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Method for producing chloroprene graft copolymer latex, adhesive containing same, and adhesion method

A graft copolymer, chloroprene technology, applied in chloroprene adhesives, graft polymer adhesives, adhesives, etc., can solve problems such as inability to use glass, and achieve high adhesion. Effect

Active Publication Date: 2021-08-17
RESONAC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, application examples are limited to materials containing plasticizers such as soft polyvinyl chloride and leather, and cannot be applied to glass that can be bonded with chloroprene organic solvent-based contact adhesives.

Method used

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  • Method for producing chloroprene graft copolymer latex, adhesive containing same, and adhesion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] (1) Modulation of chloroprene polymer latex

[0120] In a reactor with an inner volume of 3 L, 970 g of chloroprene monomer (manufactured by Showa Denko Co., Ltd.), 30 g of methacrylic acid (manufactured by Tokyo Chemical Industry Co., Ltd.), and polyvinyl alcohol (manufactured by Kuraray Co., Ltd., trade name: PVA) were charged. -205) 41 g, N-lauroyl ethanolamide (manufactured by Toho Chemical Co., Ltd., trade name TOHOL (registered trademark) N-230) 6 g, pure water 1058 g, n-dodecyl mercaptan (chain transfer agent, Tokyo Kasei Kogyo Co., Ltd.) 4.3 g was stirred at 40 degreeC for 15 minutes, and the emulsion was obtained.

[0121] Sodium sulfite (co-catalyst) was added to the obtained emulsion, and then potassium persulfate was added as a polymerization initiator, and it superposed|polymerized at 45 degreeC in nitrogen atmosphere. Immediately after confirming that the conversion rate was 95% or more, the emulsion of phenothiazine was added to stop the polymerization t...

Embodiment 2～7

[0134] In the preparation of the chloroprene graft copolymer latex, the type and amount of the silane coupling agent and the amount of polyvinyl alcohol were changed as described in Table 1, and it was carried out in the same manner as in Example 1. In operation, gel content and adhesion were evaluated. The results are shown in Table 1 together.

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Abstract

The present invention relates to a method for producing a chloroprene graft copolymer latex that includes a step for adding an ethylenic double bond-containing silane coupling agent (B) to a chloroprene polymer latex and graft copolymerizing the ethylenic double bond-containing silane coupling agent (B) to the chloroprene polymer (A) in the chloroprene polymer latex at 10 to 50 DEG C (inclusive). The amount of ethylenic double bond-containing silane coupling agent (B) added is 0.4 to 9.0 mass parts (inclusive) per 100 mass parts of the chloroprene polymer (A). The present invention also relates to an adhesive containing the chloroprene graft copolymer latex and to a method for using the adhesive. The present invention can provide a method for producing a chloroprene graft copolymer latex containing no organic solvent and having high adhesive strength to glass, an adhesive containing the same, and a method for using the adhesive.

Description

technical field [0001] The present invention relates to a method for producing chloroprene graft copolymer latex, an adhesive containing the latex, and an adhesive method using the adhesive. Background technique [0002] Homopolymers of chloroprene, copolymers of chloroprene and other monomers (hereinafter, they are sometimes collectively referred to as chloroprene polymers.) Since they can be bonded to various types of adherends with low pressure High adhesive strength is obtained, so it is suitable for use in adhesive applications such as organic solvent-based contact adhesives. Moreover, in order to cope with the volatile organic chemical substance (VOC) control and organic solvent control from the viewpoint of environmental pollution and human health concerns, and the development of water-based adhesives that do not use organic solvents, it has been proposed to contain chloroprene Water-based adhesive for vinyl polymer latex. [0003] For example, Patent Document 1 pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/02C09J11/06C09J111/02C09J151/04
CPCC09J111/02C09J151/04C08F279/02C08L11/00C08F230/085C09J2301/304C08F2/26C08F2/30C08L11/02C09J2400/143C08C19/25
Inventor 关冈直树上条正直尾川展子
Owner RESONAC CORPORATION