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Polymer based on CTFE/VCA/HFP or TFE/VCA/HFP

A copolymer and carbon-based technology, applied in printing, instruments, books, etc., can solve the problems of unsatisfactory fluoropolymers and insufficient thermomechanical stability of fluoromaterials

Inactive Publication Date: 2005-04-27
ATOFINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the thermomechanical stability of the resulting fluorine-containing materials is not sufficient
[0012] Thus, it can be seen that any fluoropolymers or partially fluoropolymers developed up to now are not entirely satisfactory.

Method used

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  • Polymer based on CTFE/VCA/HFP or TFE/VCA/HFP
  • Polymer based on CTFE/VCA/HFP or TFE/VCA/HFP
  • Polymer based on CTFE/VCA/HFP or TFE/VCA/HFP

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0101] Example 2 - Starting composition: CTFE / VCA / HFP-38.1 / 56.9 / 5 mol

[0102] Operated in a 1.2 liter stainless steel autoclave. To the reactor was charged 311 grams of a solution containing 105.5 grams (ie, 1.22 moles) of VCA and 206 grams (ie, 2.34 moles) of AE. The reactor was then closed and purged three times with 20 bar nitrogen. 95 grams (ie, 0.82 moles) of CTFE were added to the reactor under vacuum by suction, followed by 16.2 grams (ie, 0.11 moles) of HFP. A solution of 3.75 grams (ie 21.23 mmoles) of TBPP initiator in 40.8 grams (ie 0.463 moles) of AE was then added by pump. The reaction medium is heated at 85[deg.] C. for 3 hours with stirring and an initial pressure of about 8 bar.

[0103] After the reaction, the AE solution of the polymer was obtained, and the dry extract was close to 45%. To this solution was added 207 grams of methanol. The polymer-methanol solution mixture was then precipitated in 4 liters of ice water. The precipitated polymer was f...

Embodiment 3

[0105] Example 3 - Starting composition: CTFE / VCA / HFP-37.3 / 55.7

[0106] Follow the same experimental protocol, using the same reactants as in Example 2.

[0107] The starting ratio of reactants was varied in order to increase the proportion of HFP in the final polymer while maintaining the VCA / CTFE molar ratio close to 2 / 3. The molar ratio of initiator compared to the total amount of monomer was kept constant, and the amount of AE was adjusted so that the extract remained constant, close to 45%.

[0108] The amounts of reactants and solvent used were as follows:

[0109] - VCA = 105.5 grams (1.22 moles)

[0110] -CTFE=95 grams (0.82 moles)

[0111] HFP = 23 grams (0.16 moles)

[0112] - Total AE = 269.4 grams (227 grams for dissolved VCA, 42.4 grams for dissolved initiator)

[0113] -TBPP=3.8 g (21.81 mmol)

[0114] 188.8 g of dry polymer were thus obtained in the form of a white powder.

Embodiment 4

[0115] Example 4 - Starting composition: CTFE / VCA / HFP-35.7 / 53.3 / 11 moles

[0116] Follow the same experimental protocol, using the same reactants as in Example 2.

[0117] The starting ratio of reactants was varied in order to increase the proportion of HFP in the final polymer while maintaining the CTFE / VCA molar ratio close to 2 / 3. The molar ratio of initiator compared to the total amount of monomer was kept constant, and the amount of AE was adjusted so that the extract remained constant, close to 45%.

[0118] The amounts of reactants and solvent used were as follows:

[0119] - VCA = 94.35 grams (1.09 moles)

[0120] -CTFE=85 grams (0.73 moles)

[0121] HFP = 33.8 grams (0.23 moles)

[0122] - Total AE = 256.5 grams (dissolved VCA is 217 grams, dissolved initiator is 39.5 grams)

[0123] -TBPP=3.55 g (20.37 mmol)

[0124] 174.8 g of dry polymer were thus obtained in the form of a white powder.

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Abstract

A subject-matter of the invention is a copolymer comprising at least 3 units, P1, P2 and P3, with the following general formulae: with X<1>, X<2 >and X<3>, which are identical or different, taken from the group of atoms consisting of H, F, Cl and Br; with R<1 >taken from the group of atoms consisting of H, F, Cl and Br; with R<2 >a carbonaceous group comprising from 1 to 10 partially or completely fluorinated carbon atoms; with Y<1 >and Y<2>, which are identical or different, taken either from the group of atoms consisting of H, F, Cl and Br or from the family of the carbonaceous groups comprising from 1 to 10 carbon atoms; with Y<3 >a carbonyl group or a divalent carbonaceous group; the content of P2 unit in the copolymer being between 30 and 70 mol % for respectively a content of P1 and P3 units in the copolymer of between 70 and 30 mol % and the weight-average molar mass (Mw) of the said copolymer being between 10<3 >and 10<6 >g / mol. Preferably, the copolymer is of CTFE / VCA / HFP or TFE / VCA / HFP type.

Description

technical field [0001] The object of the present invention is an oligomer, which is a copolymer that enables the preparation of formulations that can be used to produce transparent objects with a glass transition temperature above 60°C, which can be used in particular as visible or near-infrared light Optical waveguide or optical conductor in the region wavelength. The present invention also relates to a method for synthesizing the above-mentioned oligomers. [0002] Advantageously, the copolymer, object of the present invention, is a terpolymer obtained by the copolymerization of: [0003] - vinylene carbonate (VCA), [0004] - Hexafluoropropylene (HFP), and [0005] - Chlorotrifluoroethylene (CTFE) or tetrafluoroethylene (TFE). Background technique [0006] It is very meaningful to design a polymer material with the properties required for making optical fibers. See Anthony R. Blythe and John R. Vinson, "Polymer Materials for Devices in Fiber Optic Systems" (Polymers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00C08F210/02C08F214/00C08F234/02
CPCC08F214/00C08F234/02B42D15/00G09B19/00B42D1/00
Inventor T·帕斯卡尔B·布特文G·科斯托夫A·鲁索J·阿尔里克J·福尼耶
Owner ATOFINA