US4430470A
Expired / Lapsed
US
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Flame retardant additives based on alumina trihydrate and ethylene polymer compositions, containing same, having improved flame retardant properties
Assignee: NUC Corp
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Filing: 1982-06-30
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Granted: 1984-02-07
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Expires: 2002-06-30
Abstract
Abstract Flame retardant additive comprising alumina trihydrate and a methyl hydrogen polysiloxane which when added to ethylene polymers provide compositions which have improved flame retardant properties, have reduced gas evolution, do not drip or give off noxious gases on burning and are particularly useful as jacketing material about wire and cables.
Inventors
- 👤 Seiho Taniguchi
- 👤 Yuichiro Sakuma
- 👤 Tadashi Yoshii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:43
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08K9/06; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/54; C08K5/541; C08K5/5415; C08K5/5419; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L23/0869; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C08L2201/00; C08L2201/02; C08L2203/00; C08L2203/20; C08L2203/202; C08L83/00; C08L83/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
A flame retardant additive comprising an alumina trihydrate having an average particle size of from about 0.01 to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR2## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100, said polysiloxane being present in an amount of about 0.05 to about 2 percent by weight based on the weight of the alumina trihydrate.
Claim 2
Dependent Claim
72 words
A flame retardant additive comprising an alumina trihydrate having an average particle size of from about 0.01 to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR2## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100, said polysiloxane being present in an amount of about 0.05 to about 2 percent by weight based on the weight of the alumina trihydrate.
Claim 3
Dependent Claim
23 words
A flame retardant additive as defined in claim 1 wherein the alumina trihydrate is surface treated with the polysiloxane defined in claim 1.
Claim 4
Dependent Claim
23 words
A flame retardant additive as defined in claim 1 wherein in the formula of said polysiloxane m is 20 and n is 20.
Claim 5
Dependent Claim
98 words
A composition comprising an ethylene polymer, alumina trihydrate having an average particle size of from about 0.01 μm to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR3## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100, said alumina trihydrate being present in an amount of about 25 to 65 percent by weight, based on the total weight of the composition and said polysiloxane being present in an amount of about 0.05 to about 2 percent by weight, based on the weight of the alumina trihydrate.
Claim 6
Dependent Claim
98 words
A composition comprising an ethylene polymer, alumina trihydrate having an average particle size of from about 0.01 μm to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR3## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100, said alumina trihydrate being present in an amount of about 25 to 65 percent by weight, based on the total weight of the composition and said polysiloxane being present in an amount of about 0.05 to about 2 percent by weight, based on the weight of the alumina trihydrate.
Claim 7
Dependent Claim
16 words
A composition as defined in claim 4 wherein the ethylene polymer is an ethylene-vinyl acetate copolymer.
Claim 8
Dependent Claim
16 words
A composition as defined in claim 4 wherein the ethylene polymer is an ethylene-ethyl acrylate copolymer.
Claim 9
Dependent Claim
18 words
A composition as defined in claim 4 wherein the said alumina trihydrate is surface treated with said polysiloxane.
Claim 10
Dependent Claim
21 words
A composition as defined in claim 4 wherein in the formula of said polysiloxane, m is 0 and n is 20.
Claim 11
Dependent Claim
21 words
A composition as defined in claim 4 wherein in the formula of said polysiloxane, m is 20 and n is 20.
Claim 12
Dependent Claim
88 words
A composition comprising an ethylene polymer which is an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer, having a melt index of about 0.5 to 30 g/10 min. and a vinyl acetate or ethyl acrylate content of about 2 to 50 percent by weight, an alumina trihydrate having an average particle size of from about 0.01 μm to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR4## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100.
Claim 13
Dependent Claim
88 words
A composition comprising an ethylene polymer which is an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer, having a melt index of about 0.5 to 30 g/10 min. and a vinyl acetate or ethyl acrylate content of about 2 to 50 percent by weight, an alumina trihydrate having an average particle size of from about 0.01 μm to about 30 μm and a methyl hydrogen polysiloxane of the formula: ##STR4## wherein m is an integer from 0 to 50 and n is an integer from 10 to 100.
Claim 14
Dependent Claim
25 words
A composition as defined in claim 10 wherein the ethylene polymer is an ethylene-ethyl acrylate copolymer having a melt index of about 6 g/10 min.
Claim 15
Dependent Claim
25 words
A composition as defined in claim 10 wherein the ethylene polymer is an ethylene-vinyl acetate copolymer having a melt index of about 2.5 g/10 min.
Claim 16
Dependent Claim
13 words
A composition as defined in claim 4 wherein the ethylene polymer is polyethylene.
Claim 17
Dependent Claim
21 words
A composition as defined in claim 4 wherein the ethylene polymer is an ethylene-α-olefin copolymer produced by a low pressure process.
Claim 18
Dependent Claim
11 words
A composition as defined in claim 4 containing an organic peroxide.
Claim 19
Dependent Claim
10 words
The crosslinked product of the composition defined in claim 15.
Claim 20
Dependent Claim
23 words
A flame retardant additive as defined in claim 1 wherein in the formula of said polysiloxane m is 0 and n is 20.
Claim 21
Dependent Claim
20 words
A wire or cable having as jacketing thereon the composition or crosslinked product of the composition defined in claim 4.
Claim 22
Dependent Claim
19 words
An electrical conductor having as insulation thereon the composition or crosslinked product of the composition defined in claim 4.
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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) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |