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Tackifying resin emulsion and aqueous adhesive/adhesive composition

A technology of tackifying resin emulsion and resin, which is applied in the field of tackifying resin emulsion and water-based adhesive/adhesive composition, can solve the problems of low adhesion, water-resistant adhesion, insufficient emulsification of emulsion, etc. Achieve the effect of good whitening resistance and excellent emulsification

Pending Publication Date: 2019-10-11
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tackifying resin emulsion obtained by using the above-mentioned emulsifier may also generate a large amount of aggregates, and the emulsifying properties of the emulsion are not yet sufficient.
In addition, even if a tackifying resin emulsion with good emulsifiability can be obtained, the water-based adhesive / adhesive containing the emulsion may be easily combined with water, and there may be problems with When the adhesive strength of various substrates (hereinafter also referred to as water-resistant adhesive strength) becomes low

Method used

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  • Tackifying resin emulsion and aqueous adhesive/adhesive composition
  • Tackifying resin emulsion and aqueous adhesive/adhesive composition
  • Tackifying resin emulsion and aqueous adhesive/adhesive composition

Examples

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Embodiment

[0098] Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in more detail, this invention is not limited to these. "Parts" and "%" in the examples are based on weight unless otherwise specified.

[0099] [Manufacture of base polymer]

manufacture example 1

[0101]Under nitrogen stream, drop into by water 43.4 parts and polyoxyethylene alkyl ether sulfate ammonium salt (anionic emulsifier: commodity Name "HITENOL LA-16", manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.) 0.92 parts of aqueous solution was heated up to 70°C. Next, a mixture consisting of 90 parts of butyl acrylate, 7 parts of 2-ethylhexyl acrylate and 3 parts of acrylic acid, 0.24 parts of potassium persulfate (polymerization initiator), 0.11 parts of sodium bicarbonate (pH regulator) and 1 / 10 of the aqueous initiator solution consisting of 8.83 parts of water was added to the reaction container, and a preliminary polymerization reaction was performed at 70° C. for 30 minutes under a nitrogen stream. Next, the mixture and the remaining 9 / 10 of the initiator aqueous solution were added to the reaction container over 2 hours to carry out emulsion polymerization, and then kept at 70° C. for 1 hour to complete the polymerization reaction. The acrylic polymer emul...

manufacture example 2

[0104] Add 100 parts of polymerized rosin (acid value 145mgKOH / g, softening point: 140°C) and 14 parts of pentaerythritol into a reaction vessel equipped with a stirring device, a condenser, a thermometer, and a nitrogen gas inlet tube / water vapor inlet tube, After making it react at 250 degreeC for 2 hours, it heated up to 280 degreeC further, and reacted at the same temperature for 12 hours, and esterification was complete|finished. Thereafter, water and the like were removed under reduced pressure to obtain a polymerized rosin ester having a softening point of 160°C.

[0105] [production of rosinol resin]

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Abstract

An object of the invention is to provide a novel tackifying resin emulsion which is excellent in emulsification property and can provide high water-resistant adhesive force to an aqueous adhesive / adhesive composition. The tackifying resin emulsion comprises at least one resin (A) selected from the group consisting of rosin resin (a1), petroleum resin (a2) and terpene resin (a3); and a multi-chainmulti-hydrophilic group type compound (B) having at least two hydrophobic chains and hydrophilic groups in the molecule.

Description

technical field [0001] The present invention relates to tackifying resin emulsions and aqueous adhesive / adhesive compositions. Background technique [0002] In the manufacture of tapes, sheets, labels, etc., as an adhesive / adhesive composition applied to paper, plastic film, etc., which are substrates, conventionally, tackifier resins and (a Base) A solution-type adhesive / adhesive composition in which a base polymer such as an acrylic polymer is dissolved in an organic solvent. In recent years, emulsion-type water-based adhesives have Agent / adhesive compositions are gradually becoming mainstream. [0003] As a water-based adhesive / adhesive composition, it has been proposed to emulsify the above-mentioned base polymer and tackifier resin in the presence of various anionic emulsifiers and nonionic emulsifiers, and then mix them. products (refer to Patent Documents 1 and 2). However, the tackifier resin emulsion obtained by using the above-mentioned emulsifier may generate a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L93/04C08L57/02C08L45/00C09J11/08C09J133/00
CPCC08J3/03C09J11/08C09J133/00C08J2393/04C08J2357/02C08J2333/00C08L93/04C08L57/02C08L45/00
Inventor 小川寿子川端昭宽佐野正英
Owner ARAKAWA CHEM IND LTD
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