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Modified polyurethane adhesive for TPR shoe sole treatment-free and preparation method of modified polyurethane adhesive

A polyurethane adhesive, treatment-free technology, applied in adhesives, grafted polymer adhesives, shoe soles, etc., can solve the problems of high VOC emissions, time-consuming, labor-intensive, etc.

Inactive Publication Date: 2020-10-23
惠州市亨迪树脂制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] An object of the present invention is to provide a modified polyurethane adhesive that can be exempted from processing and directly coated with TPR soles, so as to solve the more complicated problem that TPR soles in the industry need to be coated with a treatment agent first, dried, and then coated with polyurethane adhesives. time-consuming, labor-intensive, and VOC emissions

Method used

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  • Modified polyurethane adhesive for TPR shoe sole treatment-free and preparation method of modified polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]After mixing 285kg PBA and 15kg NISSO-PB G-2000 (average hydroxyl value 38.5), dehydrate at 110°C, vacuum degree 0.08Mpa, stirring speed 120r / min for 120min, cool down to 70-80°C, pump 300kg methyl ethyl ketone , add HDI19.92kg, then add 40g T12, control 70~95℃, react for 60min; add 300kg butanone, then add 450g 1,4-butanediol, keep chain extension reaction at 70~90℃ for 100min; add 300kg butane Ketone, then add 450g triethanolamine, chain extension and cross-linking reaction at 70-90°C for 55min; add 200kg dimethyl carbonate, 30kg HEMA, react at about 70°C for 60min; add 200kg ethyl acetate and 10kg MMA, stir evenly, Then add 280g BPO, carry out grafting and copolymerization at about 70°C for about 170min, and the viscosity is 4500cps; cool down to 40°C, add 100g BHT and 260kg acetone, and stir well to obtain the modified polyurethane adhesive with a solid content of 17.0 %.

Embodiment 2

[0039] Mix 290kg PBA (hydroxyl value 37.5) and 10kg NISSO-PB G-1000 (average hydroxyl value 38.8) and dehydrate at 110°C, vacuum degree 0.08Mpa, stirring speed 120r / min for 120min, cool down to 70-80°C, Pump in 300kg butanone, start stirring, add HDI 20.10kg, then add 50g T12, control 70-95°C, react for 65min; add 300kg butanone, then add 500g 1,4-butanediol, keep at 70-90°C Chain extension reaction for 110 minutes; add 300kg butanone, then add 500g triethanolamine, chain extension and crosslinking reaction at 70-90°C for 55 minutes, add 200kg dimethyl carbonate, 28kg HEMA, react at about 70°C for 60 minutes; add 180kg ethyl acetate Ester and 9.35kg MMA, stir evenly, then add 300g BPO, carry out grafting and copolymerization reaction at about 70°C for about 180min, viscosity is 5000cps; cool down to 40°C, add 120g BHT and 403kg acetone to obtain the modified polyurethane adhesive , and its solid content is 16.0%.

Embodiment 3

[0041] The difference between this embodiment and Example 1 is that the dosages of PBA and NISSO-PB G-2000 in this formula are 282kg and 18kg respectively (average hydroxyl value 38.7), T12 is 40g; HDI is 20.37kg; 1,3- The dosage of butanediol and triethanolamine is 480g; the grafting and copolymerization reaction time is 180min, the viscosity is 4800cps; the dosage of acetone is 370kg; the solid content of the finished product is 16.2%.

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Abstract

The invention provides a modified polyurethane adhesive for TPR shoe sole treatment-free. The modified polyurethane adhesive is prepared from the following components in percentage by mass: 16.0 to 17.0 percent of a solid component and 83.0 to 84.0 percent of a solvent; before reaction, the solid component is composed of the following components in percentage by mass of the total solid: 77.95-80.80% of BASF PALAMOLL 646, 2.79-4.98% of hydroxyl-terminated polybutadien, 0.011-0.014% of dibutyltin dilaurate catalyst, 5.51-5.63% of hexamethylene diisocyanate, 0.25-0.33% of a dihydroxy chain extender and a trihydroxy chain extender, 7.80%-8.30% of hydroxyethyl methacrylate, 2.60%-3.30% of methyl methacrylate, 0.077%-0.084% of a peroxide initiator, and 0.028%-0.033% of an antioxidant; wherein the solvent is prepared from the following components in percentage by mass: 58.4 to 62.5 percent of butanone, 10.6 to 11.4 percent of dimethyl carbonate, 9.6 to 11.4 percent of ethyl acetate and 14.8 to 21.4 percent of acetone. The prepared modified polyurethane adhesive can be directly applied to TPR soles without being coated with a TPR treating agent, and has great economic value and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of polyurethane adhesive preparation, in particular to a preparation method of a modified polyurethane adhesive used for TPR shoe soles without treatment and directly coated with glue. Background technique [0002] TPR is a thermoplastic material based on SBS or SEBS, adding resins (such as PP, PS), fillers, plasticizing oil, etc., and other functional additives. The TPR material used in shoe soles is generally based on SBS. Due to its advantages of both rubber and plastic, the processing technology is simple, no vulcanization is required, it can be injection molded after heating, and the price is cheaper than rubber. In recent years, it has become more and more popular. Widely used in the soles of sports shoes, casual shoes and fashion shoes. [0003] Polyurethane adhesives have excellent initial adhesion, peel strength and heat aging resistance. At present, whether at home or abroad, they are the preferre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/08C08F283/00C08F220/14C08G18/66C08G18/12C08G18/42C08G18/69C08G18/67C08G18/32A43B13/32
CPCA43B13/32C08F220/14C08F283/008C08G18/12C08G18/4238C08G18/664C08G18/6655C08G18/672C08G18/698C08G2170/90C09J151/08C08G18/3206C08G18/3281
Inventor 曹高华张逢君
Owner 惠州市亨迪树脂制品有限公司