Vinyl-based fluorinated copolymer, water- and oil-repellent composition containing the same and its application

A vinyl-based, water- and oil-repellent technology, which is applied in non-fiber pulp addition, retention aid addition, papermaking, etc. Anti-oil effect, good retention effect

Active Publication Date: 2022-07-19
GUANGZHOU SHINE POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] US6447588B1 discloses a water-dispersible water- and oil-repellent composition, preferably using polyfluoroalkyl phosphates with 2-20 carbon atoms, which have good storage stability. Since phosphates are water-soluble, there are Can not endow the paper with good waterproof performance, it must be used with a special waterproof agent to achieve the waterproof effect
CN102333915A discloses a non-fluorine aqueous dispersion with paraffin and acrylate copolymer as the main components, which can only achieve a certain waterproof effect but not oil resistance, and the melting point of paraffin is low, especially not heat-resistant oil; US2010018659A1 discloses A fluorocarbon siloxane copolymer has been developed, which needs to be emulsified by an emulsifier before it can be used. The waterproof and oil-proof performance is poor, and the retention effect is not good, so it needs to be used in conjunction with a retention aid; Water and oil repellents, which are copolymerized by using fluorine-containing monomers having 1 to 6 carbon atoms, vinylpyrrolidone monomers, monomers having anion-donating groups, and other fluorine-free (meth)acrylate monomers, Form a fluorine-containing copolymer, neutralize the anion-supplying group with a base such as ammonia and an organic amine after copolymerization, or use an anion-supplying group monomer that has been neutralized with a base in advance to carry out copolymerization, and prepare a waterproof and oil-repellent composition Has an odor caused by ammonia or organic amines; CN109247021A discloses a liquid repellent composition comprising a copolymer A, an alkali metal ion and an aqueous medium, wherein the copolymer A is composed of a perfluoroalkyl group containing 4 to 6 carbons A fluorine-containing copolymer with a mass average molecular weight of less than 84,000 obtained by polymerizing monomers, (meth)acrylic acid, and monomers with (poly)oxyalkylene groups, and then the copolymer solution is treated with alkali metal hydroxide and mixed with water to obtain the dispersion of the copolymer A
The waterproof and oil-proof compositions described in CN102762618A and CN109247021A all need to be used in conjunction with waterproofing agents such as AKD waterproof emulsion, and the retention effect is not good

Method used

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  • Vinyl-based fluorinated copolymer, water- and oil-repellent composition containing the same and its application
  • Vinyl-based fluorinated copolymer, water- and oil-repellent composition containing the same and its application
  • Vinyl-based fluorinated copolymer, water- and oil-repellent composition containing the same and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] In a four-necked flask equipped with an electric stirrer, a constant-pressure dropping funnel, a thermometer and a condenser, add 250 parts of propylene glycol methyl ether as a solvent, turn on the stirrer, and add 40 parts of CH 2 =CH-C(=O)-O-CH 2 CH 2 -F(CF 2 ) 6 , 30 parts of methyl methacrylate, 25 parts of dimethylaminoethyl methacrylate and 5 parts of acrylic acid with 1 part of 2,2'-azobisisobutyronitrile, 0.5 part of dodecyl mercaptan Mix evenly, add it to a four-necked flask under nitrogen atmosphere, react at 60°C for 10 hours to complete the polymerization, cool to room temperature to obtain a vinyl-based fluorine-containing copolymer solution, and prepare it into a water-soluble solution with 1% HCl solution ammonium salt, and finally diluted with deionized water to form a water-dispersible water- and oil-repellent composition with a solid concentration of 20%.

Embodiment 2

[0071] In a four-necked flask equipped with an electric stirrer, a constant-pressure dropping funnel, a thermometer and a condenser, add 250 parts of propylene glycol methyl ether as a solvent, turn on the stirrer, and add 40 parts of CH 2 =CH-C(=O)-O-CH 2 CH 2 -F(CF 2 ) 6 , 30 parts of ethyl acrylate, 25 parts of dimethylaminoethyl methacrylate and 5 parts of acrylic acid are mixed with 1 part of 2,2'-azobisisobutyronitrile and 0.5 part of dodecyl mercaptan , added to a four-necked flask under nitrogen atmosphere, reacted at 60°C for 10 hours to complete the polymerization, cooled to room temperature to obtain a vinyl-based fluorine-containing copolymer solution, which was prepared into a water-soluble ammonium chloride solution with 1% HCl solution The salt is finally diluted with deionized water to a water-dispersible water- and oil-repellent composition with a solids concentration of 20%.

Embodiment 3

[0073] In a four-necked flask equipped with an electric stirrer, a constant-pressure dropping funnel, a thermometer and a condenser, add 250 parts of propylene glycol methyl ether as a solvent, turn on the stirrer, and add 40 parts of CH 2 =CH-C(=O)-O-CH 2 CH 2 -F(CF 2 ) 6, 30 parts of isobutyl methacrylate, 25 parts of dimethylaminoethyl methacrylate and 5 parts of acrylic acid with 1 part of 2,2'-azobisisobutyronitrile, 0.5 part of dodecyl sulfide The alcohol was mixed evenly, added to a four-necked flask under a nitrogen atmosphere, reacted at 60°C for 10 hours to complete the polymerization, cooled to room temperature to obtain a vinyl-based fluorine-containing copolymer solution, which was prepared with 1% HCl solution into The water-soluble ammonium salt is finally diluted with deionized water to form a water-dispersible water- and oil-repellent composition with a solid concentration of 20%.

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Abstract

The present invention provides a new vinyl-based fluorine-containing copolymer, which is obtained by free-radical copolymerization of short-chain fluorine-containing monomers, quaternary amine-based acrylate-based monomers, and acrylic-based monomers. The water- and oil-repellent composition prepared from the composition is applied to paper-based products, and is more easily combined with the negatively charged hydroxyl groups in the paper fibers to achieve a good retention aid effect. The fluorine-containing monomer used is a short-chain fluorine-containing monomer, which does not produce PFOA / PFOS with bioaccumulation and refractory degradation, and is non-polluting to the environment and harmless to organisms. The water- and oil-repellent composition prepared by the composition has better water- and oil-repellent effect when applied to paper-based products.

Description

technical field [0001] The invention belongs to the field of water- and oil-repellent coatings for paper-based products, in particular to a water- and oil-repellent composition containing a vinyl-based fluorine-containing copolymer and an application thereof. Background technique [0002] With the continuous development of modern technology, pulp molded products (paper plastic) have become recognized green packaging materials. Paper plastic is a kind of packaging material obtained by using primary fiber or secondary fiber as the main raw material, dehydrating the fiber with a special mold, and then drying and shaping. Paper-plastic has the advantages of cheap and easy-to-obtain raw materials, pollution-free production process, good shock resistance, cushioning, ventilation, anti-static performance, recyclability and easy degradation, etc., so it has a wide range of packaging fields such as electronic products, daily chemical products, and fresh food. application prospects. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/22C08F220/14C08F220/34C08F220/06C08F220/18D21H17/37D21H21/10
CPCC08F220/22D21H17/37D21H21/10C08F220/14C08F220/34C08F220/06
Inventor 刘伟时陈楚亮石建伟韩泽明胡龙林观生
Owner GUANGZHOU SHINE POLYMER TECH
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