IT1187683B - Prodn. of vinylidene fluoride homopolymers and copolymers - Google Patents
Prodn. of vinylidene fluoride homopolymers and copolymersInfo
- Publication number
- IT1187683B IT1187683B IT21471/85A IT2147185A IT1187683B IT 1187683 B IT1187683 B IT 1187683B IT 21471/85 A IT21471/85 A IT 21471/85A IT 2147185 A IT2147185 A IT 2147185A IT 1187683 B IT1187683 B IT 1187683B
- Authority
- IT
- Italy
- Prior art keywords
- partic
- pref
- copolymers
- vinylidene fluoride
- opt
- Prior art date
Links
- 229920001577 copolymer Polymers 0.000 title abstract 4
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 title abstract 3
- 229920001519 homopolymer Polymers 0.000 title abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 abstract 2
- 125000000217 alkyl group Chemical group 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 150000003254 radicals Chemical class 0.000 abstract 2
- 235000011054 acetic acid Nutrition 0.000 abstract 1
- 150000001243 acetic acids Chemical class 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 150000001733 carboxylic acid esters Chemical class 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 235000019253 formic acid Nutrition 0.000 abstract 1
- 150000004674 formic acids Chemical class 0.000 abstract 1
- 239000003999 initiator Substances 0.000 abstract 1
- 150000004672 propanoic acids Chemical class 0.000 abstract 1
- 235000019260 propionic acid Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A process for prodn. of low mol. wt. vinylidene fluoride (I) homopolymers or copolymers with hexafluoropropene (II) or tetrafluoroethylene (III) or mixts. is claimed. Polymerisation is carried out in the presence of a radical initiator (IV) at 20-160 deg.C in a solvent selected from carboxylic acid esters of formula R-COO-R', where R = H or 1-4C alkyl and R' = 1-5C alkyl. Opt. R and/or R' may contain, as substits., an OH gp. or an alkoxy gp. OR'', where R'' = R'. Opt. the copolymer can be additionally vulcanised directly in soln. Opt. the solid polymer is recovered by a pptn. agent. Vinylidene fluoride homopolymers having mol. wts. of 1000-20000, partic. 1000-5000 are also claimed. The copolymers pref. contain 40-95 (partic. 50-85) mole % (I), 0-45 (partic. 15-45) mole % (II) and 0-30 (partic. 0-25) mole % (III). The solvent/polymer wt. ratio is pref. 4:1-10:1 at the end of polymerisation. (IV) is pref. selected from peroxide-type free radical formers (partic. bis-(4-t-Bu-cyclohexyl)-peroxy dicarbonate or t-Bu-peroxide) or azo catalysts (partic. azo-bis-isobutyronitrile). The solvent is pref. selected from an ester of formic, acetic or propionic acids with MeOH, EtOH or t-BuOH.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21471/85A IT1187683B (en) | 1985-07-08 | 1985-07-08 | Prodn. of vinylidene fluoride homopolymers and copolymers |
| EP85306784A EP0176347B1 (en) | 1984-09-24 | 1985-09-24 | Process for preparing vinylidene fluoride homopolymers and its copolymers |
| DE8585306784T DE3584930D1 (en) | 1984-09-24 | 1985-09-24 | METHOD FOR PRODUCING VINYLIDENE FLUORIDE, HOMO- AND COPOLYMERS. |
| US07/004,226 US4739024A (en) | 1984-09-24 | 1987-01-05 | Process for preparing vinylidene fluoride homopolymers and its copolymers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21471/85A IT1187683B (en) | 1985-07-08 | 1985-07-08 | Prodn. of vinylidene fluoride homopolymers and copolymers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8521471A0 IT8521471A0 (en) | 1985-07-08 |
| IT1187683B true IT1187683B (en) | 1987-12-23 |
Family
ID=11182301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT21471/85A IT1187683B (en) | 1984-09-24 | 1985-07-08 | Prodn. of vinylidene fluoride homopolymers and copolymers |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1187683B (en) |
-
1985
- 1985-07-08 IT IT21471/85A patent/IT1187683B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8521471A0 (en) | 1985-07-08 |
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