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Carboxyl group-containing polymer composition

A polymer and composition technology, applied in the field of carboxyl-containing polymer compositions, can solve the problems of slow speed and difficulty in obtaining dispersion liquid, and achieve the effects of high transparency, excellent dispersibility and low viscosity

Inactive Publication Date: 2014-03-12
SUMITOMO SEIKA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since carboxyl group-containing polymers are usually fine powders, they tend to form lumps (gnocchi) when dispersed in water, etc.
Once the gnocchi is formed, a gel-like layer will form on the surface of the gnocchi, so the speed of water penetration into the gnocchi becomes slower, making it difficult to obtain a uniform dispersion

Method used

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  • Carboxyl group-containing polymer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In a four-neck flask with a capacity of 500 mL (milliliters) having a stirrer, a thermometer, a nitrogen conduit, and a cooling tube, add 45 g (0.625 moles) of acrylic acid, and an alkyl methacrylate having 18 to 24 carbon atoms as an alkyl group. BLEMMAR VMA70 (manufactured by NOF Corporation, 10-20 parts by mass of stearyl methacrylate, 10-20 parts by mass of eicosyl methacrylate, 59-80 parts by mass of behenyl methacrylate and 0.88 g of a mixture of tetracosyl methacrylate (less than 1 part by mass), 0.18 g of pentaerythritol tetraallyl ether as a compound having two or more ethylenically unsaturated groups, and a radical polymerization initiator 0.081 g (0.00035 mol) of 2,2'-azobismethyl isobutyrate, 160 g of n-heptane and 24 g of ethyl acetate as a reaction solvent, and oleic acid (manufactured by NOF Corporation, model: Extra Olein ) 0.45 g (1 mass part with respect to 100 mass parts of acrylic acid). Next, after the solution was uniformly stirred and mixed, nitr...

Embodiment 2

[0063] In Example 1, except that the usage amount of oleic acid was changed from 0.45g to 0.1125g (0.25 parts by mass relative to 100 parts by mass of acrylic acid), it was carried out in the same manner as in Example 1 to obtain the carboxyl group-containing carboxyl powder of white fine powder. Polymer composition 40g.

Embodiment 3

[0065] In Example 1, except that 0.45 g of oleic acid was changed to 0.225 g of caprylic acid (manufactured by Wako Pure Chemical Industries, Ltd., reagent grade 1) (0.5 parts by mass relative to 100 parts by mass of acrylic acid), the same as in Example 1 Carry out similarly, obtain the carboxyl group-containing polymer composition 43g of white fine powder.

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Abstract

The invention aims to provide a carboxyl group-containing polymer composition, which has excellent dispersibility in water or the like and gives a neutralized viscous liquid having low viscosity and high transparency. A carboxyl group-containing polymer composition comprises, with respect to 100 parts by mass of a carboxyl group-containing polymer obtained by copolymerizing an [alpha], [beta]-unsaturated carboxylic acid and a compound having at least two ethylenically unsaturated groups, 0.05 to 5 parts by mass of at least one compound selected from a group consisting of (1) a fatty acid A and (2) a fatty acid ester of a fatty acid B and a monohydric alcohol having 1 to 22 carbon atoms.

Description

technical field [0001] This invention relates to carboxyl-containing polymer compositions. Background technique [0002] Carboxyl group-containing polymers can be used as thickeners such as cosmetics, moisturizers such as cataplasms, emulsifiers, suspension stabilizers such as suspensions, gelling bases such as batteries, etc. [0003] When the carboxyl group-containing polymer is used for the above-mentioned use, for example, the carboxyl group-containing polymer is added to water or the like to prepare a uniform dispersion, which is neutralized and dissolved with an alkali before use. However, since carboxyl group-containing polymers are usually fine powders, they tend to form lumps (numps) when dispersed in water or the like. Once the gnocchi is formed, a gel-like layer is formed on the surface of the gnocchi, so that the rate at which water penetrates into the gnocchi becomes slow, making it difficult to obtain a uniform dispersion. [0004] From the viewpoint of preve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08K5/09C08K5/101C08L91/00
CPCC08K5/101C08L33/02C08F220/64C08F216/125C08K5/09C08L91/00C08F220/06
Inventor 竹森信一村上亮辅森光裕一郎铃木正博
Owner SUMITOMO SEIKA CHEM CO LTD
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