US6025440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture of fluoropolymers, oxidized polyarylene sulfides and polyarylene, sulfides
Assignee: VENUS KUNSTSTOFF & CO KG GmbH
•
Filing: 1997-12-18
•
Granted: 2000-02-15
•
Expires: 2017-12-18
Abstract
Abstract A blend of at least one fluorine polymer, at least one oxidized polyarylene sulfide, at least one polyarylene sulfide and, if required, conventional additives results in a reduction in the expulsion of the oxidized polyarylene sulfides in gaseous form in the production of shaped articles from this blend, so that no cracks occur in the shaped article and problem-free processing by a cutting method is permitted.
Inventors
- 👤 Helmut Scheckenbach
- 👤 Gregor Buche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1012; C08; C08L; C08L81/00; C08L81/06; C08J; C08J5/00; C08J5/18; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C08L2203/00; C08L2203/16; C08L2205/00; C08L2205/02; C08L2205/03; C08L81/04; C09K2200/00; C09K2200/06; C09K2200/0615; C09K2200/0635; C09K2200/0637; Y; Y10; Y10S; Y10S525/00; Y10S525/906
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A polymer blend comprising A) at least one fluorine polymer in an amount of from 0.5 to 99% by weight, B) at least one oxidized polyarylene sulfide in an amount of from 0.5 to 99% by weight, C) at least one polyarylene sulfide in an amount of from 0.1 to 10% by weight and D) if required, conventional additives, the sum of the components A) to C) always being 100% by weight, and wherein component B) is selected from polyarylene sulfones, polyarylene sulfide sulfoxide sulfones, polyarylene sulfoxide sulfones and polyarylene sulfide sulfones, and wherein component B) is present in an amount such that during processing of the blend no expulsion of gaseous fractions occurs.
Claim 2
Dependent Claim
114 words
A polymer blend comprising A) at least one fluorine polymer in an amount of from 0.5 to 99% by weight, B) at least one oxidized polyarylene sulfide in an amount of from 0.5 to 99% by weight, C) at least one polyarylene sulfide in an amount of from 0.1 to 10% by weight and D) if required, conventional additives, the sum of the components A) to C) always being 100% by weight, and wherein component B) is selected from polyarylene sulfones, polyarylene sulfide sulfoxide sulfones, polyarylene sulfoxide sulfones and polyarylene sulfide sulfones, and wherein component B) is present in an amount such that during processing of the blend no expulsion of gaseous fractions occurs.
Claim 3
Dependent Claim
49 words
The polymer blend as claimed in claim 1, containing the component A) in an amount of from 10 to 98% by weight, the component B) in an amount of from 2 to 90% by weight, and the component C) in an amount of from 1 to 10% by weight.
Claim 4
Dependent Claim
49 words
The polymer blend as claimed in claim 1, containing the component A) in an amount of from 30 to 95% by weight, the component B) in an amount of from 5 to 70% by weight, and the component C) in an amount of from 2 to 7.5% by weight.
Claim 5
Dependent Claim
25 words
The polymer blend as claimed in claim 1, wherein the components B) and C) have a mean particle size of from 0.3 to 500 μm.
Claim 6
Dependent Claim
25 words
The polymer blend as claimed in claim 1, wherein the components B) and C) have a mean particle size of from 1 to 100 μm.
Claim 7
Dependent Claim
16 words
The polymer blend as claimed in claim 1, wherein said polyarylene sulfide C) is polyphenylene sulfide.
Claim 8
Dependent Claim
27 words
The polymer blend as claimed in claim 1, wherein at least 10% of the sulfide bridges of said oxidized polyarylene sulfide have been converted into sulfonyl bridges.
Claim 9
Dependent Claim
27 words
The polymer blend as claimed in claim 1, wherein at least 30% of the sulfide bridges of said oxidized polyarylene sulfide have been converted into sulfonyl bridges.
Claim 10
Dependent Claim
27 words
The polymer blend as claimed in claim 1, wherein at least 60% of the sulfide bridges of said oxidized polyarylene sulfide have been converted into sulfonyl bridges.
Claim 11
Dependent Claim
37 words
The polymer blend as claimed in claim 1, wherein said conventional additives D) are selected from the group consisting of heat stabilizers, UV stabilizers, antistatic agents, flameproofing agents, dyes, pigments, inorganic fillers, organic fillers and lubricant additives.
Claim 12
Dependent Claim
24 words
The polymer blend as claimed in claim 1 having a form selected from the group consisting of shaped articles, films, fibers and peel films.
Claim 13
Dependent Claim
32 words
The polymer blend as claimed in claim 11, wherein the form of said polymer blend is used for the production of bearing materials, seals, circuit boards, clip carriers and other shaped articles.
References Cited (Backward Citations)
US5721282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |