US4073754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer alloys of phosphonylated polystyrene or polyphenylene oxide with cellulose ester, polystyrene, or unsaturated polyester
Assignee: Individual
•
Filing: 1975-08-14
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Granted: 1978-02-14
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Expires: 1995-08-14
Abstract
Abstract Polymer alloys of a phosphorus-containing polymer component having the formula: ##STR1## WHEREIN X is hydrogen or halo; Z and Z' are each hydrogen or a phosphonate group PO(OR)(OR 1 ) in which R and R 1 are each alkyl or aryl, but are not both hydrogen, Y is a bivalent radical from an ethylenically unsaturated monomer copolymerized with styrene, and m, m', n, n' and p are zero or integers as specified; and a second polymer component compatible with and alloyed with the phosphorus-containing polymer component, the second component being a cellulose ester, or a polystyrene or unsaturated polyester resin. Polymer alloys thus constituted are particularly useful as fire-retardant and flame-resistant materials, and as membranes useful in the separation of solvents exhibiting differential permeabilities therethrough.
Inventors
- 👤 Israel Cabasso
- 👤 Joseph Jagur-Grodzinski
- 👤 David Vofsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:50
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/12; B; B01; B01D; B01D71/00; B01D71/06; B01D71/28; B01D71/281; B01D71/76; B01D71/82; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/18; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L67/00; C08L85/00; C08L85/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S521/00; Y10S521/907; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
A polymer alloy of a. a phosphorus-containing polymer component having the formula: ##STR23## wherein X is hydrogen or halo; Z and Z' are each hydrogen or a phosphonate group PO(OR)(OR 1 ) in which R and R 1 may be the same or different and are each alkyl or aryl, and in which Z and Z' are not both hydrogen; Y is a bivalent radical from an ethylenically unsaturated monomer copolymerized with styrene; m is zero or an integer less than 10; m' is an integer less than 10; n is any integer; n' is zero or any integer; and p is an integer greater than 10; and b. a second polymer component compatible with and alloyed with the phosphorus-containing polymer component, said second component being a cellulose ester, or a polystyrene or unsaturated polyester resin.
Claim 2
Dependent Claim
136 words
A polymer alloy of a. a phosphorus-containing polymer component having the formula: ##STR23## wherein X is hydrogen or halo; Z and Z' are each hydrogen or a phosphonate group PO(OR)(OR 1 ) in which R and R 1 may be the same or different and are each alkyl or aryl, and in which Z and Z' are not both hydrogen; Y is a bivalent radical from an ethylenically unsaturated monomer copolymerized with styrene; m is zero or an integer less than 10; m' is an integer less than 10; n is any integer; n' is zero or any integer; and p is an integer greater than 10; and b. a second polymer component compatible with and alloyed with the phosphorus-containing polymer component, said second component being a cellulose ester, or a polystyrene or unsaturated polyester resin.
Claim 3
Dependent Claim
39 words
The polymer alloy of claim 1, wherein at least one of the X and X' moieties of component (a) is a phosphonate group in which R and R 1 are each alkyl having from 1 to 3 carbon atoms.
Claim 4
Dependent Claim
12 words
The polymer alloy of claim 1, wherein the X moiety is bromo.
Claim 5
Dependent Claim
15 words
The polymer alloy of claim 1, wherein component (a) is a polymer of Formula I.
Claim 6
Dependent Claim
15 words
The polymer alloy of claim 1, wherein component (a) is a polymer of Formula II.
Claim 7
Dependent Claim
18 words
The polymer alloy of claim 5, wherein Y is CH 2 CHCl or CH 2 CCl 2 .
Claim 8
Dependent Claim
10 words
The polymer alloy of claim 5, wherein m is zero.
Claim 9
Dependent Claim
48 words
The polymer alloy of claim 1, wherein from 93 to 98 percent of the benzylic halogen groups on the aromatic moiety of polymeric component (a) are phosphonylated, and in which components (a) and (b) are cross-linked and chemically bonded to one another through the halogenated benzylic moieties thereon.
Claim 10
Dependent Claim
21 words
A non-flammable or self-extinguishable fiber, film, fabric or shaped or foamed plastic article, constituted of the polymer alloy of claim 1.
References Cited (Backward Citations)
US3864289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |