US4188313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions intended for the flameproofing of plastics
Assignee: Rhone Poulenc Industries SA
•
Filing: 1976-05-28
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Granted: 1980-02-12
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Expires: 1996-05-28
Abstract
Abstract Compositions based on red phosphorus and epoxy resin for flame proofing plastics without the release of toxic products during use. The compositions consist of a pulverulent mixture containing from 50 to 95% by weight of red phosphorus and from 5 to 50% by weight of compounds having epoxy groups in their chain.
Inventors
- 👤 Jacqueline Cerny
- 👤 Gilbert Vivant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:30
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/18; C08K3/20; C08K3/22; C08L; C08L101/00; C08L63/00; C08L2201/00; C08L2201/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
Compositions for flameproofing plastics, which compositions are in particulate form and do not evolve toxic products when use is made of the plastics characterised in that the flameproofing composition consists of a mixture comprising (a) 50 to 95% by weight of red phosphorus in the form of a powder having a mean particle size of less than 200μ and (b) 5 to 50% by weight of epoxy resins, and in which the particles of red phosphorus are coated with the epoxy resin.
Claim 2
Dependent Claim
82 words
Compositions for flameproofing plastics, which compositions are in particulate form and do not evolve toxic products when use is made of the plastics characterised in that the flameproofing composition consists of a mixture comprising (a) 50 to 95% by weight of red phosphorus in the form of a powder having a mean particle size of less than 200μ and (b) 5 to 50% by weight of epoxy resins, and in which the particles of red phosphorus are coated with the epoxy resin.
Claim 3
Dependent Claim
14 words
Compositions as claimed in claim 1, in which (b) is a non-crosslinked epoxy resin.
Claim 4
Dependent Claim
15 words
Compositions as claimed in claim 1, in which (b) is an epoxy resin partially cross-linked.
Claim 5
Dependent Claim
23 words
Compositions as claimed in claim 1, in which the epoxy resins are polymers having an epoxy equivalent weight of between 80 and 1,000.
Claim 6
Dependent Claim
43 words
Compositions as claimed in claim 1, which contain in addition up to 100% by weight, relative to the red phosphorus, of a metal oxide selected from the group consisting of the oxides of copper, zinc, silver, iron, antimony, vanadium, tin, titanium or magnesium.
Claim 7
Dependent Claim
66 words
A plastic composition for the production of flameproofed shaped articles comprising a plastic, with or without filler, in which the plastic is flameproofed by admixture with 0.2 to 20% by weight of previously formed particles of 50 to 95% by weight red phosphorus and 5 to 50% by weight epoxy resin, in which in the preformed particles the phosphorus is coated with the epoxy resin compound.
Claim 8
Dependent Claim
66 words
A plastic composition for the production of flameproofed shaped articles comprising a plastic, with or without filler, in which the plastic is flameproofed by admixture with 0.2 to 20% by weight of previously formed particles of 50 to 95% by weight red phosphorus and 5 to 50% by weight epoxy resin, in which in the preformed particles the phosphorus is coated with the epoxy resin compound.
Claim 9
Dependent Claim
17 words
Plastic compositions as claimed in claim 6, in which the plastic is a glass fibre filled plastic.
Claim 10
Dependent Claim
29 words
Plastic compositions as claimed in claim 6, in which the plastic is a filled plastic in which the filler is selected from the group consisting of talc and kaolin.
References Cited (Backward Citations)
US3477982A
Cited
US3883475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-11 | 1983-08-13 | 1984-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-11 | 1987-08-13 | 1988-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-11 | 1991-08-13 | 1992-02-12 | $7700.00 | Window Closed / Lapsed |