US4548979A
Expired / Lapsed
US
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Flame-resistant molding compositions containing oxides or hydroxides of rare earth elements
Assignee: Wacker Chemie AG
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Filing: 1982-12-27
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Granted: 1985-10-22
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Expires: 2002-12-27
Abstract
Abstract Flame-resistant molding compositions are prepared by adding at least one substance selected from the class consisting of (a) oxides or hydroxides of the rare earth metals, (b) graphite, or (c) precious metals or their compounds or complexes and mixtures of (a), (b) or (c) to a composition containing mixtures of organic polymers other than diorganopolysiloxanes and diorganopolysiloxanes. Although it is not essential, silicon dioxide having a surface area of at least 50 m 2 /g and crosslinking agents may be incorporated in these molding compositions.
Inventors
- 👤 Carlos Weise
- 👤 Dietrich Wolfer
- 👤 Jorg Patzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:03
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08K; C08K3/00; C08L101/00; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/20; C08G77/22; C08G77/24; C08G77/42; C08G77/442; C08G77/448; C08G77/452; C08G77/455; C08G77/458; C08G77/70
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
138 words
A flame-resistant molding composition consisting essentially of ( 1) a diorganopolysiloxane which is free of hydrogen and contains at least 90 percent by weight of diorganopolysiloxane units, (2) an organic polymer selected from the group consisting of polymers of ethylene, propylene, isobutylene, methylbutene-1, butene-1, methylpentene-1, isoprene, butadiene, styrene, hexadiene, dicyclopentadiene, ethylidene norbornene, vinyl chloride, vinylidene chloride, chloroprene, acrylic acid, methacrylic acid, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, vinyl laurate, vinyl alcohols, saponification products of copolymers of ethylene and vinyl acetate, polyvinyl acetals, chlorosulfonated polyethylenes, polyamides, polyimides, polycarbonates, polyurethanes, polyacetals, polyethers, polysulfones, polyesters, polyepichlorohydrins, polycarbodiimides and graft or block copolymers of diorganopolysiloxanes obtained from the polymerization of a diorganopolysiloxane and at least one organic compound having at least one aliphatic carbon-carbon double bond and (3) oxides or hydroxides of the rare earth elements.
Claim 2
Dependent Claim
138 words
A flame-resistant molding composition consisting essentially of ( 1) a diorganopolysiloxane which is free of hydrogen and contains at least 90 percent by weight of diorganopolysiloxane units, (2) an organic polymer selected from the group consisting of polymers of ethylene, propylene, isobutylene, methylbutene-1, butene-1, methylpentene-1, isoprene, butadiene, styrene, hexadiene, dicyclopentadiene, ethylidene norbornene, vinyl chloride, vinylidene chloride, chloroprene, acrylic acid, methacrylic acid, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, vinyl laurate, vinyl alcohols, saponification products of copolymers of ethylene and vinyl acetate, polyvinyl acetals, chlorosulfonated polyethylenes, polyamides, polyimides, polycarbonates, polyurethanes, polyacetals, polyethers, polysulfones, polyesters, polyepichlorohydrins, polycarbodiimides and graft or block copolymers of diorganopolysiloxanes obtained from the polymerization of a diorganopolysiloxane and at least one organic compound having at least one aliphatic carbon-carbon double bond and (3) oxides or hydroxides of the rare earth elements.
Claim 3
Dependent Claim
22 words
The composition of claim 1, wherein the composition contains silicon dioxide having a surface area of at least 50 m 2 /g.
Claim 4
Dependent Claim
38 words
The composition of claims 1 or 2, wherein the oxides or hydroxides of the rare earth elements are present in an amount of from 0.01 to 20 percent by weight, based on the weight of the organic polymer.
Claim 5
Dependent Claim
38 words
The composition of claims 1 or 2, wherein the oxides or hydroxides of the rare earth elements are present in an amount of from 0.1 to 5 percent by weight, based on the weight of the organic polymer.
Claim 6
Dependent Claim
30 words
The composition of claim 1, wherein the organic polymer is a terpolymer of ethylene, propylene and a diene selected from the group consisting of butadiene, hexadiene, dicylopentadiene and ethylidene norbornene.
Claim 7
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of ethylene and butene-1.
Claim 8
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of isobutylene and isoprene.
Claim 9
Dependent Claim
19 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of ethylene and vinyl acetate.
Claim 10
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of butadiene and acrylonitrile.
Claim 11
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of styrene and butadiene.
Claim 12
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of styrene and acrylonitrile.
Claim 13
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of styrene and methacrylate.
Claim 14
Dependent Claim
19 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of acrylonitrile, styrene and butadiene.
Claim 15
Dependent Claim
18 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of ethylene and methacrylate.
Claim 16
Dependent Claim
20 words
The composition of claim 1, wherein the organic polymer is obtained from the polymerization of vinyl chloride and vinyl acetate.
Claim 17
Dependent Claim
154 words
A flame-resistant molding composition consisting essentially of (1) a diorganopolysiloxane which is free of hydrogen and contains at least 90 percent by weight of diorganopolysiloxane units, (2) an organic polymer selected from the group consisting of polymers of ethylene, propylene, isobutylene, methylbutene-1, butene-1, methylpentene-1, isoprene, butadiene, styrene, hexadiene, dicyclopentadiene, ethylidene norbornene, vinyl chloride, vinylidene chloride, chloroprene, acrylic acid, methacrylic acid, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, vinyl laurate, vinyl alcohols, saponification products of copolymers of ethylene and vinyl acetate, polyvinyl acetals, chlorosulfonated polyethylenes, polyamides, polyimides, polycarbonates, polyurethanes, polyacetals, polyethers, polysulfones, polyesters, polyepichlorohydrins, polycarbodiimides and graft or block copolymers of diorganopolysiloxanes obtained from the polymerization of a diorganosiloxane and at least one organic compound having at least one aliphatic carbon-carbon double bond, (3) oxides or hydroxides of the rare earth elements and (4) a crosslinking agent selected from the group consisting of organic peroxides, percarbonates, sulfur and sulfur compounds.
Claim 18
Dependent Claim
154 words
A flame-resistant molding composition consisting essentially of (1) a diorganopolysiloxane which is free of hydrogen and contains at least 90 percent by weight of diorganopolysiloxane units, (2) an organic polymer selected from the group consisting of polymers of ethylene, propylene, isobutylene, methylbutene-1, butene-1, methylpentene-1, isoprene, butadiene, styrene, hexadiene, dicyclopentadiene, ethylidene norbornene, vinyl chloride, vinylidene chloride, chloroprene, acrylic acid, methacrylic acid, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, vinyl laurate, vinyl alcohols, saponification products of copolymers of ethylene and vinyl acetate, polyvinyl acetals, chlorosulfonated polyethylenes, polyamides, polyimides, polycarbonates, polyurethanes, polyacetals, polyethers, polysulfones, polyesters, polyepichlorohydrins, polycarbodiimides and graft or block copolymers of diorganopolysiloxanes obtained from the polymerization of a diorganosiloxane and at least one organic compound having at least one aliphatic carbon-carbon double bond, (3) oxides or hydroxides of the rare earth elements and (4) a crosslinking agent selected from the group consisting of organic peroxides, percarbonates, sulfur and sulfur compounds.
Claim 19
Dependent Claim
22 words
The composition of claim 16, wherein the composition contains silicon dioxide having a surface area of at least 50 m 2 /g.
Claim 20
Dependent Claim
36 words
The composition of claim 16, wherein the oxides or hydroxides of the rare earth elements are present in an amount of from 0.01 to 20 percent by weight, based on the weight of the organic polymer.
Claim 21
Dependent Claim
36 words
The composition of claim 16, wherein the oxides or hydroxides of the rare earth elements are present in an amount of from 0.1 to 5 percent by weight, based on the weight of the organic polymer.
References Cited (Backward Citations)
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