate.Type: GrantFiled: March 8, 1985Date of Patent: May 22, 1990Assignee: Daikin Industries, Ltd.Inventors: Iwao Hisamoto, Masaru Hirai, Sueyoshi Ishikawa
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Patent number: 4921976Abstract: A silicon compound represented by formula (I): ##STR1## wherein either one of R.sup.1 and R.sup.2 represents a vinyl group with the other representing a hydrogen atom; either one of R.sup.3 and R.sup.4 represents a vinyl group with the other representing a hydrogen atom; and R.sup.5, R.sup.6, and R.sup.7, which may be the same or different, each represents a substituted or unsubstituted monovalent hydrocarbon group, an alkoxy group or a halogen atom. The compound exhibits improved compatibility with polymerizable monomers or organic polymers and is useful as a crosslinking agent or modifier.Type: GrantFiled: November 16, 1988Date of Patent: May 1, 1990Assignee: Toshiba Silicone Co., Ltd.Inventor: Keiji Kabeta
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Patent number: 4900520Abstract: A process for the neutralization, clarification and decolorization of organosilanes or organosilicones derived from the reaction of an organosilane or a hydropolysiloxane with an aliphatically unsaturated compound in the presence of an acidic platinum catalyst, a process for the conversion of a soluble platinum catalyst into an insoluble form and a process for the recovery of a platinum catalyst from an insoluble anion exchange resin which comprises:(a) contacting a reaction mixture of the organosilane or organosilicone with a basic anionic exchange resin having a free amino or quaternized ammonium salt functionality in an insoluble polymeric matrix under conditions suitable to bind the soluble platinum catalyst to said resin;(b) separating said resin containing bound platinum catalyst from the organosilane or organosilicone reaction mixture and, optionally,(c) treating the separated resin with an inorganic base to convert the bound platinum catalyst to a recoverable salt or(d) subjecting the resin containingType: GrantFiled: October 31, 1988Date of Patent: February 13, 1990Assignee: GAF Chemicals CorporationInventors: Basil A. Behnam, Rastko Vukov
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Patent number: 4900474Abstract: An antifoamer which comprises a polyperfluoroether group-containing organopolysiloxane comprising from 20 to 100 mole % of the polyperfluoroether group-containing organopolysiloxane units of a specific type is described. The content of fluorine atoms in the polyperfluoroether group-containing organopolysiloxane is in the range of from 20 to 70 wt % by which foams of organic solvent systems can be inhibited to a substantial extent.Type: GrantFiled: July 15, 1988Date of Patent: February 13, 1990Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Nobuyuki Terae, Teiichi Mutoh, Akira Yoshida