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Polyurethane resin for solvent-free adhesion, and preparation process thereof

A polyurethane resin and solvent-free technology, applied in the field of solvent-free adhesive polyurethane resin and its preparation process, can solve the problems of polluting the environment and harming human health, and achieve the advantages of simple preparation process, saving resources, and reducing production and raw material costs. Effect

Inactive Publication Date: 2017-05-31
SUZHOU FUREN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a polyurethane resin for solvent-free bonding and its preparation process to solve the problems that the existing polyurethane resin contains organic solvents, pollutes the environment, and damages human health

Method used

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Examples

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Embodiment Construction

[0023] In order to further understand the content, features and effects of the present invention, the following examples are given to describe the present invention in detail.

[0024] A solvent-free adhesive polyurethane resin, comprising the following components by weight percentage:

[0025] Polyester polyol 35-45%,

[0026] Polyether polyol 35-45%,

[0027] Ethylene glycol 0-1%,

[0028] Butanediol 0-1%,

[0029] Toluene diisocyanate 5-15%,

[0030] 4,4-Diphenylmethane diisocyanate 5-15%,

[0031] Based tin catalyst 0-0.05%,

[0032] Auxiliary 0.1-0.5%.

[0033] The polyester polyol is one or more of ethylene glycol diethylene adipate, butylene adipate or pentylene adipate.

[0034] The polyether polyol is one of polytetramethylene ether glycol or polypropylene glycol or a mixture of both.

[0035] The auxiliary agent is one or more of antioxidants, resin stabilizers or anti-yellowing agents.

[0036] The molecular weight of the polyester polyol is 2000-3000.

[...

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PUM

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Abstract

The present invention relates to the technical field of chemical industry, particularly to a polyurethane resin for solvent-free adhesion, and a preparation process thereof, wherein the polyurethane resin comprises, by weight, 35-45% of polyester polyol, 35-45% of polyether polyol, 0-1% of ethylene glycol, 0-1% of butylene glycol, 5-15% of toluene diisocyanate, 5-15% of 4,4-diphenylmethane diisocyanate, 0-0.05% of an organic tin catalyst, and 0.1-0.5% of an auxiliary agent. According to the present invention, the polyurethane resin for solvent-free adhesion does not require the addition of any organic solvents, does not produce any solvents and solvent evaporation during the whole production processing process, and further has characteristics of simple preparation process, source saving, production cost reducing, raw material cost reducing, no pollution, health, green environmental protection, wide application prospect, and use value.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a polyurethane resin for solvent-free bonding and a preparation process thereof. Background technique [0002] At present, the country's call for environmental protection is getting stronger and stronger, and reducing environmental pollution has become the development goal of various enterprises, especially for the chemical industry. Traditional polyurethane resins used for bonding contain more or less organic solvents, and in the process of production and processing, it is necessary to add diluting solvents to adjust the viscosity. When drying, the organic solvents will volatilize into the air, which not only pollutes the environment , damage human health, and waste resources. As the current environmental problems are becoming more and more serious, the use of solvent-free polyurethane resins to replace solvent-based polyurethane resins has emerged as the times requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/08C08G18/76C08G18/66C08G18/48C08G18/42
Inventor 陈志明
Owner SUZHOU FUREN CHEM