US3725359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant resin compositions of post-chlorinated vinyl halide-bis(hydrocarbyl) vinylphosphonate copolymers
Assignee: Stauffer Chemical Co
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Filing: 1970-12-23
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Granted: 1973-04-03
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Expires: 1990-12-23
Abstract
Abstract There are disclosed post-chlorinated copolymers of: (1) one or more vinyl halides; (2) one or more bis(hydrocarbyl) vinylphosphonates; and (3) as an optional component one or more ethylenically unsaturated monomers. These post-chlorinated products have a higher glass transition temperature than the copolymers from which they are derived and are, therefore, of greater utility in many applications such, for example, as in the preparation of polyblends with burning thermoplastics wherein they impart a significant degree of flame retardance without causing substantial reduction in the heat distortion temperature of the resulting polyblends.
Inventors
- 👤 J Goswami
- 👤 J Jin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:43
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08L; C08L101/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
13 words
The post-chlorinated copolymer of claim 1, wherein said bis(hydrocarbyl) vinylphosphonate is bis(beta-chloroethyl) vinyl-phosphonate.
Claim 2
Dependent Claim
24 words
The post-chlorinated copolymer of claim 1, wherein said vinyl halide is selected from the group consisting of vinyl chloride, vinyl bromide and vinyl fluoride.
Claim 3
Dependent Claim
13 words
The post-chlorinated copolymer of claim 3, wherein said vinyl halide is vinyl chloride.
Claim 4
Dependent Claim
42 words
The post-chlorinated copolymer of claim 1, wherein said vinyl halide is present in a concentration of from about 5 to 95 percent, by weight, and said bis(hydrocarbyl) vinylphosphonate is present in a concentration of from about 5 to 95 percent, by weight.
Claim 5
Dependent Claim
112 words
The post-chlorinated copolymer of claim 1, wherein at least one optional ethylenically unsaturated comonomer is also present therein in a concentration of up to about 50 percent, by weight, said ethylenically unsaturated comonomer being selected from the group consisting of vinylidene halides, alpha-olefins, vinyl esters of carboxylic acids, C1-C20 alkyl esters of acrylic and methacrylic acid, aryl-halo- and nitro substituted benzyl esters of acrylic and methacrylic acid, ethylenically unsaturated monocarboxylic acids, ethylenically unsaturated dicarboxylic acids, ethylenically unsaturated dicarboxylic acid anhydrides, C1-C20 mono- and dialkyl esters of ethylenically unsaturated dicarboxylic acids, amides of ethylenically unsaturated carboxylic acids, vinyl pyrrolidones, vinyl aryl compounds, nitriles of ethylenically unsaturated carboxylic acids, and C1-C20 alkyl vinyl ethers.
Claim 6
Dependent Claim
19 words
The post-chlorinated copolymer of claim 1, having a Tg in the range of from about -10* to 150* C.
Claim 7
Dependent Claim
34 words
The post-chlorinated copolymer of claim 1, which is prepared by reacting gaseous chlorine and a vinyl halide:bis (hydrocarbyl) vinylphosphonate copolymer, said reaction being carried out while said copolymer is being exposed to ultraviolet radiation.
Claim 8
Dependent Claim
20 words
A post chlorinated vinyl chloride:bis(beta-chloroethyl) vinylphosphonate copolymer having a chlorine content of from about 35 to 75 percent, by weight.
Claim 9
Dependent Claim
42 words
The post-chlorinated copolymer of claim 9, wherein said vinyl chloride is present in a concentration of from about 5 to 95 percent, by weight, and said bis(beta-chloroethyl) vinylphosphonate is present in a concentration of from about 5 to 95 percent, by weight.
Claim 10
Dependent Claim
29 words
The post-chlorinated copolymer of claim 9, having a Tg of from about -10* to 150* C. and a chlorine content of from about 35 to 75 percent, by weight.
Claim 11
Dependent Claim
32 words
The post-chlorinated copolymer of claim 6 wherein said optional ethylenically unsaturated comonomer is selected from the group consisting of vinylidene chloride, styrene, and the lower alkyl esters of acrylic and methacrylic acid.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |