US3627784A
Expired / Lapsed
US
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Heterocyclic phosphorus compounds and process for their manufacture
Assignee: BASF Schweiz AG
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Filing: 1969-12-09
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Granted: 1971-12-14
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Expires: 1989-12-09
Abstract
Abstract Heterocyclic phosphorus compounds with a hetero-ring containing eight ring members, namely two carbon, two nitrogen and two oxygen atoms are provided. These compounds are manufactured by reacting 2 mols of at least one phosphonocarboxylic acid amide with at least 4 mols of anhydrous formaldehyde in the presence of an acid catalyst and in the absence of water. The phosphorous compounds are used for flameproofing and creaseproofing cellulose-containing textile material. They may be optionally used together with an aminoplast precondensate.
Inventors
- 👤 Hermann Nachbur
- 👤 Joerg Kern
- 👤 Arthur Maeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:17
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/547; C07F9/6527
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A phosphorus compound of the formula in which R1 is alkyl, chloroalkyl or allyl with at most four carbon atoms each and X is methyl or hydrogen.
Claim 2
Dependent Claim
17 words
A phosphorus compound according to claim 2 of the formula in which R3 is methyl or ethyl.
Claim 3
Dependent Claim
10 words
A phosphorus compound according to claim 2 of the formula
Claim 4
Dependent Claim
10 words
A phosphorus compound according to claim 2 of the formula
Claim 5
Dependent Claim
10 words
A phosphorus compound according to claim 2 of the formula
Claim 6
Dependent Claim
10 words
A phosphorus compound according to claim 1 of the formula
Claim 7
Dependent Claim
75 words
A process for the manufacture of a phosphorus compound of the formula indicated in claim 1, which comprises reacting a. 2 mols of at least one phosphonocarboxylic acid amide of the formula in which R1, and X have the significance indicated in claim 2, with b. at least 4 mols of anhydrous formaldehyde in the presence of an acid catalyst used to split off water, in the absence of water, at 80* to 150* C.
References Cited (Backward Citations)
US3381062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |