US4764539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant polymers
Assignee: Saint Gobain Abrasives Inc
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Filing: 1987-11-24
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Granted: 1988-08-16
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Expires: 2007-11-24
Abstract
Abstract A combination of materials is disclosed which imparts superior fire retardant properties to organic polymers and the gaseous by-products of those polymers. The combination is made up of an organo phosphate plasticizer, aluminum hydroxide or alumina hydrate, antimony trioxide, a borate, a brominated hydrocarbon and a chlorinated paraffin.
Inventors
- 👤 Michel Ladang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/06; C09K21/12; C08; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08K3/38; C08K5/00; C08K5/02; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C09K21/08; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A foamed organic polymer including a flame retarding system for said foamed polymer and said foamed polymer's gaseous by-products, said flame retarding system comprising 20 to 120 parts by weight of an organo phosphate plasticizer 1 to 15 parts by weight of antimony trioxide, 5 to 60 parts by weight of aluminum hydroxide or hydrated alumina, 1 to 15 parts by weight of a borate, and 1 to 20 parts by weight of a brominated hydrocarbon, all per 100 parts by weight of said polymer.
Claim 2
Dependent Claim
85 words
A foamed organic polymer including a flame retarding system for said foamed polymer and said foamed polymer's gaseous by-products, said flame retarding system comprising 20 to 120 parts by weight of an organo phosphate plasticizer 1 to 15 parts by weight of antimony trioxide, 5 to 60 parts by weight of aluminum hydroxide or hydrated alumina, 1 to 15 parts by weight of a borate, and 1 to 20 parts by weight of a brominated hydrocarbon, all per 100 parts by weight of said polymer.
Claim 3
Dependent Claim
35 words
The organic polymer of claim 1 wherein said polymer is a plasticized thermoplastic polymer selected from the group consisting of polyvinyl chloride, cellulose nitrate, chlorinated rubber, nitrile rubber, styrene butadiene rubber, and unsubstituted hydrocarbon rubber.
Claim 4
Dependent Claim
25 words
An organic polymer according to claims 1 or 2 wherein said flame retarding system includes 5 to 30 parts by weight of a chlorinated paraffin.
References Cited (Backward Citations)
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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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |