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 Title: |
US3953566:
Process for producing porous products
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Gore, Robert W.; Newark, DE
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| Assignee: |
W. L. Gore & Associates, Inc., Newark, DE
other patents from W. L. GORE (774265) (approx. 617)
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| Published / Filed: |
1976-04-27
/ 1973-07-03
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| Application Number: |
US1973000376188
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| IPC Code: |
Advanced:
B01D 71/36;
B29C 55/00;
B29C 55/12;
B29C 55/18;
C08J 5/12;
C08J 5/18;
H01B 3/44;
IPC-7:
B29D 7/24;
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| ECLA Code: |
C08J5/18; B01D71/36; B29C55/00B; B29C55/12; B29C55/18; C08J5/12H; H01B3/44D2; L29K27/18; L29K105/04; M08J327/18;
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| U.S. Class: |
Current:
264/505;
264/127;
264/154;
264/175;
264/235.6;
264/288.8;
264/289.3;
264/290.2;
264/567;
264/DIG.070;
428/422;
Original:
264/288;
264/175;
264/210.R;
264/290.R;
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| Field of Search: |
260/29.6 F,2.5
264/191,288,290,188,184,175
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| Priority Number: |
| 1973-07-03 |
US1973000376188 |
| 1970-05-21 |
US1970000039753 |
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| Abstract: |
This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It can be used to produce all kinds of shaped articles such as films, tubes, rods, and continuous filaments. Laminations can be employed and impregnation and bonding can readily be used to produce a large variety of articles. Compressed articles of very high strength can also be produced from these porous forms.
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| Attorney, Agent or Firm: |
Finnegan, Henderson, Farabow & Garrett ;
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| Primary / Asst. Examiners: |
Woo, Jay H.;
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| INPADOC Legal Status: |
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