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US4397981A
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Ethylene polymer compositions that are flame retardant
Assignee: Mitsubishi Chemical Corp
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Filing: 1980-12-17
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Granted: 1983-08-09
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Expires: 2000-12-17
Abstract
Abstract A novel flame-retardant ethylene polymer composition comprising a copolymer consisting essentially of ethylene and an olefinically unsaturated silane compound such as vinyltriethoxysilane, a silanol condensation catalyst such as dibutyltin dilaurate, and a flame retardant such as a chlorinated polyethylene.
Inventors
- 👤 Shuhei Doi
- 👤 Tsutomu Isaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2962
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
An ethylene polymer composition which comprises: (a) 100 parts by weight of a copolymer comprising, as predominant monomeric units ethylene and about 0.01 to 5% by weight based on the weight of the copolymer of an olefinically unsaturated silane compound represented by the formula, RSiR.sub.n 'Y.sub.3-n wherein: R is an ethylenically unsaturated hydrocarbyl or hydrocarbyloxy group; R' is an aliphatic saturated hydrocarbyl group; Y is a hydrolyzable organic group; and n is 0, 1 or 2, said copolymer being obtained by radical copolymerization of said monomeric ethylene and said silane compound in the presence of a radical initiator under elevated pressure, (b) 0.001 to 10 parts by weight of a silanol condensation catalyst, and (c) 10 to 150 parts by weight of a flame retardant which is an organic halogen compound wherein the halogen is chlorine, bromine or iodine.
Claim 2
Dependent Claim
139 words
An ethylene polymer composition which comprises: (a) 100 parts by weight of a copolymer comprising, as predominant monomeric units ethylene and about 0.01 to 5% by weight based on the weight of the copolymer of an olefinically unsaturated silane compound represented by the formula, RSiR.sub.n 'Y.sub.3-n wherein: R is an ethylenically unsaturated hydrocarbyl or hydrocarbyloxy group; R' is an aliphatic saturated hydrocarbyl group; Y is a hydrolyzable organic group; and n is 0, 1 or 2, said copolymer being obtained by radical copolymerization of said monomeric ethylene and said silane compound in the presence of a radical initiator under elevated pressure, (b) 0.001 to 10 parts by weight of a silanol condensation catalyst, and (c) 10 to 150 parts by weight of a flame retardant which is an organic halogen compound wherein the halogen is chlorine, bromine or iodine.
Claim 3
Dependent Claim
40 words
The composition as claimed in claim 1 in which the ethylenically unsaturated silane compound is selected from the group consisting of: CH.sub.2 ═CHSi(OA).sub.3 and CH.sub.2 ═C(CH.sub.3)COOC.sub.3 H.sub.6 Si(OA).sub.3 wherein A is a hydrocarbyl group having 1 to 8 carbon atoms.
Claim 4
Dependent Claim
19 words
The composition as claimed in claim 1 in which the silanol condensation catalyst is a metal or alkylmetal carboxylate.
Claim 5
Dependent Claim
32 words
The composition as claimed in claim 1 in which said ethylenically unsaturated silane compound is CH 2 ═CHSi(OA) 3 , wherein A is a hydrocarbyl group having 1 to 8 carbon atoms.
Claim 6
Dependent Claim
38 words
The composition as claimed in claim 1 in which said ethylenically unsaturated silane compound is CH 2 ═C(CH 3 )COOC 3 H 6 Si(OA) 3 , wherein A is a hydrocarbyl group having 1 to 8 carbon atoms.
Claim 7
Dependent Claim
15 words
The cross-linked flame-retardant composition obtained by contacting the composition defined in claim 1 with water.
Claim 8
Independent Claim
166 words
A method for producing a flame-retardant ethylene polymer composition comprising copolymerizing ethylene with an unsaturated silane monomer of the formula RSiR.sub.n 'Y.sub.3-n wherein: R is an ethylenically unsaturated hydrocarbyl or hydrocarbyloxy group; R' is an aliphatic saturated hydrocarbyl group; Y is a hydrolyzable organic group; and n is 0, 1 or 2 at a pressure of about 500 to 4,000 kg./cm., at temperature of about 100° to 400° C., in the presence of a radical polymerization initiator and in proportions such that the resultant polymer contains about 0.01 to 5% by weight of said silane monomer; adding to 100 parts by weight of the resultant copolymer 0.001 to 10 parts by weight of a silanol condensation catalyst and 10 to 150 parts by weight of a flame-retardant which is an organic halogen compound wherein the halogen is chlorine, bromine or iodine; molding the copolymer composition and exposing the copolymer composition to water to effect a crosslinking reaction during or after the molding of said copolymer composition.
Claim 9
Independent Claim
166 words
A method for producing a flame-retardant ethylene polymer composition comprising copolymerizing ethylene with an unsaturated silane monomer of the formula RSiR.sub.n 'Y.sub.3-n wherein: R is an ethylenically unsaturated hydrocarbyl or hydrocarbyloxy group; R' is an aliphatic saturated hydrocarbyl group; Y is a hydrolyzable organic group; and n is 0, 1 or 2 at a pressure of about 500 to 4,000 kg./cm., at temperature of about 100° to 400° C., in the presence of a radical polymerization initiator and in proportions such that the resultant polymer contains about 0.01 to 5% by weight of said silane monomer; adding to 100 parts by weight of the resultant copolymer 0.001 to 10 parts by weight of a silanol condensation catalyst and 10 to 150 parts by weight of a flame-retardant which is an organic halogen compound wherein the halogen is chlorine, bromine or iodine; molding the copolymer composition and exposing the copolymer composition to water to effect a crosslinking reaction during or after the molding of said copolymer composition.
Claim 10
Dependent Claim
39 words
The process claimed in claim 7 in which the ethylenically unsaturated silane compound is selected from the group consisting of: CH.sub.2 ═CHSi(OA).sub.3 and CH.sub.2 ═C(CH.sub.3)COOC.sub.3 H.sub.6 Si(OA).sub.3 wherein A is a hydrocarbyl group having 1 to 8 carbon atoms.
Claim 11
Dependent Claim
19 words
The process as claimed in claim 7 in which the silanol condensation catalyst is a metal or alkylmetal carboxylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |