Polymer and preparation method and application thereof

A technology of copolymerization and polymerization of monomers, which is applied in the direction of ester copolymer adhesives, adhesive types, textiles and papermaking, etc., and can solve problems such as the influence of emulsion stability, low silicone content, and restrictions on wide application

Inactive Publication Date: 2014-02-05
广东喜洋洋纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above two patents have prepared organosilicon-modified polyvinyl acetate and its copolymer emulsion, due to the low content of organosilicon, it is difficult to fully reflect the excellent characteristics of organosilicon modification, and cannot meet the needs of high-grade; The easy hydrolysis of silanes greatly affects the stability of their emulsions during preparation and storage, thus limiting the wide application of organosilane-modified polyesters and their copolymer emulsions
[0006] Since the traditional introduction of organosilane modified polyester and its copolymer emulsion is generally obtained by emulsion polymerization through free radicals, and due to the easy hydrolysis of organosilane, there is no modified polyester with high silicon content. Examples of esters and their copolymers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example is a production example of the copolymer of the present invention.

[0037] A. Polymerization

[0038] In a 300ml three-necked flask equipped with a stirrer, nitrogen gas and reflux condensing device, add 175g of ethanol, 45g of ethyl acrylate, 22.5g of methacryloxypropyltriethoxysilane, methacryloyloxyethyl Trimethyl ammonium chloride 7.5g, azobisisobutyronitrile (AIBN) 0.75g. Place the three-necked flask in a temperature-controlled water bath, blow nitrogen and oxygen for 30 minutes, raise the temperature to 55°C while stirring, and stop the polymerization reaction after stirring at 55°C for 180 minutes.

[0039] B. Refined

[0040] After the polymerization reaction is over, remove the nitrogen device, and introduce ethanol vapor into the reaction solution for 30 minutes to drive out unreacted monomers, and then introduce the unreacted monomers into a recovery device for recovery, and then place the above reaction solution in a vacuum Dry in a desiccat...

Embodiment 2

[0042] This example is another production example of the copolymer of the present invention.

[0043] A. Polymerization

[0044] In a 300ml three-necked flask equipped with a stirrer, nitrogen and reflux condensing device, add methanol 180g, vinyl acetate 52.5g, vinyltriethoxysilane 16.5g, dimethyl diallyl ammonium chloride 6g , azobisisobutyronitrile (AIBN) 0.9g. Place the three-neck flask in a temperature-controlled water bath, blow nitrogen and oxygen for 30 minutes, raise the temperature to 60°C while stirring, and stop the polymerization reaction after stirring at 60°C for 270 minutes.

[0045] B. Refined

[0046] After the polymerization reaction is over, remove the nitrogen device, and introduce methanol vapor into the reaction solution for 25 minutes to drive out unreacted monomers, and then introduce the unreacted monomers into a recovery device for recovery, and then put the above reaction solution in a vacuum Dry in a desiccator at room temperature to obtain the ...

Embodiment 3

[0048] This example is another production example of the copolymer of the present invention.

[0049] A. Polymerization

[0050] In a 300ml three-necked flask equipped with a stirrer, nitrogen gas and reflux condensing device, add 180g of ethanol, 1.06g of methylenebisacrylamide, 52.5g of vinyl acetate, 16.5g of vinyltriethoxysilane, dimethyl Diallyl ammonium chloride 6g, azobisisobutyronitrile (AIBN) 0.75g, put the three-necked bottle in a temperature-controlled water bath, blow nitrogen and oxygen for 30min, raise the temperature to 60°C while stirring, at 60°C The polymerization reaction was terminated after stirring for 270 minutes.

[0051] B. Refined

[0052] After the polymerization reaction is over, remove the nitrogen device, and introduce ethanol vapor into the reaction liquid for 25 minutes to drive out the unreacted monomers, and then introduce the unreacted monomers into the recovery device for recovery, and then put the above reaction liquid in a vacuum drying...

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PUM

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Abstract

The invention discloses a copolymer. The copolymer is prepared through copolymerizing monomers (a, b and c), wherein the monomers a are mixed monomers of one or more than two kinds of slightly-water-soluble or water-insoluble polymerizable monomers of a1) alkenes or derivatives thereof, a2) esters or derivatives thereof and a3) nitriles or derivatives thereof; the monomers b are mixed monomers of one or more than two kinds of polymerizable monomers of alkenyl silanes, acryloxy silanes and acrylamide silanes; the monomers c are mixed monomers of one or more than two kinds of polymerizable monomers with cationic groups and polymerizable monomers with anionic groups. Compared with the traditional organosilane group modified copolymers, the copolymer disclosed by the invention has the advantages that the silicon content is high, the storability of organosilane groups is good, and the storage is stable; polymers are modified by ionic groups, so that the copolymer has water solubility.

Description

technical field [0001] The present invention relates to high molecular polymers, in particular to silane-modified interpolymers and compositions containing the interpolymers. Background technique [0002] Polyester emulsion adhesive is one of the most sold water-based adhesives in the market, and is widely used in paper processing, textiles, building materials, coatings, packaging and other industries. But its film water resistance is poor, especially polyvinyl acetate emulsion commonly known as white latex, its film water resistance is even worse; when used as a binder, its bond strength is low. In order to solve the problems of poor water resistance and low bond strength of polyester emulsion adhesives, a known method is to modify conventional polyester emulsions with groups having a silane structure. [0003] In the Chinese invention patent with the publication number CN1500818, a polyvinyl acetate emulsion modified with organosiloxane is disclosed, and its viscosity and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F230/08C08F220/34C08F218/08C08F226/02C08F212/08C08F222/38C08F220/14C08F220/44C08F220/28C08F220/06C08F6/00C08F2/38D21H21/16D21H21/18D21H19/20C09D131/04C09J133/08
Inventor 郭纬林润惠李汝基
Owner 广东喜洋洋纸业有限公司
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