US4260688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-proofing of flexible polyurethane foamed plastics by post-treatment using aqueous ammoniacal combinations of benzenephosphonic acid/melamine salts and polymeric chlorine-containing latex
Assignee: Individual
•
Filing: 1980-02-08
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Granted: 1981-04-07
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Expires: 2000-02-08
Abstract
Abstract This invention relates to aqueous ammoniacal combinations of benzenephosphonic acid/melamine salts as flame-retardants and a polymeric chlorine-containing film-forming latex as a carrier for the flame-retardants, for the post-treatment of flammable flexible polyurethane foamed plastics to provide products that are self-quenching and substantially resistant to both flame-initiation and flame-propagation after free flame exposures.
Inventors
- 👤 Eli Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:52
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/42; C08J2375/00; C08J2375/04; C08J2421/00; C08J2427/00; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
Aqueous mixtures of the salts of benzenephosphonic acid and melamine as flame-retardants made ammoniacal to a pH of 8 to 10 wherein the mol percentage of benzenephosphonic is within the range of 331/3 to 662/3 mol percent, and a carboxylated vinylidene chloride-butadiene copolymer latex having a chlorine content of approximately 36% and a pH of approximately 8 as a carrier for the flame-retardant salts, in weight ratios of flame-retardant salts to polymeric carrier solids from 1.5 to 1 to 2.0 to 1 respectively, for the post-treatment of flexible polyurethane foamed plastics to impart reduced combustibility and improved flame-retardency.
Claim 2
Dependent Claim
98 words
Aqueous mixtures of the salts of benzenephosphonic acid and melamine as flame-retardants made ammoniacal to a pH of 8 to 10 wherein the mol percentage of benzenephosphonic is within the range of 331/3 to 662/3 mol percent, and a carboxylated vinylidene chloride-butadiene copolymer latex having a chlorine content of approximately 36% and a pH of approximately 8 as a carrier for the flame-retardant salts, in weight ratios of flame-retardant salts to polymeric carrier solids from 1.5 to 1 to 2.0 to 1 respectively, for the post-treatment of flexible polyurethane foamed plastics to impart reduced combustibility and improved flame-retardency.
Claim 3
Dependent Claim
59 words
Flexible polyurethane foamed plastics treated with the aqueous ammoniacal combinations of claim 1 in amounts to contain 25 to 40 weight percent of the flame-retardant salts and chlorine-containing copolymer carrier solids of from 50 to 75 percent of the flame-retardant salts, based on the total weight of the treated foamed plastic, so as to be self-extinguishing and substantially non-flammable.
Claim 4
Dependent Claim
24 words
Flexible polyurethane foamed plastics treated with the aqueous ammoniacal combinations of claim 1 in an amount so as to be self-extinguishing and substantially non-combustible.
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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |