US4427745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel fire retardant compositions and methods
Assignee: Individual
•
Filing: 1982-08-03
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Granted: 1984-01-24
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Expires: 2002-08-03
Abstract
Abstract There is disclosed a resinous solution comprising the reaction product of (a) about 100-140 parts by weight of an aldehyde, (b) about 75-125 parts by weight of urea, (C) about 30-50 parts by weight of an alkanolamine, and (d) about 175-225 parts by weight of phosphoric acid, and optionally (e) melamine, and (f) a soil and stain resistant agent. The solution is a stable, clear solution having a good shelf-life and forms flexible, hard, nonburning films on substrates such as textiles.
Inventors
- 👤 Glenn A. Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:20
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
62 words
A resinous solution comprising the reaction product of (a) about 100-140 parts by weight ofan aldehyde, (b) about 75-125 parts by weight of urea, (c) about 30-50 parts by weight of an alkanolamine, and (d) about 175-225 parts by weight of phosphoric acid, the solution being a stable clear solution having a good shelf-life and forming flexible hard nonburning films on substrates.
Claim 2
Dependent Claim
62 words
A resinous solution comprising the reaction product of (a) about 100-140 parts by weight ofan aldehyde, (b) about 75-125 parts by weight of urea, (c) about 30-50 parts by weight of an alkanolamine, and (d) about 175-225 parts by weight of phosphoric acid, the solution being a stable clear solution having a good shelf-life and forming flexible hard nonburning films on substrates.
Claim 3
Dependent Claim
41 words
A resinous solution according to claim 1 wherein the solution is formed by mixing the aldehyde and urea with continuous agitation, then adding the alkanolamine, and then adding the phosphoric acid solution and continuing agitation until a clear solution is obtained.
Claim 4
Dependent Claim
62 words
A resinous solution according to claim 1 wherein the aldehyde is present in an amount of about 110-130 parts by weight, the urea is present in an amount of about 80-100 parts by weight, the alkanolamine is present in an amount of about 35-45 parts by weight and the phosphoric acid is present in an amount of about 185-210 parts by weight.
Claim 5
Dependent Claim
16 words
A composition according to claim 1 which also contains about 45-60 parts by weight of melamine.
Claim 6
Dependent Claim
19 words
A composition according to claim 4 which contains about 5-10 weight percent of a soil and stain resistant ingredient.
Claim 7
Dependent Claim
16 words
A composition according to claim 1 wherein the aldehyde is a 37% aqueous solution of formaldehyde.
Claim 8
Dependent Claim
15 words
A composition according to claim 1 wherein the phosphoric acid is 85% aqueous phosphoric acid.
Claim 9
Dependent Claim
42 words
A composition according to claim 1 wherein the components comprise about 324 parts of a 37% solution of formaldehyde, about 90 parts of urea, about 40 parts of triethanolamine, about 55 parts of melamine, and about 230 parts of 85% phosphoric acid.
Claim 10
Dependent Claim
13 words
A wood substrate treated with a composition of claim 1, dried and cured.
Claim 11
Dependent Claim
15 words
A paper or cardboard substrate treated with a composition of claim 1, dried and cured.
Claim 12
Dependent Claim
13 words
Textiles coated or impregnated with a composition of claim 1, dried and cured.
Claim 13
Dependent Claim
13 words
Fabrics coated or impregnated with a composition of claim 1, dried and cured.
Claim 14
Dependent Claim
27 words
A method for imparting fire-retardant characteristics to cellulosic and synthetic resin materials which comprises treating the materials with a composition according to claim 1, drying and curing.
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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) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |