US3816307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant resins
Assignee: Individual
•
Filing: 1972-04-28
•
Granted: 1974-06-11
•
Expires: 1992-04-28
Abstract
Abstract A composition for rendering resin compositions fire retardant consisting essentially of a dry mixture of particles of a finely divided Group I metal borate or ammonium borate, said borate having an average particle size of from 0.1 to about 25 microns, and antimony oxide, the weight ratio of said borate to antimony oxide being no greater than 4:1.
Inventors
- 👤 W Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
C; C08; C08K; C08K3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
12 words
A composition according to claim 1 further including a halogenated organic material.
Claim 2
Dependent Claim
38 words
A composition according to claim 1 in which the borate is a hydrated sodium borate having a molar ratio of Na2O:B2O3 of no more than 0.5 and an average particle size of no more than about 15 microns.
Claim 3
Dependent Claim
52 words
A self-extinguishing fire retardant for a polyester resin consisting essentially of a dry mixture of antimony oxide, a chlorinated organic compound and a finely divided alkali metal borate or ammonium borate having an average particle size below 25 microns, the weight ratio of borate to antimony oxide being no greater than 4:1.
Claim 4
Dependent Claim
21 words
A composition in accordance with claim 1 in which said particles have an average size of less than about 15 microns.
Claim 5
Dependent Claim
14 words
A composition in accordance with claim 1 in which said borate is sodium borate.
Claim 6
Dependent Claim
18 words
A composition in accordance with claim 3 in which the said Na2O:B2O3 molar ratio is 0.25 to 0.30.
Claim 7
Dependent Claim
41 words
A composition for rendering resin compositions fire retardant consisting essentially of a dry mixture of particles of a sodium borate having an Na2O:B2O3 molar ratio of 0.28, said boRate having an average particle size of from 0.1 to about 25 microns.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |