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Rubber latex and water-based adhesive composition

A rubber latex, polymer chain technology, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve problems such as environmental pollution, and achieve the effect of excellent initial bonding strength

Inactive Publication Date: 2021-10-01
DENKA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solvent-based adhesives have problems of fire risk and environmental pollution caused by organic solvents during manufacture or use, and the demand for desolvation is gradually increasing.

Method used

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  • Rubber latex and water-based adhesive composition
  • Rubber latex and water-based adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] Hereinafter, although an Example demonstrates this invention, these Examples do not limit this invention.

[0080]

[0081] (production of chloroprene latex A)

[0082] Under a nitrogen stream, 150 parts by mass of water, 4.0 parts by mass of sodium dodecylbenzenesulfonate (manufactured by Kao Corporation: NEOPELEX G-65 (purity: 65% by mass)), 4.0 parts by mass of naphthalenesulfonate, were charged into a reactor with an inner capacity of 10 L. After 0.7 parts by mass of acid formaldehyde condensate sodium salt (manufactured by Kao Corporation: DEMOL N) and 0.5 parts by mass of sodium bisulfite, the solid content was dissolved to obtain a solution. Then, stirring the solution, 100 parts by mass of chloroprene and 0.55 parts by mass of 1-dodecanethiol were added to the solution. Using potassium persulfate as a polymerization initiator, polymerization was started at 10° C. under a nitrogen atmosphere. When the polymerization rate reached 75%, an emulsion containing 0....

Embodiment 1

[0086] In Example 1, the usage-amount of methacrylic acid was changed to 4 parts by mass, and the usage-amount of 1-dodecanethiol was changed to 0.04 parts by mass, and a graft copolymer rubber was obtained in the same manner as in Example 1. Latex b.

Embodiment 3

[0088] In Example 1, the usage-amount of methacrylic acid was changed to 8 parts by mass, and the usage-amount of 1-dodecanethiol was changed to 0.08 parts by mass, except that, a graft copolymer was obtained in the same manner as in Example 1 rubber latex c.

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PUM

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Abstract

A rubber latex containing a graft copolymer and a surfactant, the rubber latex being such: that the graft copolymer has a chloroprene polymer chain, and a graft chain including structural units derived from an ethylenic unsaturated carboxylic acid, the graft chain being bonded to the chloroprene polymer chain; and the molar ratio of the oxygen atom content to the chlorine atom content in the graft copolymer is 0.04-1.

Description

technical field [0001] The present invention relates to rubber latex and water-based adhesive composition. Background technique [0002] Adhesives based on chloroprene polymers (hereinafter referred to as "polychloroprene" in some cases) are mainly solvents obtained by dissolving chloroprene rubber in organic solvents. Department of adhesives. However, solvent-based adhesives have problems of risk of fire and environmental pollution due to organic solvents during production or use, and the demand for desolvation is increasing. As a means of desolvation, it is effective to replace it with a water-based adhesive based on a chloroprene polymer latex. [0003] As a water-based adhesive based on chloroprene polymer latex, for example, the following two-component water-based adhesive is known: with respect to the chloroprene polymer latex, the crosslink density is 0.02 to 1.00 pieces of water-based polyurethane resin are blended, and an aziridine-based, carbodiimide-based or bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C2/06C08F279/02C09J11/06C08K5/29C08L11/02C08L51/06C08L101/00C09J111/02C09J151/06
CPCC09J111/02C08F279/02C08C19/20C08L51/04C09J151/04C08L75/04C08L93/00C08F220/06
Inventor 大串元小野冢正雄小林直纪安藤辽太郎
Owner DENKA CO LTD
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