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Mold release agent, mold release agent composition, and method for producing mold release agent

A release agent and composition technology, applied in the direction of coating, etc., can solve the problems of difficult uniformity and high melt viscosity, and achieve the effect of excellent release property

Pending Publication Date: 2018-10-16
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing fluoropolymer-based mold release agents have high melt viscosity, and there is a problem that it is difficult to apply uniformly to the molding die at normal operating temperatures.

Method used

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  • Mold release agent, mold release agent composition, and method for producing mold release agent
  • Mold release agent, mold release agent composition, and method for producing mold release agent
  • Mold release agent, mold release agent composition, and method for producing mold release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0172] Perfluoroalkyl methacrylate (C 6 f 13 -CH 2 CH 2 OCOC (CH 3 )=CH 2 ) 45g and stearyl acrylate 5g fully dissolved, add polyoxyethylene (n=20) lauryl ether (nonionic emulsifier) ​​4g, lauryl mercaptan 0.2g, dipropylene glycol monomethyl ether 7g and ion 95 g of exchanged water was used for emulsification with a high-pressure homogenizer. The obtained emulsion was added to a 300ml four-neck flask equipped with a reflux cooling tube, a nitrogen inlet tube, a thermometer and a stirring device, and kept at 60° C. for about 1 hour under nitrogen flow. As an initiator, a solution obtained by dissolving 0.3 g of ammonium persulfate in 5 g of water was added to initiate polymerization. It heated and stirred at 60 degreeC for 3 hours, prepared the aqueous copolymer latex, and adjusted the obtained aqueous latex so that the solid content concentration might be 0.3 mass% with ion-exchanged water.

Embodiment 2

[0174] Perfluoroalkyl acrylate (C 6 f 13 -CH 2 CH 2 OCOCH=CH 2 ) 35g and stearyl acrylate 15g fully dissolved, utilize the method identical with embodiment 1, prepare aqueous copolymer latex, utilize ion-exchanged water to adjust to solid component concentration and be 0.3mass%.

Embodiment 3

[0176] Perfluoroalkyl methacrylate (C 6 f 13 -CH 2 CH 2 OCOC (CH 3 )=CH 2 ) 47.5g and 2.5g of isobornyl methacrylate were fully dissolved, and the aqueous copolymer latex was prepared by the same method as in Example 1, and the solid content concentration was adjusted to 0.3mass% by using ion-exchanged water.

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Abstract

The present invention addresses the problem of providing a mold release agent that has excellent mold releasability. The solution is a mold release agent which is formed of a fluorine-containing polymer that can be obtained by copolymerizing (A) a radically polymerizable monomer in an amount of 20% by weight or more based on the total amount of monomers, which contains a perfluoroalkyl group having 1-6 carbon atoms but does not contain a functional group and (B) a radically polymerizable monomer that has no functional group.

Description

[0001] This case is filed on November 28, 2013 , the application number is 201380062512.4 , the name of the invention is " demoulding Preparation method of agent, release agent composition and release agent Divisional application for " technical field [0002] The present invention relates to a release agent, a release agent composition and a method for producing the release agent. Background technique [0003] When molding synthetic resin, rubber, etc., it is necessary to apply a release agent (external release agent) to the inner surface of a molding die (mold) in advance to improve mold release properties. This release agent is often provided as a composition (release agent composition) dissolved or dispersed in a solvent or dispersant in advance. The release agent composition is usually coated on the inner surface of the molding die by spraying, brushing or the like. After coating, the solvent and dispersant are removed, and a coating film of release agent is form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/24C08F220/18C09D133/16B29C33/62
CPCC08F220/24B29C33/62C09D133/16C08L2201/54C08F220/1812C08F220/1818C08F220/1811
Inventor 中前靖史福田晃之植畑秀一丸山茂
Owner DAIKIN IND LTD