Cross-linking agent, polyurethane prepolymer and one-component polyurethane adhesive

A technology of polyurethane prepolymer and crosslinking agent, which is applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of high mechanical performance and tensile performance, and achieve high mechanical performance and huge application Excellent value and overall performance
CN111909337AActive Publication Date: 2020-11-10GUANGZHOU BAIYUN CHEM IND
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGZHOU BAIYUN CHEM IND
Publication Date
2020-11-10

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Abstract

The present invention relates to a cross-linking agent, wherein the main component of which is rotaxane comprising a long-chain axis molecule and at least one cyclic molecule that encloses the axis molecule, wherein the rotaxane introduces side chains or tail chains containing active hydrogen groups to at least two parts of the cyclic molecule and to long-chain parts, located on the two sides of the cyclic molecule, of the axial molecule respectively, and the total number of the active hydrogen groups is at least four. The invention further relates to a polyurethane prepolymer and a one-component polyurethane adhesive.
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Description

technical field

[0001] The invention relates to the technical field of adhesives, in particular to a crosslinking agent, a polyurethane prepolymer and a one-component polyurethane adhesive. Background technique

[0002] Polyurethane adhesives have the advantages of adjustable hardness, low temperature resistance, good flexibility, and high bonding strength. They can bond metals, non-metals and other materials. They are more and more widely used and are very important for commerce and industry. s material. Traditional one-component polyurethane adhesives usually consist of polyurethane resins, fillers and other additives. Among them, the resin part is often prepared by reacting polyether polyol, polyester polyol, chain extender or multifunctional crosslinking agent with isocyanate raw materials, and the molecular structure is often adjusted by the ratio of soft and hard segments, supplemented by auxiliary Agents and fillers are used to adjust the mechanical properties to me...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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