US3770567A
Expired / Lapsed
US
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Laminates of support material and fluorinated polymer containing pendant side chains containing sulfonyl groups
Assignee: EIDP Inc
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Filing: 1971-11-08
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Granted: 1973-11-06
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Expires: 1991-11-08
Abstract
Abstract A laminate comprising a first layer of fluorinated polymer containing pendant side chains containing sulfonyl groups wherein the sulfonyl groups are in the -(SO3)nMe form wherein Me is a metallic cation or NH4 and n is the valence of Me 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 16:55
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/12; B32B27/28; B32B5/00; B32B5/02; C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2275; C08J5/2281; C08J5/2287; C08J5/2293; B32B2262/00; B32B2262/10; B32B2262/101; B32B2305/00; B32B2305/10; B32B2305/18; B32B2315/00; B32B2315/08; B32B2315/085; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T442/00; Y10T442/30; Y10T442/3854; Y10T442/3878; Y10T442/60; Y10T442/674; Y10T442/677
Claims Analysis
Total Claims: 5
Claim 1
Independent 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 2
Dependent Claim
16 words
The laminate of claim 2 wherein M is F, Me is Na, and n is one.
Claim 3
Dependent Claim
161 words
A laminate comprising a first layer of fluorinated polymer containing pendant side chains 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 form, Q being selected from the group consisting of H, cation of an alkali metal and cation of an alkaline earth metal and m being the valence of Q; a second layer of fluorinated polymer containing pendant side chains containing sulfonyl groups wherein the sulfonyl groups are in the -(SO3)nMe form, Me being a metallic cation or NH4 and n being the valence of Me, said second layer being integral with said first layer; and a third 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 third layer being integral with said second layer and containing support material completely encapsulated therein.
Claim 4
Dependent Claim
26 words
The laminate of claim 7 wherein the support material is selected from the class consisting of fluorinated resin fabric, quartz fabric, glass mat and glass fabric.
Claim 5
Dependent Claim
22 words
The laminate of claim 9 wherein Q is Na, m is 1, Me is Na, n is 1 and M is F.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |