US4397981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymer compositions that are flame retardant
Assignee: Mitsubishi Chemical Corp
•
Filing: 1980-12-17
•
Granted: 1983-08-09
•
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 15:01
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.
References Cited (Backward Citations)
US3225018A
Cited
US3423376A
Cited
US3646155A
Cited
US3832326A
Cited
US4117195A
Cited
US4117195B1
Cited
US4209566A
Cited
US4291136A
Cited
US4297310A
Cited
US4297310B1
Cited
US4289687A
Cited
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 |