GB585625A - Polymeric materials - Google Patents
Polymeric materialsInfo
- Publication number
- GB585625A GB585625A GB20718/44A GB2071844A GB585625A GB 585625 A GB585625 A GB 585625A GB 20718/44 A GB20718/44 A GB 20718/44A GB 2071844 A GB2071844 A GB 2071844A GB 585625 A GB585625 A GB 585625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heated
- chlorine
- polymer
- air
- article
- 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.)
- Expired
Links
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 3
- 239000000460 chlorine Substances 0.000 abstract 3
- 229910052801 chlorine Inorganic materials 0.000 abstract 3
- 229920000642 polymer Polymers 0.000 abstract 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- -1 Polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000003570 air Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052794 bromium Inorganic materials 0.000 abstract 1
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Polytetrafluoroethylene is heated at a temperature of 50 DEG to 500 DEG C. in an oxidizing atmosphere for at least half an hour and is then formed into an article. The oxidizing atmosphere may be air, oxygen, chlorine, bromine, ozonized air, nitric acid, nitric oxide or nitrogen trioxide. The polymer in the form of powder, flakes or porous lumps may be passed through a heated zone on a conveyer, and films pressed therefrom followed by quenching in water. Alternatively, the article may be first formed and then heated. For example, chips formed by compressing powdered polymer at room temperature are moulded by sintering at 380 DEG C. and the mouldings are heated under pressure in chlorine. Absorbed chlorine may be removed by heating in air. The treatment improves the colour, tensile strength and dielectric strength. The process may be used in insulating wires with fibres and films of the polymer. The products are also useful as insulation in armature slots, commutator segments and V-rings of electric motors, and in sparking-plugs; as a dielectric for condensers; for radio apparatus and in battery separators. Specifications 572,265, 574,688 and 583,418, and U.S.A. Specification 2,230,654 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US920143XA | 1943-10-25 | 1943-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB585625A true GB585625A (en) | 1947-02-13 |
Family
ID=22230822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20718/44A Expired GB585625A (en) | 1943-10-25 | 1944-10-25 | Polymeric materials |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR920143A (en) |
| GB (1) | GB585625A (en) |
-
1944
- 1944-10-25 GB GB20718/44A patent/GB585625A/en not_active Expired
-
1945
- 1945-11-14 FR FR920143D patent/FR920143A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR920143A (en) | 1947-03-28 |
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