US3902947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing laminates of support material and fluorinated polymer containing pendant side chains containing sulfonyl groups
Assignee: EIDP Inc
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Filing: 1974-06-24
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Granted: 1975-09-02
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Expires: 1994-06-24
Abstract
Abstract A laminate comprising a first layer of fluorinated polymer containing pendant side chains containing sulfonyl groups wherein a majority of the sulfonyl groups are in the -(SO2NH)mQ form wherein Q is H, cation of an alkali metal, cation of an alkaline earth metal or combination thereof and m is the valence of Q, and a second layer of fluorinated polymer containing pendant side chains containing sulfonyl groups wherein the sulfonyl groups are in the -SO2M form wherein M is a halogen atom, said second layer being integral with said first layer and containing support material completely encapsulated therein; and a process for preparing such; said laminate being useful as an intermediate for an ion exchange membrane.
Inventors
- 👤 Walther Gustav Grot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/28; B32B27/286; C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C08J5/2231; C08J5/2237; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46; C25B13/00; C25B13/04; C25B13/08; B32B2305/00; B32B2305/10; B32B2305/18; B32B2309/00; B32B2309/12; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
319 words
A PROCESS FOR PREPARING A LAMINATE COMPRISING A FIRST LAYER OF A FLUORINATED POLYMER CONTAINING SULFONYL GROUPS WHICH ARE ATTACHED TO CARBON ATOMS WHICH HAVE AT LEAST ONE FLUORINE ATOM ATTACHED THERETO WHEREIN A MAJORITY OF THE SULFONYL GROUPS ARE IN THE -(SO2NH)MQ FROM, Q BEING SELECTED FROM THE GROUP CONSISTING OF H, CATION OF AN ALKALI METAL, CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AN M BEING THE VALENCE OF Q AN A SECOND LAYER OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFONYL GROUPS WHEREIN THE SULFONYL GROUPS ARE IN THESO2M FORM WHEREIN M IS A HALOGEN ATOM, SAID SECOND LAYER BEING INTEGRAL WITH SAID FIRST LAYER AND CONTAINING SUPPORT MATERIAL COMPLETELY ENCAPSULATED THEREIN WHICH PROCESS COMPRISES (1) CONTACTING AN -SO2M SURFACE OF A FILM OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFONYL GROUPS WITH A SUPPORT MATERIAL, SAID FILM BEING INTEGRAL AND HAVING (A) THE SULFONYL GROUPS OF ONE SURFACE OF SAID FILM IN THE -SO2M FORM WHEREIN M IS A HALOGEN ATOM, (B) THE SULFONYL GROUPS OF THE OTHER SURFACE OF THE FILM ATTACHED TO CARBON ATOMS WHICH HAVE AT LEAST ONE FLUORINE ATOM ATTACHED THERETO, A MAJORITY OF SAID SULFONYL GROUPS BEING IN THE -(SO2NH)MQ FORM WHEREIN Q IS H, CATION OF AN ALKALI METAL OR CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AND M IS THE VALENCE OF Q, AND (2) APPLYING A DIFFERENTIAL PRESSURE TO THE CONTACTED SUPPORT MATERIAL AND FILM, THE PRESSURE ON THE OPPOSITE SURFACE OF THE SUPPORT MATERIAL FROM THAT WHICH IS CONTACTING SAID FLUORINATED POLYMER FILM BEING AT LEAST 5 INCHES OF MERCURY LESS THAN THE PRESSURE ON THE SURFACE OF THE FLUORINATED POLYMER FILM OPPOSITE TO THAT CONTACTING THE SUPPORT MATERIAL FOR A SUFFICIENT PERIDO OF TIME TO CAUSE THE SUPPORT MATERIAL TO BECOME COMPLETELY ENCAPSULATED WITHIN THE FILM OF FLUORINATED POLYMER WHILE HEATING THE FILM AND SUPPORT MATERIAL AT FROM 240*-320*C.
Claim 2
Dependent Claim
319 words
A PROCESS FOR PREPARING A LAMINATE COMPRISING A FIRST LAYER OF A FLUORINATED POLYMER CONTAINING SULFONYL GROUPS WHICH ARE ATTACHED TO CARBON ATOMS WHICH HAVE AT LEAST ONE FLUORINE ATOM ATTACHED THERETO WHEREIN A MAJORITY OF THE SULFONYL GROUPS ARE IN THE -(SO2NH)MQ FROM, Q BEING SELECTED FROM THE GROUP CONSISTING OF H, CATION OF AN ALKALI METAL, CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AN M BEING THE VALENCE OF Q AN A SECOND LAYER OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFONYL GROUPS WHEREIN THE SULFONYL GROUPS ARE IN THESO2M FORM WHEREIN M IS A HALOGEN ATOM, SAID SECOND LAYER BEING INTEGRAL WITH SAID FIRST LAYER AND CONTAINING SUPPORT MATERIAL COMPLETELY ENCAPSULATED THEREIN WHICH PROCESS COMPRISES (1) CONTACTING AN -SO2M SURFACE OF A FILM OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFONYL GROUPS WITH A SUPPORT MATERIAL, SAID FILM BEING INTEGRAL AND HAVING (A) THE SULFONYL GROUPS OF ONE SURFACE OF SAID FILM IN THE -SO2M FORM WHEREIN M IS A HALOGEN ATOM, (B) THE SULFONYL GROUPS OF THE OTHER SURFACE OF THE FILM ATTACHED TO CARBON ATOMS WHICH HAVE AT LEAST ONE FLUORINE ATOM ATTACHED THERETO, A MAJORITY OF SAID SULFONYL GROUPS BEING IN THE -(SO2NH)MQ FORM WHEREIN Q IS H, CATION OF AN ALKALI METAL OR CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AND M IS THE VALENCE OF Q, AND (2) APPLYING A DIFFERENTIAL PRESSURE TO THE CONTACTED SUPPORT MATERIAL AND FILM, THE PRESSURE ON THE OPPOSITE SURFACE OF THE SUPPORT MATERIAL FROM THAT WHICH IS CONTACTING SAID FLUORINATED POLYMER FILM BEING AT LEAST 5 INCHES OF MERCURY LESS THAN THE PRESSURE ON THE SURFACE OF THE FLUORINATED POLYMER FILM OPPOSITE TO THAT CONTACTING THE SUPPORT MATERIAL FOR A SUFFICIENT PERIDO OF TIME TO CAUSE THE SUPPORT MATERIAL TO BECOME COMPLETELY ENCAPSULATED WITHIN THE FILM OF FLUORINATED POLYMER WHILE HEATING THE FILM AND SUPPORT MATERIAL AT FROM 240*-320*C.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the support material is selected from the class consisting of fluorinated resin fabric, quartz fabric, glass mat and glass fabric.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein Q is cation of an alkali metal, cation of an alkaline earth metal and combinations thereof.
Claim 5
Dependent Claim
9 words
The process of claim 3 wherein M is F.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein Q is a Na ion and m is 1.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |