EP0114724A2
Expired / Lapsed
EP
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Polymer composition
Assignee: Imperial Chemical Industries Ltd
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Filing: 1984-01-06
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Granted: —
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Expires: 2004-01-06
Abstract
Abstract A ploymer composition comprises an olefin polymer or copolymer, for example an ethylene-vinyl acetate copolymer, and a filler, where the filler is from 30% up to 90% by weight of the polymer + filler, together with a mixture of a) a metal salt of a carboxylic acid, for example zinc stearate, and b) an organic ester, an organic phosphate or a plant oil which can be a soya bean oil, especially an epoxidised soya bean oil. The filler can be one or more flame retardant and/or smoke suppresant materials to give a flame retardant composition or can be a filler capable of giving sound- deadening characteristics, for example barium sulphate. The composition has good processability.
Inventors
- 👤 Gordon William Gilby
- 👤 Philip John Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 13:57
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K13/00; C08K13/02; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L23/00; C08L23/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
A polymer composition comprising an olefin polymer, a filler material and a processing aid wherein the composition contains from 30 up to 90% by weight of the filler material, based on the total weight of the polymer composition, and from 2 up to 8% by weight of the processing aid, based on the total weight of the polymer composition, where the processing aid is a mixture of a) 20 up to 80% by weight of a metal salt of a carboxylic acid containing at least 6 carbon atoms and correspondingly b) 80% to 20% by weight of either an organic ester which is derived from a carboxylic acid containing at least 6 carbon atoms; an organic phosphate; or a plant oil.
Claim 2
Dependent Claim
121 words
A polymer composition comprising an olefin polymer, a filler material and a processing aid wherein the composition contains from 30 up to 90% by weight of the filler material, based on the total weight of the polymer composition, and from 2 up to 8% by weight of the processing aid, based on the total weight of the polymer composition, where the processing aid is a mixture of a) 20 up to 80% by weight of a metal salt of a carboxylic acid containing at least 6 carbon atoms and correspondingly b) 80% to 20% by weight of either an organic ester which is derived from a carboxylic acid containing at least 6 carbon atoms; an organic phosphate; or a plant oil.
Claim 3
Dependent Claim
30 words
A composition as claimed in claim 1 wherein the olefin polymer is polyethylene or a copolymer of ethylene with an unsaturated carboxylic acid or an ester of such an acid.
Claim 4
Dependent Claim
22 words
A composition as claimed in either claim 1 or claim 2 wherein the olefin polymer component is a mixture of olefin polymers.
Claim 5
Dependent Claim
45 words
A composition as claimed in any one of claims 1 to 3 wherein the filler material is at least one of magnesium hydroxide, aluminium hydroxide, calcium carbonate, silica, alumina. magnesia, calcium oxide, antimony trioxide, glass fibre, iron oxide, barium sulphate, talc, mica or powdered slate.
Claim 6
Dependent Claim
48 words
A composition as claimed in any one of claims 1 to 4 wherein the filler material is one or more compounds which provide fire retardant and/or smoke suppresant characteristics to the polymer composition and contains less than 10% by weight of the total composition of a halogen-containing compound.
Claim 7
Dependent Claim
61 words
A composition as claimed in any one of claims 1 to 5 wherein the processing aid is a mixture of a) 40 up to 60% by weight of a metal salt of a carboxylic acid containing at least 6 carbon atoms and correspondingly b) 60 to 40% by weight of either the organic ester, the organic phosphate or the plant oil.
Claim 8
Dependent Claim
43 words
A composition as claimed in any one of claims 1 to 6 wherein the salt of a carboxylic acid is a salt of a metal of Group IA or Group IIA of the Periodic Table with dodecanoic acid, hexadecanoic acid or octadecanoic acid.
Claim 9
Dependent Claim
27 words
A composition as claimed in any one of claims 1 to 8 wherein the processing aid contains a plant oil which is an epoxidised soya bean oil.
Claim 10
Dependent Claim
76 words
A composition as claimed in any one of claims 1 to 8 which comprises a copolymer of ethylene with 15 to 35% by weight of vinyl acetate; 30 to 90% by weight bf the total composition of a filler material; and 2 to 8% by weight of a processing aid which is a mixture of 20 to 80% by weight of zinc octadecanoate and correspondingly 80 to 20% by weight of an epoxidised soya bean oil.
Claim 11
Dependent Claim
27 words
A composition as claimed in any one of claims 1 to 9 which includes a free-radical generator which is capable of causing cross-linking of the olefin polymer.
Claim 12
Dependent Claim
75 words
An electric wire or cable wherein the insulator and/or the outer sheath is formed from a composition as claimed in claim 5 wherein the olefin polymer is polyethylene or a copolymer of ethylene and vinyl acetate and the composition contains from 25 up to 60% by weight, based on the polymer composition, of magnesium hydroxide or aluminium hydroxide, and from 0 up to 25% by weight, based on the polymer composition, of precipitated calcium carbonate.
Claim 13
Dependent Claim
30 words
A process for the production of a polymer composition wherein the components as claimed in any one of claims 1 to 10 are blended together using a melt mixing technique.
References Cited (Backward Citations)
No citation records indexed.
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