US5670569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked molding compositions comprising polyarylene sulfides and polyarylene sulfoxides, process for their preparation and their use
Assignee: TEXAS-PAN AMERICAN FOUNDATION UNIVERSITY OF
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Filing: 1995-12-22
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Granted: 1997-09-23
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Expires: 2015-12-22
Abstract
Abstract Mixtures comprising polyarylene sulfides and polyarylene sulfoxides or partially oxidized polyarylene sulfides containing sulfoxide groups can be thermally crosslinked in a targeted manner depending on sulfoxide content. A process for producing crosslinked polyarylene sulfide moldings is based on the use of the mixtures in the thermal shaping.
Inventors
- 👤 Helmut Scheckenbach
- 👤 Andreas Schleicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:44
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
69 words
A polymer mixture comprising (A) from 1 to 99% by weight of at least one polyarylene sulfide consisting essentially of (--S--A--) as repeating units in said polyarylene sulfide, and (B) from 1 to 99% by weight of at least one polyarylene sulfoxide consisting essentially of (--SO--A--) as repeating units in said polyarylene sulfoxide, both calculated on total weight of the polymer mixture and wherein A is an arylene radical.
Claim 2
Dependent Claim
69 words
A polymer mixture comprising (A) from 1 to 99% by weight of at least one polyarylene sulfide consisting essentially of (--S--A--) as repeating units in said polyarylene sulfide, and (B) from 1 to 99% by weight of at least one polyarylene sulfoxide consisting essentially of (--SO--A--) as repeating units in said polyarylene sulfoxide, both calculated on total weight of the polymer mixture and wherein A is an arylene radical.
Claim 3
Dependent Claim
21 words
The mixture as claimed in claim 1, wherein the proportion of the component (A) is from 2.5 to 98.5% by weight.
Claim 4
Dependent Claim
21 words
The mixture as claimed in claim 1, wherein the proportion of the component (A) is from 5 to 98% by weight.
Claim 5
Dependent Claim
21 words
The mixture as claimed in claim 1, wherein the proportion of the component (B) is from 1.5% to 97.5% by weight.
Claim 6
Dependent Claim
21 words
The mixture as claimed in claim 1, wherein the proportion of the component (B) is from 2 to 95% by weight.
Claim 7
Dependent Claim
18 words
The mixture as claimed in claim 1, wherein the component (A) is a linear or branched polyphenylene sulfide.
Claim 8
Dependent Claim
18 words
The mixture as claimed in claim 1, wherein the component (B) is a linear or branched polyphenylene sulfoxide.
Claim 9
Dependent Claim
32 words
The mixture as claimed in claim 11, which contains a thermal stabilizer, a UV stabilizer, antistatic agent, a flame retardant, a pigment, an inorganic filler, an organic filler or a mixture thereof.
Claim 10
Dependent Claim
32 words
The mixture as claimed in claim 1, wherein the mean particle size D 50 of the component (B) of the mixture is in the range from 0.3×10 -6 to 500×10 -6 m.
Claim 11
Dependent Claim
32 words
The mixture as claimed in claim 1, wherein the mean particle size D 50 of the component (B) of the mixture is in the range from 1×10 -6 to 300×10 -6 m.
Claim 12
Dependent Claim
32 words
The mixture as claimed in claim 1, wherein the mean particle size D 50 of the component (B) of the mixture is in the range from 10×10 -6 to 200×10 -6 m.
Claim 13
Dependent Claim
60 words
A polymer mixture comprising (A) from 1 to 99% by weight of at least one polyarylene sulfide consisting essentially of (--S--A--) as repeating units in said polyarylene sulfide, and (B) from 1 to 99% by weight of at least one partially oxidized polyarylene sulfoxide, both calculated on total weight of the polymer mixture and wherein A is an arylene radical.
Claim 14
Dependent Claim
60 words
A polymer mixture comprising (A) from 1 to 99% by weight of at least one polyarylene sulfide consisting essentially of (--S--A--) as repeating units in said polyarylene sulfide, and (B) from 1 to 99% by weight of at least one partially oxidized polyarylene sulfoxide, both calculated on total weight of the polymer mixture and wherein A is an arylene radical.
Claim 15
Dependent Claim
31 words
A process for preparing a crosslinked or partially crosslinked molding composition, which comprises heating the mixture as claimed in claim 1 to temperatures in the range from 280° to 400° C.
Claim 16
Dependent Claim
22 words
The process as claimed in claim 13, wherein the mixture is heated to temperatures in the range from 280° to 380° C.
Claim 17
Dependent Claim
31 words
A process for preparing a crosslinked or partially crosslinked molding composition, which comprises heating the mixture as claimed in claim 12 to temperatures in the range from 280° to 400° C.
Claim 18
Dependent Claim
22 words
The process as claimed in claim 15, wherein the mixture is heated to temperatures in the range from 280° to 380° C.
Claim 19
Dependent Claim
29 words
A method for preparing a crosslinked or partially crosslinked shaped molding comprising polyarylene sulfide by shaping the polymer mixture as claimed in claim 1 to obtain said shaped molding.
Claim 20
Dependent Claim
29 words
A method for preparing a crosslinked or partially crosslinked shaped molding comprising polyarylene sulfide by shaping the polymer mixture as claimed in claim 12 to obtain said shaped molding.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-22 | 2001-03-24 | 2001-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-22 | 2005-03-24 | 2005-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-22 | 2009-03-24 | 2009-09-23 | $7700.00 | Window Closed / Lapsed |