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4762895 |
Process for the preparation of preceramic metallopolysilanes and the polymers therefrom
A process for the preparation of preceramic metallopolysilanes is described. The process consists of contacting and reacting organohalogendisilanes with metal-containing compounds in the presence...
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4761464 |
Interrupted polysilanes useful as photoresists
Polysilane polymers in which the Si backbone is interrupted by atoms such as O, Ge, Sn, P, etc., are useful photoresists especially in the solvent development mode.
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4761458 |
Preceramic polycarbosilane derivatives
Halogenated polycarbosilanes are prepared by reacting a polycarbosilane containing at least 0.1 weight percent Si-H groups with a halogenating reagent selected from the group consisting of...
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4758646 |
Curable hydrophilic silicone polyether polymer
A bis (alkoxysilyl) polyether is produced and utilized as a fabric sizing agent.
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4753827 |
Abrasion-resistant organosiloxane/metal oxide coating
An organoalkoxysilane/metal oxide sol-gel composition and method for its production are disclosed whereby an organoalkoxysilane of the general formula R x Si(OR') 4 -x wherein R is an organic...
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4754012 |
Multi-component sol-gel protective coating composition
A multi-component organoalkoxysilane/metal alkoxide sol-gel composition and method for its production are disclosed whereby an organoalkoxysilane of the general formula R x Si(OR') 4 -x wherein...
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4747987 |
Process for the production of filler-containing acrylic and modacrylic fibers
Silica-containing acrylic and modacrylic fibres are obtained without spinning defects in that an aqueous silica sol is reacted with a silane and with a polar organic solvent, the sequence in which...
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4746725 |
Cyclic polycarbonate-polyepoxide reaction product and method for their preparation
Resinous compositions are prepared by the reaction of a composition comprising cyclic polycarbonate oligomers with at least one polyepoxide compound, in the presence of a polycarbonate formation...
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4745169 |
Alkali-soluble siloxane polymer, silmethylene polymer, and polyorganosilsesquioxane polymer
There are provided an alkali-soluble siloxane polymer, an alkali-soluble silmethylene polymer, and an alkali-soluble polyorganosilsesquioxane polymer. They are useful as a photoresist for the...
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4743411 |
Process for producing shaped silicon carbide article from a polycarbosilastyrene copolymer
A polycarbosilastyrene copolymer which comprises recurring carbosilane units of the formula I: ##STR1## and recurring silastyrene units of the formula II: ##STR2## is useful for producing a shaped...
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4734481 |
Novel organometallic polymers
Homopolymers or copolymers of organometallic, end-capped polyphthalaldehydes containing the repeating unit of formula I ##STR1## wherein R 1 , R 2 , R 3 and R 4 are each independently of the...
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4732949 |
Polydiorganosiloxane/polycarbonate block copolymers
The present invention relates to the preparation of thermoplastic poly-(diorganosiloxane)/polycarbonate block copolymers containing monoalkylphenyl or dialkylphenyl end groups by the phase boundary...
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4730026 |
Cross-linked organosilazane polymers
Cross-linked organosilazane polymers which are useful as ceramic precursors and film casting are disclosed.
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4726969 |
Thermosetting polyisiloxanic composition for protective coatings and process for coating polycarbonate sheets
A thermosetting organosiloxanic composition for protective coatings consists of a solvent and of the reaction product of four components, each one selected from one of following classes: (a)...
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4719121 |
Method of making a magnetic recording medium and composition
An improved dispersant composition for magnetic media, comprising the reaction product of a phosphate ester and a silicon compound, is described. The silicon compound may be selected from...
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4713196 |
Polymer compositions exhibiting liquid-crystalline phases
Polymer compositions exhibiting liquid-crystalline phases contain chemically bonded mesogenic groups of the formula Ia and/or Ib: ##STR1## in which Q 1 is H, alkyl or alkoxy having 1-5 C atoms, F,...
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4704444 |
Polyhydridosilanes and their conversion to pyropolymers
A polyhydridosilane has a catenated silicon backbone of 9 to 4000 silicon atoms with an average number of hydrogen atoms per silicon atom in the range of 0.3 to 2.2, at least 0.1 gram of the...
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4695604 |
Electron beam curable polyuethane polymers for magnetic tape applications
Electron beam curable polyurethane resin comprising the reaction product of a hydroxyl terminated polyester; a compound having ethylenic unsaturation and at least 2 hydroxyl moieties; optionally, a...
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4694060 |
Process for the treatment of polyorganosilazanes and/or of polyorgano(disilyl)silazanes by means of a treatment of polyorganosilazanes with a catalyst system comprising an ionic inorganic salt and a complexing compound
A process for the treatment of polyorganosilazanes and/or polyorgano(disilyl)silazanes with an effective quantity of a catalyst system comprising (i) an ionic inorganic salt of the formula M 30 A...
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4692474 |
Method for preparing plastic foams
Plastic foams are prepared by reacting a compound containing Si-bonded hydrogen and at least one SiC-bonded radical having a basic nitrogen atom in the same molecule with a hydroxyl-containing...
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4692537 |
Organosilicon compounds
There are prepared silafluoroolefins and silafluoroolefin ethers and polymers thereof by reacting carbon with silicon tetrafluoroide and a source of hydrogen followed by polymerization. The...
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4689383 |
Hydroxyl-functional disiloxanes and polysiloxane oligomers
Hydroxyl-functional disiloxanes and hydroxyl-functional polysiloxane oligomers are provided which contain hydroxyl groups bound to the silicon via Si--C bonds. These compounds may be crosslinked to...
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4683271 |
Silicone-ester powder coating compositions
New siloxane-esters, useful as powder coating resins, are prepared by random condensation polymerization of a hindered glycol and a hydroxy functional silicone having about two ##STR1## groups per...
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4680365 |
Method for preparing acetoxysiloxanes and organo(poly)siloxanes having halogen bonded to silicon
Organo(poly)siloxanes having halogen bonded directly to silicon, or acetoxysiloxanes are prepared by reacting organo(poly)siloxanes having hydrogen bonded directly to silicon, with an allyl...
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4677169 |
Silicone-organic block polymers and method for making
A method is provided for making silicone-organic block polymers, such as polydimethylsiloxane-polystyrene block polymers resulting from the thermal generation of free-radicals in the presence of...
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4661551 |
Transparent aqueous organopolysiloxane compositions
Transparent aqueous organopolysiloxane compositions comprising (A) a salt of a water-soluble organic or inorganic acid and a polysiloxane, which contains in addition to the other siloxane units...
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4657989 |
Method for preparing siloxane-carbonate block copolymers
Siloxane-carbonate block copolymers are prepared by reacting (A) at least one siloxane compound with (B) at least one polycarbonate compound, one of reagents A and B being anionic and the other...
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4652497 |
Organosiloxane compositions for abrasion resistant and adhesion promoting protective coatings
This invention relates to organosiloxane compositions which have application as protective coatings for soft substrates. The compositions of the invention include a substituent selected from each...
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4650837 |
Method for converting Si-H containing polycarbosilanes to new and useful preceramic polymers and ceramic materials
A method of forming preceramic polymers using a polycarbosilane having repeat units of the formula [RSi(H)--(CH 2 ) q ] (where R is H, a lower alkyl group having from 1 to about 6 carbon atoms, a...
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4650835 |
Silicon compounds containing SiC-bonded biuret groups and a method for preparing the same
Organosilicon compounds containing SiC-bonded biuret groups are prepared by (I) adding a silane containing 1 or 2 silicon atoms per molecule and an SiC-bonded organic radical having at least one...
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4647644 |
Phenylenesulfonate group-containing organopolysiloxanes, method for their preparation and use thereof
Phenylenesulfonate group-containing organopolysiloxanes are disclosed consisting of units represented by the formula: ##STR1## in which R 1 represents --CH 2 --CH 2 -- or CH 3 --CH<, x is...
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4647642 |
Process for the preparation of polyphenol derivatives and dermatives obtained thereby
The present invention relates to a process for the preparation of polyphenol derivatives, new derivatives obtained by this process and their use in the preparation of polymers and copolymers. This...
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4643839 |
Silicone reaction products and glycol compositions containing the products
The reaction product of phosphorous acid, formaldehyde, and monomeric or polymeric alkoxysilanes having one or more aminoalkylene groups are useful as gelation inhibitors for aqueous glycol solutions.
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4640968 |
Ethylidene norbornyl group-containing polysiloxane
A polysiloxane containing an ethylidene norbornyl group possesses a terminal group represented by the formula: ##STR1## wherein R 1 stands for a monovalent hydrocarbon group, a hydroxyl group, an...
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4626583 |
Polysilane-siloxane oligomers and copolymers and methods of making the same
Linear polysilane-siloxane copolymers having remarkable sensitivity to radiation have the general formula [(SiMe 2 ) m ] a [(OSiMeR) n ] b wherein Me is a methyl group, R is lower alkyl or...
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4624998 |
Silicone-modified epoxy resins having improved impact resistance
This invention relates to a dispersion of a functional silicone modifier in a curable epoxy resin wherein emulsification of said silicone is aided by a siloxane-polyoxyalkylene copolymer. The...
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4624909 |
Silicon-containing novolak resin and resist material and pattern forming method using same
Disclosed is a novel novolak resin comprising structural units having a trimethylsilyl group. A resist material highly resistive to dry etching is obtained by adding a photosensitive diazo compound...
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4623694 |
Curable organosiloxane compositions containing an emulsified epoxide compound and elastomeric materials prepared therefrom
This invention relates to oil-in-oil emulsions wherein the continuous phase comprises at least one carboxyalkyl terminated polydiorganosiloxane and the dispersed phase comprises at least one...
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4618665 |
Process to prepare 2-phenylpropyl containing polydiorganosiloxanes
A method of preparing a copolymer of methyl(2-phenylpropyl)siloxy units and dialkylsiloxy units is disclosed. The method hydrolyzes methyl(2-phenylpropyl)dichlorosilane to yield a reaction product...
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4617238 |
Vinyloxy-functional organopolysiloxane compositions
Photo-curable vinyloxy-functional organosiloxane polymers are provided. Also provided are release coating compositions made by combining said polymers with various photo-initiators. The polymers...
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4609569 |
Method of preparing modified polysiloxane containing polymers
A method of modifying the properties of siloxane-containing polymers is provided which comprises heating said siloxane-containing polymer in the presence of an organic alcohol, a phenol or a thiol...
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4608270 |
Acylamino silicon compounds, their use and preparation
Organosilicon compounds containing at least one acylamino-substituted hydrocarbon radical are prepared by reacting an organosilicon compound containing at least one amino-substituted hydrocarbon...
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4608421 |
Silicone-polyester powder coating compositions
New siloxane-polyesters, siloxane-ethers and siloxane-ether-polyesters, useful as powder coating resins, are prepared by reacting rigid diacids, neopentyl glycol, trimellitic anhydride with up to...
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4604444 |
Curable organopolysiloxane compositions comprising microencapsulated hardening accelerators
Organopolysiloxane compositions readily cross-linked into elastomers, e.g., elastomeric seals, and advantageously formulated in either one- or two-component packages, are comprised of (A) a...
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4602050 |
Method for cross-linking organopolysilane polymers
A method for cross-linking organopolysilane polymers. The method includes the steps of mixing an organopolysilane with a cross-linking agent to make a reaction mixture. The cross-linking agent...
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4595472 |
Silicon carbide preceramic vinyl-containing polymers
Vinyl-containing polysilanes of the average formula [R 2 Si][RSi][R d '(CH 2 CH)Si] where R is an alkyl radical containing 1 to 4 carbon atoms, R' is an alkyl radical containing 1 to 4...
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4588801 |
Polysilane positive photoresist materials and methods for their use
New polysilane copolymers comprise recurring units of --Si(X)(Y)-- and Si(A)(B)--, Si(X)(Y) being different from Si(A)(B), wherein X and Y together have 1-13 carbon atoms, and X and Y each...
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4587205 |
Method of using polysilane positive photoresist materials
New polysilane copolymers comprise recurring units of --Si(X)(Y)-- and Si(A)(B)--, Si(X)(Y) being different from Si(A)(B), wherein X and Y together have 1-13 carbon atoms, and X and Y each...
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4584360 |
Process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups
The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy...
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4578116 |
Organosilicon compounds and textile fiber finishes containing these
Compounds of the formula ##STR1## whereby, in the average molecule, 20 to 100% of the R 1 radicals are ##STR2## in which R 2 is an alkylphenyl, dialkylphenyl or trialkylphenyl radical and the sum...
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