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Stabilizer for polyolefin resin and stabilized polyolefin resin composition

A technique for polyolefin resins and stabilizers, which is applied in the field of stabilizers for thermoplastic resins and stabilized resin compositions, and can solve problems such as insufficient stability and inability to obtain sufficient diffusion properties of polypropylene resins

Active Publication Date: 2009-11-25
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although any technology can prevent dissolution from the base resin, due to the highly polar hindered amine group, it cannot obtain sufficient diffusion performance into the non-polar polymer polypropylene resin, and requires high stability. Sexual considerations are not sufficient

Method used

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  • Stabilizer for polyolefin resin and stabilized polyolefin resin composition
  • Stabilizer for polyolefin resin and stabilized polyolefin resin composition
  • Stabilizer for polyolefin resin and stabilized polyolefin resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] In a flask equipped with a stirrer, a reflux condenser, a temperature control device, a drip pump, and a nitrogen gas introduction tube, add 45 parts of deionized water, followed by 0.2 parts of 28% ammonia solution and the emulsion formulated in the ratio shown in Table-1 5 parts were put into the reaction container, and while replacing the inside of the reaction container with nitrogen, after heating up to 75°C, an initiator solution in which 0.1 part of ammonium persulfate (polymerization initiator) was dissolved in 5 parts of water was added to form seed particles. Measure the temperature of the solution with a thermometer, confirm the exothermic peak, add the remaining emulsion dropwise at an internal temperature of 75°C for 4 hours, and then perform emulsion polymerization at an internal temperature of 75°C for 2 hours to form an emulsion dispersion. After cooling the obtained emulsion dispersion to room temperature, spray drying was carried out at an inlet tempera...

Embodiment 2～4、 comparative example 1、2

[0080] Carry out the emulsion polymerization of composition shown in Table-1 with the method identical with embodiment 1, reclaim solid with the spray drying method identical with embodiment 1 for the obtained emulsion dispersion. In the same manner as in Example 1, after preparing the resin composition according to the ratio described in Table-1, a test piece was prepared and subjected to an accelerated light resistance test and a heat resistance test. The test results are shown in Table-1.

Embodiment 5

[0082] Put 145 parts by mass of deionized water, 0.5 parts by mass of dispersant A, 0.1 part by mass of sodium sulfate, and 0.1 part by mass of 28% ammonia solution into a reaction vessel equipped with a stirrer and a thermometer, and then add the monomers of the composition shown in Table-1 0.6 parts by mass of mixture and polymerization initiator lauroyl peroxide. While stirring the contents, the temperature was raised from 40°C to 90°C over 1 hour and 25 minutes, and the temperature of the contents was brought to 90°C. After reaching 90° C., stirring was further carried out for 1 hour and 30 minutes, followed by cooling to obtain a suspension of polymer particles. The resulting suspension was filtered through a filter cloth made of nylon with a pore diameter of 45 μm, washed sufficiently with deionized water, and then dried at 50° C. for 24 hours to obtain a copolymer (A). Next, after preparing the resin composition according to the ratio described in Table-1, a test panel...

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PUM

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Abstract

Disclosed is a stabilizer capable of providing a polypropylene resin (PP resin) with high thermal stability. Also disclosed is a PP resin composition having high stability into which the stabilizer is added. Specifically disclosed is a stabilizer containing a copolymer (A) which is obtained by polymerizing an unsaturated monomer mixture composed of 1-50 parts by mass of an ethylenically unsaturated monomer (a) represented by the general formula (I) below and having a piperidyl group in a molecule, 50-99 parts by mass of at least one monomer (b) selected from isobutyl methacrylates, alkyl (meth)acrylates having an alkyl group with 6-13 carbon atoms and aromatic vinyl monomers, and 0-20 parts by mass of an ethylenically unsaturated monomer (c) other than the components (a) and (b) (with the total of the components (a), (b) and (c) being 100 parts by mass). (I) In the formula, R represents a hydrogen atom or an alkyl group having 1-2 carbon atoms; X represents an oxygen atom or an imino group; Y represents a hydrogen atom or an alkyl group or alkoxyl group having 1-20 carbon atoms; and Z represents a hydrogen atom or a cyano group.

Description

technical field [0001] The present invention relates to a stabilizer for thermoplastic resins and a stabilized resin composition, and more specifically relates to a stabilizer mainly used for the modification of polyolefin resins, especially polypropylene-based resins, which can be added to the resin to significantly improve the stability of the resin A stabilizer for heat-resistant and stable polyolefin-based resins and a stabilized resin composition. Background technique [0002] In recent years, a large number of plastic products such as polyethylene, polypropylene, polystyrene, polyester resin, acrylic resin, and polyvinyl chloride resin have been used, and their waste disposal has attracted much attention as one of the environmental problems (クロズァップ), is becoming a larger social problem. Among them, polypropylene-based resins are used in automobile bumpers and the like due to their light weight and high rigidity, and are the materials with the largest production volume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08F220/10
CPCC08F220/34C08L2201/08C08F26/06C08L39/04C08L23/02C08L2666/04C08L33/06
Inventor 木浦正明椋田贵宽
Owner MITSUBISHI CHEM CORP
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