US4026808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant textile finishes
Assignee: Occidental Chemical Corp
•
Filing: 1974-07-01
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Granted: 1977-05-31
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Expires: 1994-07-01
Abstract
Abstract Normally flammable textile materials are rendered flame retardant by the intimate association therewith of a flame retarding amount of a composition comprising a phosphorus containing N-hydroxy-methyl amide and tetrakis(hydroxymethyl) phosphonium chloride.
Inventors
- 👤 James J. Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
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; C07F9/50; C07F9/53; C07F9/5304; D06M13/285; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
A flame retarding composition comprising tetrakis (hydroxymethyl) phosphonium chloride and a phosphorus containing N-hydroxymethyl amide in a mole ratio from about 1:1 to about 0.05:1, of the formula ##STR8## wherein R is independently selected from substituted and unsubstituted amino and hydrocarbon substituents; R' is independently selected from hydrogen and substituted and unsubstituted hydrocarbon substituents, providing at least one of R and R' has a phosphorus substituent thereon.
Claim 2
Dependent Claim
67 words
A flame retarding composition comprising tetrakis (hydroxymethyl) phosphonium chloride and a phosphorus containing N-hydroxymethyl amide in a mole ratio from about 1:1 to about 0.05:1, of the formula ##STR8## wherein R is independently selected from substituted and unsubstituted amino and hydrocarbon substituents; R' is independently selected from hydrogen and substituted and unsubstituted hydrocarbon substituents, providing at least one of R and R' has a phosphorus substituent thereon.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR9##
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR10##
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR11##
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR12##
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR13##
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR14##
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR15##
Claim 10
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR16##
Claim 11
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR17##
Claim 12
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR18##
Claim 13
Dependent Claim
11 words
The composition of claim 1 wherein said N-hydroxymethyl amide is ##STR19##
References Cited (Backward Citations)
US2832745A
Cited
GB1139380A
Cited
US3577270A
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US3658791A
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US3700403A
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US3658952A
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US3772068A
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US3690941A
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US3699192A
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US3884628A
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US3864076A
Cited
US3796596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |