DE2218240A1 - Granuliertes Polytetrafluoräthylenpulver - Google Patents
Granuliertes PolytetrafluoräthylenpulverInfo
- Publication number
- DE2218240A1 DE2218240A1 DE19722218240 DE2218240A DE2218240A1 DE 2218240 A1 DE2218240 A1 DE 2218240A1 DE 19722218240 DE19722218240 DE 19722218240 DE 2218240 A DE2218240 A DE 2218240A DE 2218240 A1 DE2218240 A1 DE 2218240A1
- Authority
- DE
- Germany
- Prior art keywords
- particles
- movement
- secondary particles
- powder
- diameter
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims description 89
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims description 37
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims description 37
- -1 polytetrafluoroethylene Polymers 0.000 title claims description 36
- 239000002245 particle Substances 0.000 claims description 75
- 239000011163 secondary particle Substances 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 21
- 239000011164 primary particle Substances 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 16
- 206010001497 Agitation Diseases 0.000 claims description 10
- 238000013019 agitation Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000009958 sewing Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 20
- 238000005469 granulation Methods 0.000 description 18
- 230000003179 granulation Effects 0.000 description 18
- 238000003756 stirring Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000000523 sample Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 10
- 239000010419 fine particle Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 239000008188 pellet Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229950011008 tetrachloroethylene Drugs 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000007900 aqueous suspension Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011361 granulated particle Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/16—Powdering or granulating by coagulating dispersions
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46023768A JPS5221011B1 (enrdf_load_stackoverflow) | 1971-04-14 | 1971-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2218240A1 true DE2218240A1 (de) | 1972-11-02 |
Family
ID=12119510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722218240 Pending DE2218240A1 (de) | 1971-04-14 | 1972-04-14 | Granuliertes Polytetrafluoräthylenpulver |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5221011B1 (enrdf_load_stackoverflow) |
| DE (1) | DE2218240A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2133673B1 (enrdf_load_stackoverflow) |
| GB (2) | GB1392345A (enrdf_load_stackoverflow) |
| IT (1) | IT951372B (enrdf_load_stackoverflow) |
| NL (1) | NL7205097A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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" |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1497865A (fr) * | 1965-10-26 | 1967-10-13 | Hoechst Ag | Procédé de préparation de poudres améliorées contenant du polytétrafluoréthylène |
-
1971
- 1971-04-14 JP JP46023768A patent/JPS5221011B1/ja active Pending
-
1972
- 1972-04-10 GB GB4716474A patent/GB1392345A/en not_active Expired
- 1972-04-10 GB GB1651572A patent/GB1392344A/en not_active Expired
- 1972-04-13 IT IT2309372A patent/IT951372B/it active
- 1972-04-13 FR FR7212943A patent/FR2133673B1/fr not_active Expired
- 1972-04-14 DE DE19722218240 patent/DE2218240A1/de active Pending
- 1972-04-14 NL NL7205097A patent/NL7205097A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1392344A (en) | 1975-04-30 |
| JPS5221011B1 (enrdf_load_stackoverflow) | 1977-06-08 |
| IT951372B (it) | 1973-06-30 |
| NL7205097A (enrdf_load_stackoverflow) | 1972-10-17 |
| GB1392345A (en) | 1975-04-30 |
| FR2133673B1 (enrdf_load_stackoverflow) | 1974-09-13 |
| FR2133673A1 (enrdf_load_stackoverflow) | 1972-12-01 |
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