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Patent US3671611A successfully refreshed from Google Patents.
US3671611A
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Phosphorus acid esters
Assignee: BASF Schweiz AG
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Filing: 1969-12-23
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Granted: 1972-06-20
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Expires: 1989-12-23
Abstract
Abstract Phosphorus compounds are provided which correspond to the formula IN WHICH EACH R is an alkyl, alkenyl or halogenalkyl radical, X and X'' each is a methyl group or a hydrogen atom, A is a -CO-, CS-, -SO2-, -CNH- or -CO-NE-CO- radical, wherein E is a hydrogen atom or a Y-CH2-O- radical and wherein Y is an alkyl radical or a hydrogen atom. The phosphorus compounds are manufactured from the corresponding phosphorus carboxylic acid amides, a diamide and formaldehyde. These compounds optionally together with a curable aminoplast precondensate are useful for flameproofing and creaseproofing of cellulose-containing fiber materials.
Inventors
- 👤 Hermann Nachbur
- 👤 Arthur Maeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:44
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; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
21 words
A phosphorus compound according to claim 1, wherein R1, R2, R1'' and R2'' are identical and X and X'' are identical.
Claim 2
Dependent Claim
30 words
A phosphorus compound according to claim 1, wherein R1, R2, R1'' and R2'' are identical and X and X'' are identical and A is a -CO-, -CS- or -SO2- radical.
Claim 3
Dependent Claim
44 words
A phosphorus compound according to claim 1, wherein R1, R2, R1'' and R2'' are identical and are methyl or ethyl radicals, A is a -CO-, -CS- or -SO2- radical, Y is a methyl group or a hydrogen atom and X and X'' are hydrogen.
Claim 4
Dependent Claim
17 words
A phosphorus compound according to claim 1, wherein A is a -CO-, -CS-, -CNH- or -CO-NE-CO- radical.
Claim 5
Dependent Claim
21 words
A phosphorus compound according to claim 5, wherein R1, R2, R1'' and R2'' are identical and X and X'' are identical.
Claim 6
Dependent Claim
29 words
A phosphorus compound according to claim 1, wherein R1, R2, R1'' and R2'' are identical and X and X'' are identical and A is a -CO- or -CS- radical.
Claim 7
Dependent Claim
15 words
A phosphorus compound according to claim 4, wherein A is a -CO- or -CS- radical.
Claim 8
Dependent Claim
13 words
A phosphorus compound according to claim 4, wherein A is a -CO- radical.
Claim 9
Dependent Claim
13 words
A phosphorus compound according to claim 1, wherein A is a -SO2- radical.
Claim 10
Dependent Claim
21 words
A phosphorus compound according to claim 10, wherein R1, R2, R1'' and R2'' are identical and X and X'' are identical.
Claim 11
Dependent Claim
13 words
A phosphorus compound according to claim 4, wherein A is a -SO2- radical.
References Cited (Backward Citations)
US3401214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |