FR2404015A1 - Procede perfectionne de preparation de particules agglomerees de polymere granulaire et tetrafluoroethylene - Google Patents
Procede perfectionne de preparation de particules agglomerees de polymere granulaire et tetrafluoroethyleneInfo
- Publication number
- FR2404015A1 FR2404015A1 FR7826941A FR7826941A FR2404015A1 FR 2404015 A1 FR2404015 A1 FR 2404015A1 FR 7826941 A FR7826941 A FR 7826941A FR 7826941 A FR7826941 A FR 7826941A FR 2404015 A1 FR2404015 A1 FR 2404015A1
- Authority
- FR
- France
- Prior art keywords
- tetrafluoroethylene
- preparation
- agglomerated particles
- granular polymer
- perfected process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
Abstract
L'invention se rapporte aux matériaux polymères. Elle concerne un procédé de traitement des agglomérats trop grossiers produits pendant l'agglomération (en 1) de petites particules de polymère granulaire de tétrafluoroéthyle, selon lequel on agite, dans des conditions appropriées, ces agglomérats trop grossiers avec de l'eau, par exemple dans une pompe 18, afin de les subdiviser en agglomérats d'une grosseur réduite. Utilisation par les producteurs de polymère granulaires de tétrafluoroéthylène.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/835,806 US4123606A (en) | 1977-09-21 | 1977-09-21 | Deagglomeration process |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2404015A1 true FR2404015A1 (fr) | 1979-04-20 |
FR2404015B1 FR2404015B1 (fr) | 1985-07-12 |
Family
ID=25270513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7826941A Expired FR2404015B1 (fr) | 1977-09-21 | 1978-09-20 | Procede perfectionne de preparation de particules agglomerees de polymere granulaire et tetrafluoroethylene |
Country Status (7)
Country | Link |
---|---|
US (1) | US4123606A (fr) |
JP (1) | JPS5454156A (fr) |
DE (1) | DE2841149C3 (fr) |
FR (1) | FR2404015B1 (fr) |
GB (1) | GB2004896B (fr) |
IT (1) | IT1202776B (fr) |
NL (1) | NL190287C (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4241137A (en) * | 1977-11-22 | 1980-12-23 | Daikin Kogyo Co., Ltd. | Process for preparing polytetrafluoroethylene granular powder |
JPS5618624A (en) * | 1979-07-24 | 1981-02-21 | Daikin Ind Ltd | Production of filled polytetrafluoroethylene fine powder |
NL8003949A (nl) * | 1980-07-09 | 1982-02-01 | Electrochem Energieconversie | Werkwijze voor de vervaardiging van een laag van een elektrode voor een cel, in het bijzonder voor een brandstofcel. |
DE3135598A1 (de) * | 1981-09-09 | 1983-03-17 | Hoechst Ag, 6000 Frankfurt | "kontinuierliches verfahren zur agglomerierung von ptee-pulvern im fluessigen medium und damit gewonnenes modifiziertes ptee-pulver" |
JPS63159438A (ja) * | 1986-12-22 | 1988-07-02 | Daikin Ind Ltd | テトラフルオロエチレン系共重合体粉末の製法 |
JP3000609B2 (ja) * | 1990-03-08 | 2000-01-17 | ダイキン工業株式会社 | ポリテトラフルオロエチレン粒状粉末の製法 |
JPH03259926A (ja) * | 1990-03-08 | 1991-11-20 | Daikin Ind Ltd | ポリテトラフルオロエチレン粒状粉末の製法 |
US5977295A (en) * | 1990-03-12 | 1999-11-02 | Daikin Industries, Ltd | Continuous process for preparing polytetrafluoroethylene wet powder |
US5709944A (en) * | 1992-02-05 | 1998-01-20 | Daikin Industries, Ltd. | Polytetrafluoroethylene molding powder |
WO1993016126A1 (fr) * | 1992-02-05 | 1993-08-19 | Daikin Industries, Ltd. | Polytetrafluoroethylene pulverulent destine au moulage |
JPH0743775U (ja) * | 1993-07-26 | 1995-09-12 | 株式会社ヨネイ | 皺付き片面自己粘着性防音及び防振材 |
JPH0952955A (ja) * | 1995-08-11 | 1997-02-25 | Daikin Ind Ltd | 変性ポリテトラフルオロエチレン粒状粉末の製法 |
DE19547909A1 (de) * | 1995-12-21 | 1997-06-26 | Dyneon Gmbh | Verfahren zur Nachbehandlung von thermoplastischen Fluorpolymeren |
CN101119795B (zh) | 2002-10-09 | 2011-02-23 | 诺维信公司 | 一种改进粒子组合物的方法 |
US20040130968A1 (en) * | 2002-10-09 | 2004-07-08 | Novozymes A/S | Method for improving particle compositions |
BRPI0709627A2 (pt) * | 2006-03-22 | 2011-07-26 | Basf Se | processo e dispositivo para a granulaÇço de massas fundidas polimÉricas |
WO2012158644A1 (fr) * | 2011-05-13 | 2012-11-22 | E. I. Du Pont De Nemours And Company | Technique de mise en suspension pour produire des composites de polymère fluoré |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766133A (en) * | 1963-09-09 | 1973-10-16 | Du Pont | Polytetrafluoroethylene filled and unfilled molding powders and theirpreparation |
GB1428838A (en) * | 1972-07-29 | 1976-03-17 | Daikin Ind Ltd | Polytetrafluoroethylene granular powder and process for preparing the same |
FR2307007A1 (fr) * | 1975-04-11 | 1976-11-05 | Du Pont | Procede pour reduire la perte de charge durant l'agglomeration de polytetrafluoroethylene |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3087921A (en) * | 1958-09-02 | 1963-04-30 | Du Pont | Polytetrafluoroethylene molding powder |
US3115486A (en) * | 1960-11-30 | 1963-12-24 | Du Pont | Process for the preparation of polytetrafluoroethylene molding powder |
US3366615A (en) * | 1964-09-16 | 1968-01-30 | Allied Chem | Method for agglomerating granular polytetrafluoroethylene |
US3527857A (en) * | 1965-10-26 | 1970-09-08 | Hoechst Ag | Process for preparing polytetrafluoroethylene-containing powder |
US3781258A (en) * | 1968-09-11 | 1973-12-25 | Daikin Ind Ltd | Polytetrafluoroethylene powder and method of preparation thereof |
-
1977
- 1977-09-21 US US05/835,806 patent/US4123606A/en not_active Expired - Lifetime
-
1978
- 1978-09-19 JP JP11418078A patent/JPS5454156A/ja active Granted
- 1978-09-20 NL NLAANVRAGE7809580,A patent/NL190287C/xx not_active IP Right Cessation
- 1978-09-20 GB GB7837501A patent/GB2004896B/en not_active Expired
- 1978-09-20 FR FR7826941A patent/FR2404015B1/fr not_active Expired
- 1978-09-20 IT IT27899/78A patent/IT1202776B/it active
- 1978-09-21 DE DE2841149A patent/DE2841149C3/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766133A (en) * | 1963-09-09 | 1973-10-16 | Du Pont | Polytetrafluoroethylene filled and unfilled molding powders and theirpreparation |
GB1428838A (en) * | 1972-07-29 | 1976-03-17 | Daikin Ind Ltd | Polytetrafluoroethylene granular powder and process for preparing the same |
FR2307007A1 (fr) * | 1975-04-11 | 1976-11-05 | Du Pont | Procede pour reduire la perte de charge durant l'agglomeration de polytetrafluoroethylene |
Also Published As
Publication number | Publication date |
---|---|
JPH0160049B2 (fr) | 1989-12-20 |
NL190287B (nl) | 1993-08-02 |
DE2841149C3 (de) | 1993-12-02 |
DE2841149C2 (fr) | 1987-03-19 |
GB2004896B (en) | 1982-03-10 |
GB2004896A (en) | 1979-04-11 |
IT7827899A0 (it) | 1978-09-20 |
US4123606A (en) | 1978-10-31 |
FR2404015B1 (fr) | 1985-07-12 |
NL7809580A (nl) | 1979-03-23 |
JPS5454156A (en) | 1979-04-28 |
IT1202776B (it) | 1989-02-09 |
NL190287C (nl) | 1994-01-03 |
DE2841149A1 (de) | 1979-03-29 |
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