Patent US4942584A successfully refreshed from Google Patents.
Patent US4435533A successfully refreshed from Google Patents.
US4435533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Hydroxy-5-(substituted phosphinyl)ethyleneureas
Assignee: Individual
•
Filing: 1981-07-30
•
Granted: 1984-03-06
•
Expires: 2001-07-30
Abstract
Abstract This invention relates to novel 4-hydroxy-5-(substituted phosphinyl)ethyleneureas of the general Formula I ##STR1## to methods of making the same, to flame resistant compositions containing such compounds and to the use of compositions containing such compounds to impart flame resistance to cellulose and cellulose containing materials. In the compounds of the Formula I X or Y may be hydrogen or alkyl, R 1 and R 2 may be the same or different radicals including alkoxy, cycloalkoxy, aryloxy, arylalkoxy, alkyl, aryl as well as such radicals containing substituents such as halogen; in addition, R 1 and/or R 2 may be hydroxy.
Inventors
- 👤 Alexandros K. Tsolis
- 👤 Ioannis A. Mikroyannidis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:37
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6503; C07F9/6506; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5373; C09; C09K; C09K21/00; C09K21/06; C09K21/12; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/285; D06M13/322; D06M13/402; D06M13/432; D21H5/00; D21H5/0002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
36 words
A compound of the formula: ##STR4## wherein R 1 and R 2 are selected from the group consisting of alkoxy of 1 to 4 carbon atoms, cyclohexyloxy, phenoxy, alkoxy containing chlorine, alkoxy containing bromine and hydroxy.
Claim 2
Dependent Claim
36 words
A compound of the formula: ##STR4## wherein R 1 and R 2 are selected from the group consisting of alkoxy of 1 to 4 carbon atoms, cyclohexyloxy, phenoxy, alkoxy containing chlorine, alkoxy containing bromine and hydroxy.
Claim 3
Dependent Claim
54 words
A compound of the formula: ##STR5## wherein X and Y are both hydrogen or hydrogen and alkyl of 1 to 4 carbon atoms and wherein R 1 and R 2 are selected from the group consisting of alkoxy of 1 to 4 carbon atoms, cyclohexyloxy, phenoxy, alkoxy containing chlorine, alkoxy containing bromine and hydroxy.
Claim 4
Dependent Claim
54 words
A compound of the formula: ##STR5## wherein X and Y are both hydrogen or hydrogen and alkyl of 1 to 4 carbon atoms and wherein R 1 and R 2 are selected from the group consisting of alkoxy of 1 to 4 carbon atoms, cyclohexyloxy, phenoxy, alkoxy containing chlorine, alkoxy containing bromine and hydroxy.
Claim 5
Dependent Claim
60 words
A method of making the compound of claim 1 comprising reacting in a solvent or in solvent mixtures which are substantially non-reactive with the reacting compounds and at a pH 2 to 4 urea with 2-hydroxy-2-(substituted phosphinyl)ethanal of the formula ##STR6## wherein R 1 and R 2 are radicals defined in claim 1, in a mol ratio close to 1.
Claim 6
Dependent Claim
73 words
A method of making the compounds of claim 2 comprising reacting in a solvent or in solvent mixtures which are substantially non-reactive with the reacting compounds and at a pH 2 to 6 monoalkyl urea XNHC(C)NH 2 wherein X is alkyl of 1 to 4 carbon atoms with 2-hydroxy-2-(substituted phosphinyl)ethanals of the formula ##STR7## wherein R 1 and R 2 are radicals defined in claim 2 in a mol ratio close to 1.
Claim 7
Dependent Claim
36 words
A method of fire-proofing a polymeric material selected from the group consisting of cellulose, cellulose containing material, polyamides, polyurethanes, polyesters and polyacrylonitriles, which comprises incorporating into the polymeric material the compounds of claim 1 or 2.
Claim 8
Dependent Claim
17 words
The method of claim 5, wherein the incorporation is carried out in the presence of a solvent.
Claim 9
Dependent Claim
37 words
The method of claim 5, wherein the cellulose of the cellulose containing material is impregnated in alkaline solution, dried, impregnated in an aqueous solution containing an amino plast, an acidic catalyst and a surfactant, dried and cured.
Claim 10
Dependent Claim
13 words
The method of claim 7, wherein the cellulose containing material is cotton fabric.
Claim 11
Dependent Claim
12 words
The method of claim 7, wherein the cellulose containing material is paper.
References Cited (Backward Citations)
US4237122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |