US3856736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incorporation of high molecular weight fluorocarbon polymer in arylene sulfide polymer
Assignee: Phillips Petroleum Co
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Filing: 1972-10-19
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Granted: 1974-12-24
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Expires: 1992-10-19
Abstract
Abstract High molecular weight fluorocarbon polymer is incorporated into arylene sulfide polymer coating dispersions by (a) dry milling a pigment with the fluorocarbon polymer and (b) thereafter adding the arylene sulfide polymer and a liquid capable of wetting said fluorocarbon-pigment mixture and subjecting same to intensive milling.
Inventors
- 👤 D Tieszen
- 👤 J Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
C; C09; C09D; C09D181/00; C09D181/02; C08; C08K; C08K3/00; C08K3/18; C08K5/00; C08K5/04; C08K5/05; C08L; C08L27/00; C08L27/02; C08L27/12; C08L81/00; C08L81/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
157 words
A PROCESS FOR FORMING POLY(ARYLENE SULFIDE) COATING DISPERISONS CONSISTING ESSENTIALLY OF THE FOLLOWING STEPS: SUBJECTING FLUOROCARBON POLYMER, IN PARTICULATE FROM HAVING A MOLECULAR WEIGHT SUFFICIENT TO GIVE A MELT VISCOSITY FLOW OF 0 TO 380*C USING A 5000 G. WEIGHT, TO INTENSIVE DRY MILLING BY BALL MILLING OR ROD MILLING WITH A PIGMENT IN PARTICULATE FROM; AND THREAFTER SUBJECTING THE ESULTING MIXTURE TO INTENSIVE MILLING BY BALL MILLING OR ROD MILLING WITH SAID POLY(ARYLENE SULFIDE) POLYMER IN PARTICULATE FORM IN A LIQUID SELECTED FROM WATER, ETHYLENE GLYCOL, OR PROPYLENE GLYCOL, SAID FLUORROCARBON POLYMER BEING PRESENT IN AN AMOUNT WITHIN THE RRANGE OF 0.02 TO 1 PART BY WEIGHT PER 1 PART BY WEIGHT OF SAID PIGMENT, THE RATIO OF SAID POLY(ARYLENE SULFIDE) TO FLUOROCARBON POLYMER BEING WITHIN THE RANGE OF 3:1 TO 30:1 AND, WHEREIN THE TOTAL SOLIDS CONTENT IS WITHIN THE RANGE OF 15 TO 40 WEIGHT PERCENT BSED ON THE TOTAL WEIGHT OF SAID DISPERSION.
Claim 2
Dependent Claim
157 words
A PROCESS FOR FORMING POLY(ARYLENE SULFIDE) COATING DISPERISONS CONSISTING ESSENTIALLY OF THE FOLLOWING STEPS: SUBJECTING FLUOROCARBON POLYMER, IN PARTICULATE FROM HAVING A MOLECULAR WEIGHT SUFFICIENT TO GIVE A MELT VISCOSITY FLOW OF 0 TO 380*C USING A 5000 G. WEIGHT, TO INTENSIVE DRY MILLING BY BALL MILLING OR ROD MILLING WITH A PIGMENT IN PARTICULATE FROM; AND THREAFTER SUBJECTING THE ESULTING MIXTURE TO INTENSIVE MILLING BY BALL MILLING OR ROD MILLING WITH SAID POLY(ARYLENE SULFIDE) POLYMER IN PARTICULATE FORM IN A LIQUID SELECTED FROM WATER, ETHYLENE GLYCOL, OR PROPYLENE GLYCOL, SAID FLUORROCARBON POLYMER BEING PRESENT IN AN AMOUNT WITHIN THE RRANGE OF 0.02 TO 1 PART BY WEIGHT PER 1 PART BY WEIGHT OF SAID PIGMENT, THE RATIO OF SAID POLY(ARYLENE SULFIDE) TO FLUOROCARBON POLYMER BEING WITHIN THE RANGE OF 3:1 TO 30:1 AND, WHEREIN THE TOTAL SOLIDS CONTENT IS WITHIN THE RANGE OF 15 TO 40 WEIGHT PERCENT BSED ON THE TOTAL WEIGHT OF SAID DISPERSION.
Claim 3
Dependent Claim
12 words
A method according to claim 1 wherein said fluorocarbon polymer is polytetrafluoroethylene.
Claim 4
Dependent Claim
16 words
A method according to claim 2 wherein said liquid is water containing a surface active agent.
Claim 5
Dependent Claim
13 words
A method according to claim 3 wherein said poly(arylene sulfide) is polyphenylene sulfide.
Claim 6
Dependent Claim
12 words
A method according to claim 4 wherein said pigment is titanium dioxide.
Claim 7
Dependent Claim
25 words
A method according to claim 4 wherein said pigment, fluorocarbon polymer and poly(arylene sulfide) particles each have a particle size of less than 40 mesh.
Claim 8
Dependent Claim
46 words
A method according to claim 4 wherein the ratio of said polyphenylene sulfide to polytetrafluoroethylene is within the range of 5:1 to 20:1 and the total solids content is within the range of 20 to 40 weight percent based on the total weight of said dispersion.
Claim 9
Dependent Claim
50 words
A method according to claim 4 wherein said intensive dry milling is done by ball or rod milling for a time period of greater than two days and said intensive milling with said liquid is done in a ball or rod mill for a time of greater than 8 hours.
Claim 10
Dependent Claim
27 words
A method according to claim 1 wherein said intensive dry milling is done by ball or rod milling for a time period of greater than 2 days.
Claim 11
Dependent Claim
27 words
A method according to claim 1 wherein said intensive dry milling is done by a vibratory ball milling for a time period of greater than 8 hours.
References Cited (Backward Citations)
US3622376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |