Patent US4383071A successfully refreshed from Google Patents.
US4383071A
Expired / Lapsed
US
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Flame and smoke retardant elastomers formed by grafting vinylidene chloride on diene/butyl acrylate copolymers
Assignee: Bridgestone Firestone Inc
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Filing: 1981-05-04
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Granted: 1983-05-10
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Expires: 2001-05-04
Abstract
Abstract An elastomeric flame and smoke retardant graft copolymer consisting essentially of a backbone copolymer derived from a conjugated diene and butyl acrylate and a side chain polymer derived from vinylidene chloride is prepared by polymerization under emulsion conditions. The graft copolymer may contain from 10 to 70 percent by weight of units derived from the conjugated diene, from 5 to 40 percent by weight of units derived from butyl acrylate and from 15 to 75 percent by weight of units derived from vinylidene chloride. In addition to excellent flame and smoke retardant characteristics, the graft copolymer exhibits excellent low temperature flexibility. The graft copolymers can be utilized in applications such as cushioning, insulation and coating applications where such characteristics are of major importance.
Inventors
- 👤 David F. Lawson
- 👤 Robert A. Hayes
- 👤 Alan G. Altenau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:50
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/003; C08F; C08F265/00; C08F265/04; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
An elastomeric flame and smoke retardant graft copolymer, having excellent low temperature flexibility, consisting essentially of: (a) a backbone copolymer derived from a conjugated diene and butyl acrylate; and (b) a side chain polymer derived from vinylidene chloride; wherein the graft copolymer contains from 10 to 70 percent by weight of units derived from a conjugated diene, from 5 to 40 percent by weight of units derived from butyl acrylate and from 15 to 75 percent by weight of units derived from vinylidene chloride.
Claim 2
Dependent Claim
84 words
An elastomeric flame and smoke retardant graft copolymer, having excellent low temperature flexibility, consisting essentially of: (a) a backbone copolymer derived from a conjugated diene and butyl acrylate; and (b) a side chain polymer derived from vinylidene chloride; wherein the graft copolymer contains from 10 to 70 percent by weight of units derived from a conjugated diene, from 5 to 40 percent by weight of units derived from butyl acrylate and from 15 to 75 percent by weight of units derived from vinylidene chloride.
Claim 3
Dependent Claim
21 words
The graft copolymer of claim 1 wherein said conjugated diene is selected from the group consisting of 1,3-butadiene, isoprene and 2-chlorobutadiene.
Claim 4
Dependent Claim
12 words
The graft copolymer of claim 1 wherein said conjugated diene is 1,3-butadiene.
Claim 5
Dependent Claim
109 words
An elastomeric flame and smoke retardant polymeric composition comprising: (a) a graft copolymer, having excellent low temperature flexibility, consisting essentially of a backbone copolymer derived from a conjugated diene and butyl acrylate and a side chain polymer derived from vinylidene chloride; wherein the graft copolymer contains from 10 to 70 percent by weight of units derived from a conjugated diene, from 5 to 40 percent by weight of units derived from butyl acrylate and from 15 to 75 percent by weight of units derived from vinylidene chloride; and (b) special purpose additives selected from the group consisting of flame retardant additives, smoke suppressant additives, plasticizers, crosslinking agents and promoters.
Claim 6
Dependent Claim
109 words
An elastomeric flame and smoke retardant polymeric composition comprising: (a) a graft copolymer, having excellent low temperature flexibility, consisting essentially of a backbone copolymer derived from a conjugated diene and butyl acrylate and a side chain polymer derived from vinylidene chloride; wherein the graft copolymer contains from 10 to 70 percent by weight of units derived from a conjugated diene, from 5 to 40 percent by weight of units derived from butyl acrylate and from 15 to 75 percent by weight of units derived from vinylidene chloride; and (b) special purpose additives selected from the group consisting of flame retardant additives, smoke suppressant additives, plasticizers, crosslinking agents and promoters.
Claim 7
Dependent Claim
21 words
The polymeric composition of claim 4 wherein said conjugated diene is selected from the group consisting of 1,3-butadiene, isoprene and 2-chlorobutadiene.
Claim 8
Dependent Claim
12 words
The polymeric composition of claim 4 wherein said conjugated diene is 1,3-butadiene.
Claim 9
Dependent Claim
33 words
The polymeric composition of claim 4 wherein said flame retardant and smoke suppressant additives are selected from the group consisting of alumina trihydrate, magnesium oxide, magnesium hydroxide and zinc oxide and mixtures thereof.
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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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |