US3865760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant materials
Assignee: Magnesium Elektron Ltd
•
Filing: 1973-07-30
•
Granted: 1975-02-11
•
Expires: 1993-07-30
Abstract
Abstract A rubber or plastics composition contains a flame-retarding agent containing calcium and borate radicals. A preferred agent is a hydrated mineral such as colemanite. The agent may be used in combination with a filler such as calcium carbonate and alumina trihydrate.
Inventors
- 👤 Frank Pitts
- 👤 Michael Hilton Clubley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:19
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/38; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/906; Y10S521/907; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
A COMPOSITION CONSISTING ESSENTIALLY OF RUBBER AND A FLAME-RETARDING AGENT COMPRISING AN INORGANIC COMPOUND CONTAINING CALCIUM AND BORATE RADICALS IN AN AMOUNT SUFFICIENT TO IMPART SIGNIFICANT FLAME RETARDENCY TO SAID COMPOSITION.
Claim 2
Dependent Claim
31 words
A COMPOSITION CONSISTING ESSENTIALLY OF RUBBER AND A FLAME-RETARDING AGENT COMPRISING AN INORGANIC COMPOUND CONTAINING CALCIUM AND BORATE RADICALS IN AN AMOUNT SUFFICIENT TO IMPART SIGNIFICANT FLAME RETARDENCY TO SAID COMPOSITION.
Claim 3
Dependent Claim
19 words
A composition according to claim 1, in which the inorganic compound is a natural mineral comprising a hydrated salt.
Claim 4
Dependent Claim
13 words
A composition according to claim 2, in which the inorganic compound is colemanite.
Claim 5
Dependent Claim
17 words
A composition according to claim 2, in which the inorganic compound is selected from ulexite and pandermite.
Claim 6
Dependent Claim
20 words
A composition according to claim 1, in which said composition also contains a flame-retarding agent in addition to said compound.
Claim 7
Dependent Claim
26 words
A composition according to claim 5, in which said additional flame-retarding agent is selected from tri-hydrate of alumina and organic flame-retardant compounds containing bromine or chlorine.
Claim 8
Dependent Claim
13 words
A composition according to claim 1, which contains calcium carbonate as a filler.
Claim 9
Dependent Claim
24 words
A composition according to claim 1, which is unfoamed and in which the average grain diameter of said inorganic compOund is about 1 micron.
Claim 10
Dependent Claim
25 words
A composition according to claim 1, which is foamed and in which the inorganic compound has an average grain diameter from 3 to 150 microns.
Claim 11
Dependent Claim
22 words
Carpet and upholstery material, comprising a composition as claimed in claim 1 adhered to the undersurface of said carpet and upholstery material.
References Cited (Backward Citations)
US3202570A
Cited
US3367863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |