Patent US4734471A successfully refreshed from Google Patents.
US4734471A
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Method of curing polyfluoroalkoxyphosphazene
Assignee: Albemarle Corp
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Filing: 1986-07-03
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Granted: 1988-03-29
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Expires: 2006-07-03
Abstract
Abstract High molecular weight non cross-linked polyfluoroalkoxyphosphazenes containing some unsaturated groups can be cured (i.e. cross-linked) by contact with a catalyst consisting essentially of platinum, a platinum halide or a haloplatinic acid or their hydrates (e.g. chloroplatinic acid hydrate).
Inventors
- 👤 Suae-Chen Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; B; B01; B01D; B01D71/00; B01D71/06; B01D71/72; C08L; C08L85/00; C08L85/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
52 words
A process for curing a high molecular weight substantially linear polyorganophosphazene having substituent groups bonded to phosphorus, at least a portion of said substituent groups being olefinically unsaturated groups, said process comprising contacting said polyorganophosphazene with a small effective amount of a platinum halide, haloplatinic acid or hydrates thereof or mixtures thereof.
Claim 2
Dependent Claim
52 words
A process for curing a high molecular weight substantially linear polyorganophosphazene having substituent groups bonded to phosphorus, at least a portion of said substituent groups being olefinically unsaturated groups, said process comprising contacting said polyorganophosphazene with a small effective amount of a platinum halide, haloplatinic acid or hydrates thereof or mixtures thereof.
Claim 3
Dependent Claim
13 words
A process of claim 1 conducted in the presence of an alcohol promoter.
Claim 4
Dependent Claim
22 words
A process of claim 1 wherein said olefinically unsaturated groups are selected from olefinically unsaturated aliphatic groups or olefinically unsaturated aromatic groups.
Claim 5
Dependent Claim
21 words
A process of claim 3 wherein said olefinically unsaturated aliphatic groups are alkenyloxy and said olefinically unsaturated aromatic groups are alkenylaryloxy.
Claim 6
Dependent Claim
17 words
A process of claim 4 wherein said alkenyloxy is allyloxy and said alkenylaryloxy is an allylphenoxy group.
Claim 7
Dependent Claim
42 words
A process of claim 1 wherein said polyorganophosphazene consists essentially of a backbone of repeating --(P═N)--units in which the phosphorus substituents are selected from substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy and a portion of said phosphorus substituents contain olefinic unsaturation.
Claim 8
Dependent Claim
16 words
A process of claim 6 wherein said phosphorus substituents comprise a major amount of fluoroalkoxy groups.
Claim 9
Dependent Claim
39 words
A process of claim 7 wherein said fluoroalkoxy groups have the structure: --O--(CH.sub.2).sub.m --(CF.sub.2).sub.n --CF.sub.2 X wherein m is an integer from 1 to 3, n is an integer from 1 to 12 and X is H or F.
Claim 10
Dependent Claim
15 words
A process of claim 8 wherein said phosphorus substituents containing olefinic unsaturation are ortho-allylphenoxy groups.
Claim 11
Dependent Claim
29 words
A process of claim 9 wherein m is 1, X is H and said allylphenoxy group represents about 1 to 10 mole percent of the groups bonded to phosphorus.
Claim 12
Dependent Claim
16 words
A process of claim 6 wherein said phosphorus substituents comprise a major amount of aryloxy groups.
Claim 13
Dependent Claim
34 words
A process of claim 11 wherein said aryloxy groups are selected from phenoxy or substituted phenoxy wherein said substituents are selected from alkyl, alkoxy, polyalkoxy, halo, haloalkyl, alkenoyl, alkenoyloxy, alkenoylyl, alkenoyloxy or combinations thereof.
Claim 14
Dependent Claim
15 words
A process of claim 12 wherein said phosphorus substituents containing olefinic unsaturation are allylphenoxy groups.
Claim 15
Dependent Claim
17 words
A process of claim 13 wherein said phosphorus substituents comprise phenoxy groups, alkylphenoxy groups and ortho-allylphenoxy groups.
Claim 16
Dependent Claim
29 words
A process of claim 14 wherein said phosphorus substituents comprise about 30-60 mole percent phenoxy groups, about 30-60 mole percent para-ethylphenoxy groups and about 1-20 mole percent 2-allyphenoxy groups.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |