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High-solid-content thermoplastic waterborne polyurethane emulsion and preparation method thereof

A technology of water-based polyurethane with high solid content, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problems of low solid content of emulsion, resistance to hydrolysis, complicated preparation, etc., and achieve low temperature hot melting Good resistance, poor hydrolysis resistance, simple preparation method

Pending Publication Date: 2022-01-07
LIAONING FIXED STAR FINE CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the present invention provides a high solid content thermoplastic water-based polyurethane emulsion and its preparation method to solve the existing water-based polyurethane adhesives that have complex preparation, low emulsion solid content, no cold resistance, no hydrolysis resistance, etc.

Method used

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  • High-solid-content thermoplastic waterborne polyurethane emulsion and preparation method thereof
  • High-solid-content thermoplastic waterborne polyurethane emulsion and preparation method thereof
  • High-solid-content thermoplastic waterborne polyurethane emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation Example 1 A high solids aqueous polyurethane emulsion of the thermoplastic embodiment

[0038] HDI trimer selected NCO content (21.8 ± 0.3)% Wanhua Chemical Company;

[0039] Polytetramethylene ether glycol selected number-average molecular weight of polytetramethylene ether glycol of 2000;

[0040] Polycarbonate diols selected number average molecular weight of polycarbonate diol of 1000;

[0041] Chain extenders chain extender is hydroxy sulfonates, number average molecular weight of 270, the product selected from a double bond Chemical Co. Taiwan;

[0042] Small molecule chain extender selected hydrazine hydrate;

[0043] Catalyst selection of America's leading chemical company organic bismuth catalysts BiCAT 8118

[0044] raw material:

[0045] Isophorone diisocyanate (IPDI) 55 parts

[0046] 20 parts of HDI trimer

[0047] Polytetramethylene ether glycol 30 parts

[0048] 100 parts of polycarbonate diol

[0049] 2 parts of neopentyl glycol

[0050] 0.2 parts...

Embodiment 2

[0066] Example 2 Preparation of a high solids content of the aqueous polyurethane emulsion of the thermoplastic embodiment

[0067] HDI trimer selected NCO content (21.8 ± 0.3)% Wanhua Chemical Company;

[0068] Polytetramethylene ether glycol selected number-average molecular weight of polytetramethylene ether glycol of 2000;

[0069] Polycarbonate diols selected number-average molecular weight of polycarbonate diol of 2000;

[0070] The chain extender is a hydroxy sulfonate chain extender having a number average molecular weight of 450, the product selected from a double bond Chemical Co. Taiwan;

[0071] Select a small molecule chain extender isophorone diamine;

[0072] Catalyst selection of America's leading chemical company organic bismuth catalysts BiCAT 8124.

[0073] raw material:

[0074] Isophorone diisocyanate (IPDI) 55 parts

[0075] 25 parts of HDI trimer

[0076] Polytetramethylene ether glycol 30 parts

[0077] 110 parts of polycarbonate diol

[0078] 2 parts of ne...

Embodiment 3

[0095] Example 3 Preparation of a high solids content of the aqueous polyurethane emulsion of the thermoplastic embodiment

[0096] HDI trimer selected NCO content (21.8 ± 0.3)% Wanhua Chemical Company;

[0097] Polytetramethylene ether glycol selected number-average molecular weight of polytetramethylene ether glycol of 1500;

[0098] Polycarbonate diols selected number average molecular weight of polycarbonate diol of 1000;

[0099] Chain extenders chain extender is hydroxy sulfonates, number average molecular weight of 270, the product selected from a double bond Chemical Co. Taiwan;

[0100] Select a small molecule chain extender 2.3 parts of hydrazine hydrate and 4.5 parts of isophoronediamine mixed solution;

[0101] Catalyst selection of America's leading chemical company organic bismuth catalysts BiCAT 8108.

[0102] raw material:

[0103] Isophorone diisocyanate (IPDI) 60 parts

[0104] 20 parts of HDI trimer

[0105] Polytetramethylene ether glycol 40 parts

[0106] 90 p...

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Abstract

The invention discloses a high-solid-content thermoplastic waterborne polyurethane emulsion and a preparation method thereof, and particularly relates to the field of textile adhesives. The emulsion is prepared from the following raw materials: isophorone diisocyanate, HDI (hexamethylene diisocyanate) tripolymer, polytetramethylene ether glycol, polycarbonate diol, neopentyl glycol, a catalyst, a chain extender, acetone, a small molecule chain extender and deionized water through prepolymerization, chain extension, dispersion, secondary chain extension and emulsion reaction. The preparation method of the high-solid-content thermoplastic waterborne polyurethane emulsion is simple, the solid content of the prepared waterborne polyurethane emulsion reaches 50%, the prepared waterborne polyurethane emulsion is soft in hand feeling and good in cold resistance, solvent resistance and hydrolysis resistance, and the technical problems that a film formed at the high temperature is dry and comfortable and the low-temperature hot melting property is good can be solved.

Description

Technical field [0001] The present invention relates to the field of textile adhesive, particularly relates to a high solids content of the thermoplastic polyurethane aqueous emulsion and preparation method thereof. Background technique [0002] Waterborne polyurethane is a novel polyurethane system with water substitute organic solvent as a dispersion medium, also known as water dispersion polyurethane, aqueous polyurethane or aqueous polyurethane. Aqueous polyurethane water as solvent, non-polluting, safe and reliable, excellent mechanical properties, good compatibility, etc. easily modified. [0003] Currently bonding between the fabrics on the market mostly hot melt powder, hot melt adhesive based products, high speed bonding, adhesive fastness, but the hot melt adhesive, hot-melt powder on the limitations of large products performance, influenced by the weather, solvent resistance, hydrolysis resistance and the difference in the production process needs to be equipped with s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C08G18/12C08G18/44C08G18/48C08G18/66C08G18/75C08G18/79C09J175/08
CPCC08G18/12C08G18/6618C08G18/4018C08G18/4854C08G18/44C08G18/755C08G18/792C09J175/08C08G18/3855C08G18/3231C08G18/3234C08G18/3228
Inventor 陈剑冰鞠镭唐丽李瑶曲文婕孙海娥
Owner LIAONING FIXED STAR FINE CHEM
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