US5002996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant olefinic resin composition
Assignee: Sumitomo Bakelite Co Ltd
•
Filing: 1989-03-06
•
Granted: 1991-03-26
•
Expires: 2009-03-06
Abstract
Abstract A flame-retardant olefinic resin composition comprising (a) at least one ethylene copolymer selected from the group consisting of ethylene- alpha -olefin copolymers, ethylene-ethyl acrylate copolymer and ethylene-methyl methacrylate copolymer, (b) a silane-grafted polymer obtained by grafting a silane to an olefinic resin, (c) a maleic acid or maleic anhydride derivative of a polyethylene, an ethylene-vinyl acetate copolymer or an ethylene- alpha -olefin copolymer, (d) (i) an ethylene-ethyl acrylate-maleic anhydride copolymer or an ethylene-methyl methacrylate-maleic anhydride copolymer, or (d) (ii) a silicone-modified polymer obtained by graft-polymerizing a reactive polyorganosiloxane to a thermoplastic resin, or (d) (iii) a mixture of (d) (i) and (d) (ii).
Inventors
- 👤 Nobuaki Okuda
- 👤 Yasuo Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08F; C08F255/00; C08F255/02; C08F255/026; C08L23/0807; C08L23/0815; C08L23/0846; C08L23/0869; C08L51/00; C08L51/06; C08L2201/00; C08L2201/02; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/035
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A flame-retardant olefinic resin composition comprising (a) at least one ethylene copolymer selected from the group consisting of ethylene-α-olefin copolymers, ethylene-ethyl acrylate copolymer and ethylene-methyl methacrylate copolymer, (b) a silane-grafted polymer obtained by grafting a silane to an olefinic resin, (c) a maleic acid or maleic anhydride derivative of a polyethylene, an ethylene-vinyl acetate copolymer or an ethylene-α-olefin copolymer, (d)(i) an ethylene-ethyl acrylate-maleic anhydride copolymer or an ethylene-methyl methacrylatemaleic anhydride copolymer, or (d)(ii) a siliconemodified polymer obtained by graft-polymerizing a reactive polyorganosiloxane to a thermoplastic resin, or (d)(iii) a mixture of (d)(i) and (d)(ii) and (e) a hydrated metal compound, wherein there are incorporated the component (c) in an amount of 0.1-30 parts by weight, the component (d)(i) in an amount of 0.1-30 parts by weight when used, the component (d)(ii) in an amount of 0.1-30 parts by weight when used, and the component (e) in an amount of 50-300 parts by weight, all based on 100 parts by weight of the components (a) and (b).
Claim 2
Dependent Claim
166 words
A flame-retardant olefinic resin composition comprising (a) at least one ethylene copolymer selected from the group consisting of ethylene-α-olefin copolymers, ethylene-ethyl acrylate copolymer and ethylene-methyl methacrylate copolymer, (b) a silane-grafted polymer obtained by grafting a silane to an olefinic resin, (c) a maleic acid or maleic anhydride derivative of a polyethylene, an ethylene-vinyl acetate copolymer or an ethylene-α-olefin copolymer, (d)(i) an ethylene-ethyl acrylate-maleic anhydride copolymer or an ethylene-methyl methacrylatemaleic anhydride copolymer, or (d)(ii) a siliconemodified polymer obtained by graft-polymerizing a reactive polyorganosiloxane to a thermoplastic resin, or (d)(iii) a mixture of (d)(i) and (d)(ii) and (e) a hydrated metal compound, wherein there are incorporated the component (c) in an amount of 0.1-30 parts by weight, the component (d)(i) in an amount of 0.1-30 parts by weight when used, the component (d)(ii) in an amount of 0.1-30 parts by weight when used, and the component (e) in an amount of 50-300 parts by weight, all based on 100 parts by weight of the components (a) and (b).
Claim 3
Dependent Claim
37 words
A flame-retardant olefinic resin composition according to claim 1, wherein the α-olefin of the ethylene-α-olefin copolymers is selected from the group consisting of propylene, butene-1, pentene-1, hexene-1, heptene-1, octene-1, 4-methylpentene-1, 4-methylhexene-1, 4,4-dimethylpentene-1, nonene-1, decene-1, undecene-1 and dodecene-1.
Claim 4
Dependent Claim
51 words
A flame-retardant olefinic resin composition according to claim 1, wherein the olefinic resin to be grafted with a silane is selected from the group consisting of low density polyethylene medium density polyethylene, high density polyethylene ethylene-α-olefin copolymers, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-propylene rubber, and ethylene-propylene-diene rubbers.
Claim 5
Dependent Claim
71 words
A flame-retardant olefinic resin composition according to claim 1, wherein the silane-grafted polymer is obtained by reacting an olefinic resin with an organic silane represented by the general formula RR'SiY 2 wherein R is a monovalent olefinically unsaturated hydrocarbon group; Y is a hydrolyzable organic group; and R' is a monovalent hydrocarbon group other than unsaturated aliphatic hydrocarbon groups or is same as Y, in the presence of a free-radical-generating compound.
Claim 6
Dependent Claim
36 words
A flame-retardant olefinic resin composition according to claim 1, wherein the silane-grafted polymer is incorporated in an amount of at least 2 parts by weight per 100 parts by weight of the components (a) and (b).
Claim 7
Dependent Claim
34 words
A flame-retardant olefinic resin composition according to claim 1, wherein the crosslinking degree of the silane-grafted polymer is 20-80% by weight in terms of a gel fraction which is defined as a xylene insoluble.
Claim 8
Dependent Claim
46 words
A flame-retardant olefinic resin composition according to claim 1, wherein the thermoplastic resin to which a reactive polyorganosiloxane is to be graft-polymerized, is selected from the group consisting of polyethylene, polypropylene, ethylene-α-olefin copolymers, ethylene-vinyl acetate copolymer, ethyleneethyl acrylate copolymer, ethylene-methyl methacrylate copolymer, polystyrene and acrylonitrile-butadienestyrene copolymer.
Claim 9
Dependent Claim
77 words
A flame-retardant olefinic resin composition according to claim 1, wherein the hydrated metal compound is a compound having a decomposition-starting temperature of 150°-450° C. and represented by the general formula M m O n .XH 2 O, wherein M is a metal; m and n are each an integer of 1 or more determined by the valency of the metal; and X is the number of molecules of bound water, or a double salt containing said compound
Claim 10
Dependent Claim
30 words
A flame-retardant olefinic resin composition according to claim 8, wherein the M is selected from the metals of groups IA, IIA, IIB, IIIA, IVA and IVB of the periodic table.
Claim 11
Dependent Claim
24 words
A flame-retardant olefinic resin composition according to claim 9, wherein the M is selected from the metals of group IIA of the periodic table.
Claim 12
Dependent Claim
24 words
A flame-retardant olefinic resin composition according to claim 9, wherein the M is selected from the metals of group IIIA of the periodic table.
Claim 13
Dependent Claim
18 words
A flame-retardant olefinic resin composition according to claim 8, wherein the hydrated metal compound is magnesium oxide monohydrate.
Claim 14
Dependent Claim
18 words
A flame-retardant olefinic resin composition according to claim 8, wherein the hydrated metal compound is aluminum oxide trihydrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |