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Hot-melt pressure-sensitive adhesive

A pressure-sensitive adhesive, hot-melt technology, applied in the direction of adhesives, adhesive additives, rosin adhesives, etc., can solve the problems of environmental pollution and high cost, and achieve the effect of reducing costs, reducing dosage, and reducing usage.

Active Publication Date: 2015-05-27
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a hot-melt pressure-sensitive adhesive, which can solve the problems of high cost and serious environmental pollution caused by using petroleum resin as the production raw material of the existing hot-melt pressure-sensitive adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The composition of this hot-melt pressure-sensitive adhesive is: 30 parts of light-colored liquid resin; 90 parts of styrene-ethylene-diene block copolymer; 4 parts of mixed plasticizer; antioxidant N-dibutylamino di Zinc thioformate 2 parts, filler 9 parts.

[0021] 1. Preparation of light-colored liquid resin:

[0022] Refined rosin and fumaric acid accounting for 1.5% of the total mass of the refined rosin are reacted through diene synthesis to obtain fumaric acid modified refined rosin. The reaction temperature is 200°C and the reaction time is 1 hour. Increase the molecular weight of rosin and increase simultaneously Softening point and acid value; add the diethylene glycol that accounts for 11% of described refined rosin gross mass and carry out polyester reaction, introduce the butyric acid that accounts for 0.5% of described refined rosin gross mass in polyester reaction process, temperature of reaction at 250°C and a reaction time of 2 hours to obtain a semi-s...

Embodiment 2

[0026] The composition of this hot-melt pressure-sensitive adhesive is: 40 parts of light-colored liquid resin; 100 parts of styrene-ethylene-diene block copolymer; 5 parts of mixed plasticizer; antioxidant N-dibutylamino di Zinc thioformate 5 parts, filler 10 parts.

[0027] 1. Preparation of light-colored liquid resin:

[0028] Refined rosin and fumaric acid accounting for 2% of the total mass of the refined rosin are reacted through diene synthesis to obtain fumaric acid modified refined rosin. The reaction temperature is 210°C and the reaction time is 2 hours. Increase the molecular weight of rosin and simultaneously increase the Softening point and acid value; add the diethylene glycol that accounts for 12% of described refined rosin gross mass and carry out polyester reaction, introduce the butyric acid that accounts for described refined rosin gross mass 1% in polyester reaction process, temperature of reaction at 260°C, and the reaction time was 3 hours to obtain a se...

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Abstract

The invention discloses a hot-melt pressure-sensitive adhesive, relating to the technical fields of chemistry and chemical engineering. The hot-melt pressure-sensitive adhesive comprises the following compositions in parts by weight: 30-40 parts of light-colored liquid resin, 90-100 parts of a styrene-vinylidene segmented copolymer, 4-5 parts of a mixed plasticizer, 2-5 parts of an antioxidant N-dibutylamino zinc dithiocarbamate and 9-10 parts of a filling agent. According to the hot-melt pressure-sensitive adhesive, the light-colored liquid resin is introduced as thickening agent resin, so that the disadvantages that domestic petroleum resin is high in price, and raw materials are not regenerable are solved, the use levels of a softening agent and a viscosity modifier are reduced, and the cost is further saved; furthermore, the preparation process is easily controlled, the emission of pollutant is completely avoided, the safety and the environmental friendliness are guaranteed, a green production idea is realized, and various indexes can meet various performance requirements of the hot-melt pressure-sensitive adhesive in which rosin resin is utilized as the thickening agent.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a hot-melt pressure-sensitive adhesive. Background technique [0002] At present, traditional solvent-based pressure-sensitive adhesives take a long time to dry, are expensive, and seriously pollute the environment during construction, endangering the health of construction workers. Therefore, the more commonly used tackifier resins include petroleum resins, terpene resins, and polyester resins. Synthetic materials such as resins are tackifiers, but polyamide resins and polyester resins have relatively complicated production processes, and few domestic manufacturers are involved in this field, while terpene resins are based on turpentine oil, and the price is relatively high, so it is not suitable for large-scale use. Petroleum resin is the most widely used. Since petroleum is a non-renewable resource, as the supply becomes less and less, it is inevitab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J193/04C09J11/06C08J3/09C08L93/04C09F1/04
Inventor 林琳
Owner GUANGXI ZHONGCHANG RESIN
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