US3772068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flameproofing fibre materials of polyesters and cellulose
Assignee: Novartis AG
•
Filing: 1971-04-26
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Granted: 1973-11-13
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Expires: 1991-04-26
Abstract
Abstract A process is provided for the flameproofing of polyestercellulose fibre blends with aqueous preparations, which contain at least a tetrabis-(hydroxymethyl)-phosphonium salt, a phosphorus compound containing at least one radical of the formula WHEREIN R1 and R2 each denote an alkyl, alkenyl or halogenoalkyl radical with at most four carbon atoms and X denotes a methyl radical or a hydrogen atom, an aminoplast precondensate and optionally, an aliphatic or aromatic polyhalogenated phosphoric acid triester. The treated fibrous materials are dried and then subjected to a heat treatment.
Inventors
- 👤 P Hofmann
- 👤 H Nachbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:34
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
13 words
from 30 to 220 grams per liter of a compound of the formula
Claim 2
Dependent Claim
12 words
from 30 to 220 grams per liter of a product of formula
Claim 3
Dependent Claim
12 words
from 30 to 220 grams per liter of a product of formula
Claim 4
Dependent Claim
14 words
A process according to claim 1 in which component (1) is a tetrakis-(hydroxymethyl)-phosphonium halide.
Claim 5
Dependent Claim
13 words
from 30 to 220 grams peR liter of a compound of the formula
Claim 6
Dependent Claim
11 words
from 10 to 90 grams per liter of an aminoplast precondensate,
Claim 7
Dependent Claim
15 words
A process according to claim 1 in which component (2) comprises a compound of formula
Claim 8
Dependent Claim
10 words
from 10 to 90 grams liter of an aminoplast precondensate
Claim 9
Dependent Claim
19 words
from 10 to 90 grams per liter of the methylol or methylolalkylether derivative of urea, ethyleneurea or melamine and
Claim 10
Dependent Claim
15 words
from 10 to 90 grams per liter of a methylolmelamine or an alkylether thereof and
Claim 11
Dependent Claim
30 words
from 0 to 140 grams per liter of a polyhalogenated phosphoric acid trialkylester wherein each alkyl group contains up to four carbon atoms and contains 2 or 3 halogen atoms.
Claim 12
Dependent Claim
13 words
from 0 to 140 grams per liter of a polyhalogenated phosphoric acid trialkylester.
Claim 13
Dependent Claim
44 words
from 0 to 140 grams per liter of an aliphatic or aromatic polyhalogenated phosphoric acid trialkyl or triaryl ester, ii. Drying the blend treated in accordance with Step (i) and iii. Thereafter curing the dried blend at a temperature between about 100* and 200*C.
Claim 14
Dependent Claim
23 words
A process according to claim 1 in which component (3) is the methylol or methylol alkyl ether derivative of urea, ethyleneurea or melamine.
Claim 15
Dependent Claim
19 words
from 0 to 140 grams per liter of an aliphatic or aromatic polyhalogenated phosphoric acid trialkyl or triaryl ester.
Claim 16
Dependent Claim
17 words
A process according to claim 1 in which component (3) is a methylolmelamine or an alkylether thereof.
Claim 17
Dependent Claim
17 words
A process according to claim 1 in which component (4) is a polyhalogenated phosphoric acid trialkyl ester.
Claim 18
Dependent Claim
37 words
A process according to claim 1 in which component (4) is a polyhalogenated phosphoric acid trialkyl ester wherein said alkyl groups contain at most four carbon atoms and each alkyl group contains 2 or 3 halogen atoms.
Claim 19
Dependent Claim
14 words
A process according to claim 1 in which component (4) is tris-(2,3-dibromo-2-chloro-propyl)-phosphate or tris-(2,3-dibromopropyl)-phosphate.
Claim 20
Dependent Claim
21 words
A process according to claim 1 in which component (1) comprises a tetrakis-(hydroxymethyl)-phosphonium halide, component (2) comprises a compound of formula
Claim 21
Dependent Claim
21 words
A process according to claim 1 in which component (1) is tetrakis-(hydroxymethyl)-phosphonium chloride, component (2) is a compound of the formula
Claim 22
Dependent Claim
15 words
A polyester and cellulose fiber mixture having a flameproof finish formed according to claim 1.
Claim 23
Dependent Claim
12 words
A process according to claim 2 in which tetrakis-(hydroxymethyl)-phosphonium chloride is used.
Claim 24
Dependent Claim
25 words
A process according to claim 3 in which Y is hydrogen or methyl, R1 and R2 each is methyl or ethyl and X is hydrogen.
Claim 25
Dependent Claim
21 words
A process according to claim 3 in which Y is hydrogen, X is hydrogen and R1 and R2 each is methyl.
Claim 26
Dependent Claim
15 words
A polyester and cellulose fiber mixture having a flameproof finish formed according to claim 9.
Claim 27
Dependent Claim
13 words
An aqueous flameproofing preparation for polyester-cellulose fiber mixtures containing as essential flameproofing components
Claim 28
Dependent Claim
13 words
An aqueous flameproofing preparation for polyester-cellulose fiber mixtures containing as essential flame-proofing components
Claim 29
Dependent Claim
13 words
An aqueous flameproofing preparation for polyester-cellulose fiber mixtures containing as essential flame-proofing components
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |