Universal coating adhesive and preparation method thereof

A general-purpose coating technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of different glue characteristics, achieve moderate softening point, easy to use process, smooth viscosity Sexual effect

Pending Publication Date: 2021-04-09
南通恒华粘合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the wide variety of coated substrates, such as wood-plastic wallboard, stone-plastic moldings, plastic steel, MDF, aluminum alloy, solid wood, etc., and surface materials such as PVC film, PP film, veneer, CPL, etc., it also faces a The problem is that the coating of different substrates requires different types of coating glue, and the characteristics of various glues are different, so there are many troubles in using the same glue supply equipment

Method used

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  • Universal coating adhesive and preparation method thereof

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preparation example Construction

[0092] A second aspect of the present invention provides a method for preparing a general-purpose covering glue, comprising the following steps:

[0093] (1) Add polyether polyol, acrylic resin, defoamer, and filler into reaction kettle A with high-speed dispersion characteristics, adjust the temperature to 130-150°C to melt for 2 hours, and vacuumize and dehydrate for 30 minutes;

[0094] (2) Add polyester polyol and polyurethane elastomer into reaction kettle B, adjust the temperature to 130-150°C, melt for 1-1.5 hours, and vacuum dehydrate for 30 minutes;

[0095] (3) Add an appropriate amount of the mixture in the reactor A to the reactor B, and then vacuumize, stir and dehydrate for 1 hour at 120-140°C;

[0096] (4) Cool down to 100-110°C, add macromolecular chain extender to reactor B, and vacuum dehydrate for 30 minutes;

[0097] (5) Cool down to 70°C, add isocyanate, react and defoam for 1-2 hours in the state of nitrogen, and the temperature of the whole reaction is ...

Embodiment 1

[0103] Embodiment 1 of the present invention specifically provides a general-purpose coating glue, the raw materials of the coating glue include, by weight, 15 parts of polyether polyol, 10 parts of acrylic resin, 35 parts of polyester polyol, 0.01 part of defoamer, 5 parts of polyurethane elastomer, 1 part of filler, 5 parts of chain extender, 10 parts of isocyanate, 0.03 part of catalyst;

[0104] The polyether polyol is a mixture of a polyether polyol with a functionality of 2 and a hydroxyl value of 56 mg KOH / g and a polyether polyol with a functionality of 4 and a hydroxyl value of 28 mg KOH / g, wherein the functionality is 2. The weight ratio of the polyether polyol with a hydroxyl value of 56 mg KOH / g to the polyether polyol with a functionality of 4 and a hydroxyl value of 28 mg KOH / g is 1:2;

[0105] The acrylic resin is a polar acrylic resin;

[0106] The hydroxyl content of the polar acrylic resin is 1.6%, and the acid value is 6mg KOH / g;

[0107] The polar acrylic...

Embodiment 2

[0126] Embodiment 2 of the present invention specifically provides a general-purpose coating glue, the raw materials of the coating glue include, in parts by weight, 30 parts of polyether polyol, 20 parts of acrylic resin, 70 parts of polyester polyol, 0.05 parts of defoamer, 15 parts of polyurethane elastomer, 5 parts of filler, 10 parts of chain extender, 20 parts of isocyanate, 0.1 part of catalyst;

[0127] The polyether polyol is a mixture of a polyether polyol with a functionality of 2 and a hydroxyl value of 56 mg KOH / g and a polyether polyol with a functionality of 4 and a hydroxyl value of 28 mg KOH / g, wherein the functionality is 2. The weight ratio of the polyether polyol with a hydroxyl value of 56 mg KOH / g to the polyether polyol with a functionality of 4 and a hydroxyl value of 28 mg KOH / g is 1:3;

[0128] Described acrylic resin is with embodiment 1;

[0129] Described polyester polyol comprises liquid polyester polyol, crystalline polyester polyol, amorphous p...

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Abstract

The invention relates to the technical field of coating adhesive, in particular to a universal coating adhesive and a preparation method thereof. The coating adhesive comprises the following raw materials in parts by weight: 15-30 parts of polyether polyol, 10-20 parts of acrylic resin, 35-80 parts of polyester polyol, 0.01-0.05 part of a defoaming agent, 5-15 parts of a polyurethane elastomer, 0-5 parts of a filler, 5-10 parts of a chain extender, 10-20 parts of isocyanate and 0.01-0.1 part of a catalyst. The coating adhesive disclosed by the invention can meet the requirements of coating application of various base materials, has good initial strength and later strength, and solves the problem of adhesion to wood materials, wood-plastic materials, aluminum materials and the like and problems in initial adhesion for bonding of thick film materials.

Description

technical field [0001] The invention relates to the technical field of covering glue, in particular to a general covering glue and a preparation method thereof. Background technique [0002] In the field of home building materials, the process of bonding specific irregular profiles and membrane materials with certain patterns and patterns on the surface is called coating. The coated materials are more common such as indoor wall panels and lockers. , door cover line, etc. At present, most of the polyurethane hot melt adhesives are used in the coating industry in the market. Due to the wide variety of coated substrates, such as wood-plastic wallboard, stone-plastic moldings, plastic steel, MDF, aluminum alloy, solid wood, etc., and surface materials such as PVC film, PP film, veneer, CPL, etc., it also faces a The problem is that the coating of different substrates requires different types of coating glue, and the characteristics of various glues are different, so there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C08G18/40C08G18/42C08G18/48C08G18/62
CPCC09J175/04C08G18/4018C08G18/4812C08G18/6229C08G18/4202
Inventor 陈帅
Owner 南通恒华粘合材料科技有限公司
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