Patent US4095945A successfully refreshed from Google Patents.
US4095945A
Expired / Lapsed
US
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Process for treating textile articles
Assignee: Toyobo Co Ltd
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Filing: 1976-07-23
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Granted: 1978-06-20
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Expires: 1996-07-23
Abstract
Abstract Textile materials are rendered flame retardant by applying a phosphorus-containing condensation product, a nitrogen-phosphorus-containing condensation product and an aminoplast precondensate to the textile material, and fixing them on the textile material.
Inventors
- 👤 Kohei Umetani
- 👤 Masakazu Date
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:47
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
193 words
A process for rendering a textile material flame retardant, which comprises applying to the textile material (1) a phosphorus-containing condensation product obtained (A) by heating a tetrakis(hydroxymethyl)phosphonium compound at 151° - 180° C. at reduced pressure under acidic conditions to condense said phosphonium compound through dehydration and deformaldehydation reactions, the molar ratio of P-CH 2 -P linkage/P-CH 2 OCH 2 -P linkage in said condensation product being 0.8 - 4.0, or (B) by heating a tetrakis(hydroxymethyl)phosphonium compound at 120° - 180° C. in the presence of 0.001 - 0.02 mol of an amino group-containing compound per mol of said phosphonium compound at reduced pressure under acidic conditions to condense said phosphonium compound through dehydration and deformadelhydation reactions, the molar ratio of P-CH 2 -P linkage/P-CH 2 OCH 2 -P linkage in said condensation product being 0.8 - 4.0, (2) a nitrogen-phosphorus-containing condensation product obtained by condensing a tetrakis(hydroxymethyl)phosphonium compound with an aminoplast precursor, and (3) an aminoplast precondensate, the weight ratio of (1):(2) being from 90:10 to 10:90 and the weight ratio of (1) + (2) : (3) being from 80:20 to 99:1; and fixing (1), (2) and (3) on the textile material.
Claim 2
Dependent Claim
193 words
A process for rendering a textile material flame retardant, which comprises applying to the textile material (1) a phosphorus-containing condensation product obtained (A) by heating a tetrakis(hydroxymethyl)phosphonium compound at 151° - 180° C. at reduced pressure under acidic conditions to condense said phosphonium compound through dehydration and deformaldehydation reactions, the molar ratio of P-CH 2 -P linkage/P-CH 2 OCH 2 -P linkage in said condensation product being 0.8 - 4.0, or (B) by heating a tetrakis(hydroxymethyl)phosphonium compound at 120° - 180° C. in the presence of 0.001 - 0.02 mol of an amino group-containing compound per mol of said phosphonium compound at reduced pressure under acidic conditions to condense said phosphonium compound through dehydration and deformadelhydation reactions, the molar ratio of P-CH 2 -P linkage/P-CH 2 OCH 2 -P linkage in said condensation product being 0.8 - 4.0, (2) a nitrogen-phosphorus-containing condensation product obtained by condensing a tetrakis(hydroxymethyl)phosphonium compound with an aminoplast precursor, and (3) an aminoplast precondensate, the weight ratio of (1):(2) being from 90:10 to 10:90 and the weight ratio of (1) + (2) : (3) being from 80:20 to 99:1; and fixing (1), (2) and (3) on the textile material.
Claim 3
Dependent Claim
27 words
The process as claimed in claim 1 wherein an amino group-containing compound as a fourth component (4) is used in combination with components (1), (2) and (3).
Claim 4
Dependent Claim
37 words
The process of claim 2 wherein, the ratio by weight of (1) + (2) : (4) is 80:20 to 100:0 and the ratio by weight of (1) + (2) : (3) + (4) is 70:30 to 99:1.
Claim 5
Dependent Claim
17 words
The process as claimed in claim 2 wherein the amino group-containing compound for component (4) is urea.
Claim 6
Dependent Claim
16 words
The process as claimed in claim 1 wherein component (1) is obtained by the method (A).
Claim 7
Dependent Claim
16 words
The process as claimed in claim 1 wherein component (1) is obtained by the method (B).
Claim 8
Dependent Claim
20 words
The process as claimed in claim 6 wherein the amino group-containing compound is an aminoplast precursor that can be methylolated.
Claim 9
Dependent Claim
14 words
The process as claimed in claim 6 wherein the amino group-containing compound is dicyandiamide.
Claim 10
Dependent Claim
42 words
The process as claimed in claim 1 wherein the nitrogen-phosphorus-containing condensation product is a condensation product obtained by reacting a tetrakis(hydroxymethyl)phosphonium compound with an aminoplast precursor in the molar ratio of 1:0.05 to 1.0 at 80° - 150° C. under acidic conditions.
Claim 11
Dependent Claim
19 words
The process as claimed in claim 9 wherein the aminoplast precursor is urea, thiourea, guanidine, biuret, dicyandiamide or melamine.
Claim 12
Dependent Claim
13 words
The process as claimed in claim 9 wherein the aminoplast precursor is urea.
Claim 13
Dependent Claim
48 words
The process as claimed in claim 7 wherein the nitrogen-phosphorus-containing condensation product is a condensation product obtained by reacting a tetrakis(hydroxymethyl)phosphonium compound with an aminoplast precursor in the molar ratio of 1:0.2 to 0.8 at 100° - 120° C. at a pH below 5.5 in an aqueous system.
Claim 14
Dependent Claim
18 words
The process as claimed in claim 1 wherein the aminoplast precondensate is methylolmelamine or its methyl alcoholetherified product.
Claim 15
Dependent Claim
26 words
The process as claimed in claim 1 wherein the fixing treatment is a thermo-fixing treatment at 120° - 200° C. for 10 seconds to 30 minutes.
Claim 16
Dependent Claim
21 words
The process as claimed in claim 1 wherein the textile material is a blended product of polyester fibers and cellulose fibers.
Claim 17
Dependent Claim
36 words
A composition for treating a textile material to render the textile material flame retardant, which comprises the components (1), (2) and (3) as described in claim 1 in the weight ratios as described in claim 1.
Claim 18
Dependent Claim
9 words
Textile material treated by the process of claim 1.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |