Polymer particle, resin composition containing same, and molded body

A technology of resin composition and polymer, applied in the field of molded body, polymer particle, and resin composition containing it, can solve the problem of lack of optical properties, thermal stability, low humidity and heat resistance, and low industrial application value of the molded body and other problems, to achieve the effect of excellent thermal stability and less color difference

Active Publication Date: 2008-02-27
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (ii) The thermal stability and heat-and-moisture resistance of the molded article composed of the resin composition mixed with polymer particles are low
[0009] Such moldings cannot be used for applications exposed to high temperatures, nor do they have sufficient optical properties
Therefore, the industrial application value of the molded body is low

Method used

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  • Polymer particle, resin composition containing same, and molded body
  • Polymer particle, resin composition containing same, and molded body
  • Polymer particle, resin composition containing same, and molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0105] Next, the present invention is illustrated by examples.

[0106] (mass average particle size, number average particle size)

[0107] The mass average particle diameter and the number average particle diameter of the polymer particles are measured using a laser diffraction / scattering particle size distribution analyzer (manufactured by Horiba Seisakusho, LA-910).

[0108] (polymerization reactors of synthesis examples 1 to 4)

[0109] A 3-liter glass separable four-necked flask was used as a polymerization reactor equipped with a Fruzen stirring blade, a thermometer, a cooling pipe, and a nitrogen vent pipe. The ratio of the upper blade diameter d1 and the groove diameter D of the stirring blade is d1 / D=0.55, the ratio of the lower end blade diameter d2 and the groove diameter D is d2 / D=0.60, and two baffle plates are installed.

[0110] (measurement of solid content)

[0111] The solid content was measured by drying the sample solution in a hot air dryer at 180° C. f...

Synthetic example 1

[0132] (Preparation of seed latex (a1))

[0133] 360.0 g of pure water, 83.0 g of n-butyl methacrylate, and 55.0 g of styrene were charged into the polymerization reactor. Then, the number of stirring revolutions was set at 110 rpm, the inner temperature of the polymerization reactor was raised to 82° C., and 102.0 g of potassium persulfate aqueous solution (an aqueous solution in which 2.0 g of potassium persulfate was dissolved in 100 g of pure water) was added to start polymerization. After 3 hours from the start of the polymerization, 50.3 g of potassium persulfate aqueous solution (an aqueous solution in which 0.3 g of potassium persulfate was dissolved in 50 g of pure water) was thrown into the polymerization reactor, and 248.0 g of n-butyl methacrylate, 166.0 g of styrene, 1.6 g of polyoxyethylene alkyl ether phosphate sodium salt (trade name: Fosfanol RS-610NA, manufactured by Toho Chemical Co., Ltd.) as a phosphate ester salt represented by the above formula (1), 550...

Synthetic example 2

[0140] (Preparation of polymer particles (A2))

[0141] 60.0 g of seed latex (a1) obtained in Synthesis Example 1 was charged into a polymerization reactor. 0.7 g of polyoxyethylene alkyl ether sodium phosphate containing 12.0 g of 1-chlorododecane, 2.0 g of benzoyl peroxide, 20.0 g of styrene, and 0.7 g of the phosphate ester salt shown in the above formula (1) A mixture of salt (trade name: Foosphano-Lu RS-610NA, manufactured by Toho Chemical Co., Ltd.), 100.0 g of pure water was preliminarily mixed with a mixer made by IKA "Ultratarax T-25" under the condition of 12000rpm for 2 minutes. After emulsification treatment, it was put into a polymerization reactor, and 30.0 g of acetone was further put in, and the temperature in the polymerization reactor was kept at 25° C. and the stirring rotation speed was 120 rpm for 3 hours. After utilizing vacuum evaporation to remove the acetone in the polymerization reactor, 400.0g of n-butyl methacrylate, 250.0g of styrene, 70g of ethyl...

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Abstract

Disclosed is a polymer particle obtained by polymerizing a monomer in the presence of a phosphate salt represented by the formula (1) below. The polymer particle is characterized by containing 0.01-1.0 part by mass of the phosphate salt per 100 parts by mass of the polymer particle. When such a polymer particle is blended in a resin, change in the color tone of the resin is suppressed without decreasing thermal stability or wet heat resistance of a molded body. A resin composition and molded body using such a polymer particle are excellent in thermal stability and wet heat resistance, and the color tone of the resin does not change very much before and after the blending of the polymer particle. (1) (In the formula, R<1> represents an alkyl group having 10-18 carbon atoms; R<2> represents an alkylene group having 2 or 3 carbon atoms; M represents an alkali metal or an alkaline earth metal; m represents a number of 1-20; and n represents 1 or 2.

Description

technical field [0001] The present invention relates to polymer particles, resin compositions containing the same, and molded articles (light diffusers, matte molded articles, etc.). [0002] This application claims priority based on Japanese Patent Application No. 2005-59176 filed on March 3, 2005, the content of which is incorporated herein. Background technique [0003] It has been known for a long time that mixing polymer particles with resin can impart various functions to it. For example, in various displays, transmissive screens, lighting equipment covers, etc., it is required that the image of the light source cannot be seen through, so it is necessary to use a light diffuser with excellent light diffusion characteristics. [0004] As a material for such a light diffuser, there is known a light diffusing resin composition in which polymer particles (light diffusing agent) are dispersed in a transparent resin, wherein the polymer particles have a predetermined averag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08F22/10C08L101/00
CPCC08L69/00C08F2/44C08K5/521C08F212/08C08J3/122C08J3/12C08F220/18C08J2333/12C08F220/1804C08L2666/04C08F20/10C08F30/02C08J5/00C08L101/00
Inventor 平井慎也笠井俊宏中山将辉
Owner MITSUBISHI CHEM CORP
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