Adhesive for corrugated paper and preparation method thereof

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By using adhesives prepared by raw materials such as polycaprolactone diol, toluene diisocyanate, etc., a dense network structure is formed through crosslinking and cassava flour filling, the problem of insufficient viscosity and bonding strength of existing pit paper adhesives is solved, and higher adhesive strength and durability are achieved.

CN116200162BActive Publication Date: 2025-03-21DONGGUAN XIETAI PAPER PROD CO LTD

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Patent Information

Application Number: CN202310217773.4
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2023-03-08
Publication Date: 2025-03-21
Estimated Expiration: 2043-03-08

Application Information

Patent Timeline

08 Mar 2023

Application

CN202310217773.4

21 Mar 2025

Publication

CN116200162B

IPC: C09J175/06; C09J11/04; C08G18/76; C08G18/66; C08G18/42; C08G18/58; C08G18/32; C08G18/64; C08G18/12; C08B31/00; C08F283/00; C08F220/20; D21H27/40; B32B29/08

CPC: C09J175/06; C09J11/04; C08G18/7621; C08G18/6644; C08G18/4277; C08G18/58; C08G18/3206; C08G18/6484

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Application Domain

Non-macromolecular adhesive additives Special paper

Technical Efficacy Phrases

Excellent adhesiongood adhesiveness

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AI Technical Summary

Technical Problem

The viscosity and bond strength of existing adhesives for pit paper are low, making it difficult to meet the high-efficiency adhesive requirements for pit paper.

Method used

The raw materials such as polycaprolactone diol, toluene diisocyanate, crosslinking agent, chain extender, epoxy resin, cassava flour and polymerization liquid are used to form a dense interpenetrating network structure through mixing reaction and crosslinking, and the adhesive bonding performance of the adhesive is improved through the filling of cassava flour.

Benefits of technology

It significantly improves the adhesive strength, low temperature resistance, flexibility and aging resistance, making it more suitable for adhesive applications of pit paper.

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Abstract

The present invention relates to the field of corrugated paper preparation, and in particular to an adhesive for corrugated paper and a preparation method thereof, which mainly comprises the following raw materials in parts by weight: 30-60 parts of polycaprolactone diol, 15-25 parts of toluene diisocyanate, 3-8 parts of a cross-linking agent, 5-10 parts of a chain extender, 2-3 parts of dibutyltin dilaurate, 5-10 parts of cassava flour, 3-5 parts of a polymer solution, and 10-15 parts of an epoxy resin. The present invention has the advantage of improving the strength of the adhesive for corrugated paper.

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