US3849243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminates of support material and fluorinated polymer containing pendant side chains containing sulfonyl groups
Assignee: EIDP Inc
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Filing: 1973-08-01
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Granted: 1974-11-19
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Expires: 1993-08-01
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
- 👤 W Grot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:07
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2287; C08J5/2293; B; B32; B32B; B32B27/00; C08J5/2206; C08J5/2275; C08J5/2281; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T442/00; Y10T442/20; Y10T442/2861; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A LAMINATE COMPRISING A FIRST LAYER OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFINYL 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 FORM, Q BEING SELECTED FROM THE GROUP CONSISTING OF H, CATION OF ALKALI METAL, CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AND M BEING THE VALCE 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.
Claim 2
Dependent Claim
117 words
A LAMINATE COMPRISING A FIRST LAYER OF FLUORINATED POLYMER CONTAINING PENDANT SIDE CHAINS CONTAINING SULFINYL 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 FORM, Q BEING SELECTED FROM THE GROUP CONSISTING OF H, CATION OF ALKALI METAL, CATION OF AN ALKALINE EARTH METAL AND COMBINATIONS THEREOF, AND M BEING THE VALCE 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.
Claim 3
Dependent Claim
26 words
The laminate 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 laminate of claim 1 wherein Q is cation of an alkali metal, cation of an alkaline earth metal and combination thereof.
Claim 5
Dependent Claim
9 words
The laminate of claim 2 wherein M is F.
Claim 6
Dependent Claim
13 words
The laminate of claim 4 wherein Q is Na and m is 1.
References Cited (Backward Citations)
US2393967A
Cited
US2773781A
Cited
US3041317A
Cited
US3676290A
Cited
US3692569A
Cited
US3770567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |