Patent US4022849A successfully refreshed from Google Patents.
US4022849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked vinyl halide polymers as flame retardant additives for thermoplastics
Assignee: Akzo America Inc
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Filing: 1974-10-07
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Granted: 1977-05-10
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Expires: 1994-10-07
Abstract
Abstract There are disclosed fire retardant polyblends comprising thermoplastic polymers intimately admixed with a crosslinked copolymer of a vinyl halide, preferably a crosslinked vinyl chloride copolymer. These fire retardant polyblends may be utilized in a variety of coating, impregnating and especially molding applications wherein it is desired to provide fire retardancy to the resulting end product.
Inventors
- 👤 Jung Il Jin
- 👤 Paul Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K3/00; C08K3/01; C08K3/013; C08L101/00; C08L23/10; C08L55/00; C08L55/02; C08L75/00; C08L75/04; C08L2201/00; C08L2201/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
74 words
A fire retardant polyblend comprising an intimate admixture of at least one acrylonitrile-butadiene-styrene resin and an effective flame retarding concentration of at least one crosslinked copolymer of: (1) at least one vinyl halide selected from the group consisting of vinyl chloride, vinyl bromide and vinyl fluoride present in a concentration of from 50-99% by weight and (2) at least one polyfunctional ethylenically unsaturated monomer, present in a concentration of from about 1-50% by weight.
Claim 2
Dependent Claim
74 words
A fire retardant polyblend comprising an intimate admixture of at least one acrylonitrile-butadiene-styrene resin and an effective flame retarding concentration of at least one crosslinked copolymer of: (1) at least one vinyl halide selected from the group consisting of vinyl chloride, vinyl bromide and vinyl fluoride present in a concentration of from 50-99% by weight and (2) at least one polyfunctional ethylenically unsaturated monomer, present in a concentration of from about 1-50% by weight.
Claim 3
Dependent Claim
79 words
The polyblend of claim 1, wherein the polyfunctional ethylenically unsaturated monomer of said crosslinked copolymer is selected from the group consisting of allyl methacrylate, divinyl benzene, ethylene glycol dimethacrylate, trimethylolpropane, trimethacrylate, methylene-bis-acrylamide, diethylene glycol diacrylate, ethylene glycol diacrylate, divinyl ether, diallyl adipate, 2-vinyloxyethyl ether, diallyl fumarate, diallyl phthalate, divinyl sulfone, divinyl carbitol, butylene dimethacrylate, trimethylene glycol diacrylate, butylene glycol diacrylate, pentamethylene glycol diacrylate, glyceryl triacrylate, octylene glycol diacrylate, trimethylene propane triacrylate, the tetraacrylate ester of pentaerythritol and ethyl diallylphosphonate.
Claim 4
Dependent Claim
18 words
The polyblend of claim 2, wherein the polyfunctional ethylenically unsaturated monomer of said crosslinked copolymer is allyl methacrylate.
Claim 5
Dependent Claim
16 words
The polyblend of claim 1, wherein the vinyl halide of said crosslinked copolymer is vinyl chloride.
Claim 6
Dependent Claim
25 words
The polyblend of claim 1, wherein said crosslinked copolymer also contains up to about 49%, by weight, of at least one optional monofunctional vinyl comonomer.
Claim 7
Dependent Claim
29 words
The polyblend of claim 1, wherein said crosslinked vinyl halide copolymer is present in a concentration of from about 5 to 50% of the total weight of said polyblend.
Claim 8
Dependent Claim
11 words
The polyblend of claim 1 wherein antimony trioxide is also present.
Claim 9
Dependent Claim
45 words
A fire retardant polyblend comprising an intimate admixture of at least one acrylonitrile-butadiene-styrene resin and an effective flame retarding concentration of a crosslinked copolymer of from about 50-99% by weight, of vinyl chloride and from about 1-50%, by weight of a polyfunctional ethylenically unsaturated monomer.
Claim 10
Dependent Claim
45 words
A fire retardant polyblend comprising an intimate admixture of at least one acrylonitrile-butadiene-styrene resin and an effective flame retarding concentration of a crosslinked copolymer of from about 50-99% by weight, of vinyl chloride and from about 1-50%, by weight of a polyfunctional ethylenically unsaturated monomer.
Claim 11
Dependent Claim
80 words
The polyblend of claim 8, wherein the polyfunctional ethylenically unsaturated monomer of said crosslinked copolymer is selected from the group consisting of allyl methacrylate, divinyl benzene, ethylene glycol dimethacrylate, trimethylolpropane, trimethyacrylate, methylene-bis-acrylamide, diethylene glycol diacrylate, ethylene glycol diacrylate, divinyl ether, diallyl adipate, 2-vinyl oxyethyl ether, diallyl fumarate, diallyl phthalate, divinyl sulfone, divinyl carbitol, butylene dimethacrylate, trimethylene glycol diacrylate, butylene glycol diacrylate, pentamethylene glycol diacrylate, glyceryl triacrylate, octylene glycol diacrylate, trimethylene propane triacrylate, the tetraacrylate ester of pentaerythritol and ethyl diallylphosphonate.
Claim 12
Dependent Claim
21 words
The polymer composition of claim 8, wherein the polyfunctional ethylenically unsaturated monomer of said crosslinked vinyl chloride copolymer is allyl methacrylate.
Claim 13
Dependent Claim
28 words
The polymer composition of claim 9, wherein said crosslinked vinyl chloride copolymer also contains up to about 49%, by weight of at least one optional monofunctional vinyl comonomer.
Claim 14
Dependent Claim
29 words
The polyblend of claim 8, wherein said crosslinked vinyl chloride copolymer is present in a concentration of from about 5 to 50%, of the total weight of said polyblend.
Claim 15
Dependent Claim
11 words
The polyblend of claim 8, wherein antimony trioxide is also present.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |