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Block polymer containing perfluoropolyether structure

A technology of block polymer and perfluoropolyether, applied in the field of organic polymer compounds, can solve problems such as no block polymer

Active Publication Date: 2020-02-18
ZHEJIANG RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is no report of the block polymer containing the perfluoropolyether structure shown in the structural formula (I) described in the application, and there is no block polymer containing the perfluoropolyether structure shown in the structural formula (I). Report on the Preparation Method of Segment Polymer

Method used

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  • Block polymer containing perfluoropolyether structure
  • Block polymer containing perfluoropolyether structure
  • Block polymer containing perfluoropolyether structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Vacuumize a 100 ml Schlenk reaction bottle with a branched mouth equipped with magnets, bake the bottle with an electric heat gun for 3 minutes under vacuum, cool to room temperature (about 25°C), replace it with nitrogen three times, and finally fill the bottle with 0.1MPa nitrogen. The reaction was placed in a constant temperature magnetic water bath with a set polymerization temperature (20°C). Add about 0.4 g of potassium hydride stored in mineral oil into the bottle, wash off the mineral oil with 5 mL of dry tetrahydrofuran each time, for a total of three times, then drain the solvent, and accurately weigh the mass of potassium hydride to obtain 2.95 mmol (0.1183 g) of dried potassium hydride. Add bishydroxyl-terminated Z-type perfluoropolyether (PFPE) into the bottle —R a —, —R a ’—both are -CH 2 CH 2 O-structure, x=8, y=7) 1.5 g, reacted for 3 hours. Add 10 mL of 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl acrylate into the bottle, bulk poly...

Embodiment 2

[0078] The polymerization conditions are the same as in Example 1, except that the polymerization temperature is adjusted from 20°C to 55°C, potassium hydride (2.95mmol) is changed to dimethyl sulfoxide-potassium complex (2.52mmol), and double hydroxyl end-capped Z-type PFPE1. 5g is changed to monohydroxyl-terminated K-type PFPE ( R f — for CF 3 CF 2 CF 2 -, w=5) 0.95g, the polymerization was changed from bulk polymerization to solution polymerization, using 10mL of tetrahydrofuran / methyl perfluorobutyl ether mixture (volume ratio 1:9), and the polymerization monomer was from 3,3,4,4 ,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl acrylate (10mL) was changed to 2,2,2-trifluoroethylmethyl Acrylate (5 mL). 3.65 g of polymer was obtained with a conversion rate of 53%.

[0079] After testing, the obtained polymer is Its n value is 6 and its number average molecular weight is 2000.

Embodiment 3

[0081] The polymerization conditions are the same as in Example 1, only the polymerization temperature is adjusted from 20°C to 40°C, potassium hydride (2.95mmol) is changed to dimethyl sulfoxide-sodium complex (2.19mmol), and double hydroxyl end-capped Z-type PFPE1. 5g is changed to monohydroxyl-terminated K-type PFPE ( R f — for CF 3 CF 2 CF 2 -, w=13) 4.80g, the polymerization is changed from bulk polymerization to solution polymerization, using 20mL of ethyl perfluorobutyl ether, and the polymerization monomers are from 3,3,4,4,5,5,6,6,7, 7,8,8,9,9,10,10,10-heptadecafluorodecyl acrylate (10mL) was changed to 3,3,4,4,5,5,6,6,7,7,8, 8,8-Tridecafluorooctyl methacrylate (8 mL). 6.65 g of polymer was obtained with a conversion rate of 41%.

[0082] After testing, the obtained polymer is Its n value is 5 and its number average molecular weight is 4000.

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Abstract

The invention discloses a block polymer which has a structural formula (I) shown in the description and contains a perfluoropolyether structure. Substituent groups are shown in the description. The invention further discloses a preparation method of the block polymer containing the perfluoropolyether structure. The preparation method disclosed by the invention is high in conversion rate and free of metal residue, and the prepared block polymer is novel in structure and high in stability.

Description

technical field [0001] The invention belongs to the field of organic polymer compounds, and relates to a block polymer containing a perfluoropolyether structure. Background technique [0002] Block polymers are high molecular compounds composed of at least two consecutive different structural units. Taking di-block copolymers as an example, by using two monomers with completely different properties for block copolymerization, it is possible to realize the characteristics of a homopolymer of two monomers on the same molecular chain. Block copolymers can be used as shape memory materials, thermoplastic elastomers, amphiphilic polymers, etc., and have broad application prospects. [0003] Perfluoropolyethers and their derivatives are widely used in various fields due to their good thermal stability, oxidation resistance, insulation, low surface energy, low volatility and biocompatibility. The performance of perfluoropolyether is closely related to its chain structure. Common ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/24
CPCC08F283/06C08F220/24
Inventor 郭寅天徐文前陈清郑昀红
Owner ZHEJIANG RES INST OF CHEM IND CO LTD
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