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Polyester tackifier and adhesive composition

A technology of tackifier and composition, which is used in the manufacture of polyester tackifiers, the application field of polyester tackifiers, and can solve the problems of low viscosity and adhesive peeling performance of synthetic polymers

Inactive Publication Date: 2003-03-05
劳特公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Synthetic polymers have low tack and bond-peel performance without tackifiers in the adhesive formulation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 500 grams of Chinese gum rosin, 505 grams of phthalic anhydride and 530 grams of diethylene glycol were charged into a reaction vessel equipped with a nitrogen inlet pipe, thermometer, stirrer and rectification column. The reaction mixture was heated until a homogeneous melt was formed, then 2 grams of Vultac2 (Elf Atochem) disproportionation catalyst were added. The temperature of the reaction mixture was raised to 180°C and held for 1 hour, then the temperature was gradually increased to 250°C. The reaction was allowed to proceed at this temperature for 20 hours and was terminated when distillation of water ceased. The acid value AV of the obtained product is 22 mg KOH / g, the viscosity (Brookfield, 50° C.) is 11200 mPa.s, the number average molecular weight Mn=870, the polydispersity Mw / Mn=1.1, and the Grignard color scale is 2 .

[0050] According to the procedure described in WO9412272 (US5552519), 1500 g of the polyester resin was dispersed in water to obtain a t...

Embodiment 2

[0053] 800 grams of Chinese gum rosin, 200 grams of phthalic anhydride and 424 grams of diethylene glycol were charged into a reaction vessel equipped with a nitrogen inlet tube, a thermometer, an agitator and a rectification column. The reaction mixture was heated to raise the temperature to 180°C and held for 1 hour. The temperature of the mixture was then gradually raised to 250°C, and the reaction was allowed to proceed at this temperature for 17 hours, and the reaction was terminated when the distillation of water ceased. The acid value AV of the obtained product=20 mg KOH / gram, the viscosity (Brookfield, 50 ℃) is 5150 mPa.s, number average molecular weight Mn=560, polydispersity Mw / Mn=1.1, Grignard color scale is 4.5.

[0054] 700 grams of this polyester resin was blended with 300 grams of pentaerythritol ester of rosin. The blend was then dispersed in water with 60 grams of ethoxylated phosphate ester surfactant to give tackifier dispersion (C).

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PUM

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Abstract

The invention relates to a novel polyester tackifier, adhesive compositions comprising the tackifier and methods of preparation. More specifically, the polyester tackifier is obtainable by polymerising a mixture comprising a diacid or derivative thereof, a diol, and at least 6 molar % of an organic monofunctional compound, wherein the mixture is essentially free from compounds comprising more than two carboxylic acid groups or alcohol groups.

Description

[0001] The present invention relates to a new polyester tackifier, an adhesive composition comprising the tackifier and a method for its preparation. More specifically, polyester tackifiers are obtainable by polymerizing a mixture comprising a diacid or derivative thereof, a diol and at least 6 mole percent of an organic monofunctional compound, wherein the mixture is substantially free of two Compounds of the above carboxylic acid groups or alcohol groups. Background of the invention [0002] Synthetic polymers such as acrylic polymers have largely replaced naturally occurring substances such as animal glues, starches and vegetable glues in many adhesive applications. The key to this substitution is the development and use of tackifier resins in formulations containing synthetic polymers, since tackifier resins allow the adhesive system to readily wet the substrate surface and thus form a strong bond. Synthetic polymers have low tack and adhesive-peel performance without tac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/46C08G63/20C08G63/48C09J133/04C09J167/00C09J167/08C09J193/04
CPCC08G63/20C08G63/48C09J167/08
Inventor J·哈赞P·P·M·阿特斯
Owner 劳特公司