Fluorosilicone graft copolymer, surface treating agent and application

A technology of graft copolymer and fluorosilicon, which is applied in the field of fluorosilicon-containing polymers, can solve the problems of poor water and oil repellency

Active Publication Date: 2020-03-20
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Considering that the existing C8 solvent-based water and oil repellent finishing agent has safety and environmental problems, its substitute product C6 solvent-based water and oil repellent finishing agent has poor water and oil repellency, and the solution type water and oil repellent The high performance and ease of use of the finishing agent cannot be replaced by emulsion products. Therefore, it is necessary to develop a new, environmentally safe and high-performance solution-type water- and oil-repellent finishing agent.

Method used

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  • Fluorosilicone graft copolymer, surface treating agent and application
  • Fluorosilicone graft copolymer, surface treating agent and application
  • Fluorosilicone graft copolymer, surface treating agent and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0137] First prepare the fluorosilicone monomer 2:

[0138] CF 3 CF 2 O-(C 4 f 8 O) 20 -CF 2 -CH 2 -O-CH 2 CH 2 CH 2 -Si-(CH 2 -CH=CH 2 ) 3 .

[0139] Proceed as follows:

[0140] S1: add 300g of CF 3 CF 2 O-(C 4 f 8 O) 20 -CF 2 -CH 2 -O-C(=O)F and 43.81g methanol were stirred and reacted at room temperature for 24h. After the reaction was completed, the reaction mixture was placed in a separatory funnel, washed three times with methanol, and the lower layer sample was distilled under reduced pressure to obtain perfluoropolyether methyl ester;

[0141] S2: Add 100g of perfluoropolyether methyl ester into the three-necked flask, and add a total of 6.89g of NaBH in 3 times 4 , add 200mL of absolute ethanol, stir and react at room temperature for 24h under the protection of nitrogen to obtain perfluoropolyether methanol;

[0142]S3: Under the protection of nitrogen, add 50g of perfluoropolyether methanol and 1.64g of potassium tert-butoxide into a three-neck...

Embodiment 2

[0149] Weigh 33g of fluorosilicon monomer 4, 19g of octadecyl acrylate, 4g of mercaptoethanol, 4g of vinyltrimethoxysilane, 1g of tert-butyl peroxyvaleric acid and 130g of butyl acetate in a four-necked flask, React at 75°C for 8 hours in the environment, turn off the nitrogen to end the reaction, and obtain a solution of the fluorine-containing silicon graft copolymer.

[0150] Among them, fluorosilicone monomer 4:

[0151] CF 3 CF 2 O-(C 3 f 6 O) 20 -CF 2 -CH 2 -O-CH 2 CH 2 CH 2 -Si-(CH 2 -CH=CH 2 ) 3 .

Embodiment 3

[0153] Weigh 33g of fluorosilicone monomer 8, 19g of octadecyl acrylate, 4g of 3-chloro-2-hydroxypropyl methacrylate, 2g of methacryloxypropyltrimethylsilane, tert-t-valeric acid peroxide 1 g of butyl ester and 130 g of butyl acetate were placed in a four-necked flask, reacted at 75° C. for 8 hours in a nitrogen atmosphere, and the nitrogen was turned off to complete the reaction to obtain a solution of fluorine-containing silicon graft copolymer.

[0154] Among them, fluorosilicone monomer 8:

[0155] CF 3 CF 2 O-(C 2 f 4 O) 20 -CF 2 CF 2 -CH 2 -O-CH 2 CH 2 CH 2 -Si-(CH 2 -CH=CH 2 ) 3 .

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Abstract

The invention belongs to the field of polymers containing fluorosilicone and especially discloses a fluorosilicone graft copolymer, a surface treating agent containing the fluorosilicone graft copolymer and application of the surface treating agent. The fluorosilicone graft copolymer is formed by graft copolymerization of a fluorosilicone monomer, a fluorine-free (methyl)acrylate monomer, an active hydrogen-containing monomer and organosiloxane. According to the fluorosilicone graft copolymer in the invention, a proper fluorine-containing monomer and a proper organic silicon monomer are selected and are inserted into a main chain of acrylic resin or grafted to the acrylic resin as side groups through a one-step graft polymerization reaction, so a dendritic network structure is generated and the advantages of organic silicon and an organic fluorine compound are combined; and therefore, excellent waterproof and oil-proof effects are achieved.

Description

technical field [0001] The invention relates to a fluorine-silicon-containing polymer, in particular to a fluorine-silicon graft copolymer, and also to a surface treatment agent containing the fluorine-silicon graft copolymer and the application of the surface treatment agent. Background technique [0002] At present, the fluorine-containing water and oil repellent products that have been industrialized and mature are mainly fluorine-containing monomer polymers (C8 products) based on perfluorooctyl compounds, but this perfluorooctyl compound is easy to produce and difficult to degrade during polymerization. PFOA (perfluorooctanoic acid and its salts) and PFOS (perfluorooctanesulfonyl compounds), which are toxic, bioaccumulative, and carcinogenic, are by-products. Therefore, countries around the world have issued relevant standards to limit fluorine-containing products such as PFOS. sales and use. [0003] Studies have found that perfluorooctyl products do not produce PFOS a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/18C08F230/08C08F220/20D06M15/356D06M101/06
CPCC08F290/068D06M15/3568D06M2101/06D06M2200/12D06M2200/11C08F230/08C08F220/20
Inventor 李义涛晏超侯琴卿何鑫别文丰徐尹杰
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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