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Novel reactive-type polyurethane hot-melt adhesive cleaning agent

A polyurethane hot-melt adhesive, reactive technology, applied in the field of cleaning agents, can solve problems such as clogging of glue coating machinery pipelines, scrapping of conveying pipelines, and difficult to remove sediments, etc.

Active Publication Date: 2012-10-10
嘉兴市恒泰化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] What the present invention is to solve is that the existing reactive polyurethane hot melt adhesive cleaning agent generates a hard-to-remove infusible deposit during cleaning, thus appearing glue coating Problems such as blockage of the internal pipeline of the machine, scrapping of the delivery pipeline, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the weight proportion of each component is as follows:

[0031] EVA resin (ethylene-vinyl acetate copolymer resin VA>28%): 40 parts

[0032] Tackifying resin (using Korean Hyundai S-100A petroleum resin): 10 parts

[0033] Wax (using fully refined paraffin wax 60# and microcrystalline wax 80#): 50 parts

[0034] Hydroxy compound (using abietyl alcohol): 2 parts

[0035] Plasticizer (using dibutyl terephthalate): 1 part

[0036] Antioxidant 1010: 0.2 parts

[0037] The OH content in the above-mentioned hydroxyl compound should be basically consistent with the residual NCO in the hot melt adhesive to be cleaned, and can completely neutralize the residual NCO. At the same time, the addition of tackifying resins, waxes and plasticizers helps to adjust the viscosity of the system and other properties required by the cleaning glue during application.

Embodiment 2

[0038] Embodiment 2: the weight proportion of each component is as follows:

[0039] EVA resin (ethylene-vinyl acetate copolymer resin VA>28%): 45 parts

[0040] Tackifying resin (using KF-454 type rosin pentaerythritol resin): 7 parts

[0041] Wax (using polyethylene wax A227 and microcrystalline wax 60#): 48 parts

[0042] Hydroxy compound (using phenylethyl alcohol): 1.5 parts

[0043] Plasticizer (using dioctyl terephthalate): 1 part

[0044] Antioxidant 168: 0.15 parts

Embodiment 3

[0045] Embodiment 3: the weight proportion of each component is as follows:

[0046] EVA resin (ethylene-vinyl acetate copolymer resin VA=40%): 47 parts

[0047] Tackifying resin (using GA-100 modified rosin resin): 4 parts

[0048] Wax (using polyethylene wax 520 and fully refined paraffin wax 58#): 49 parts

[0049] Hydroxyl compound (using diethylene glycol): 1.5 parts

[0050]Plasticizer (using dibutyl terephthalate): 1 part

[0051] Antioxidant 168: 0.15 parts

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PUM

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Abstract

The invention relates to a novel reactive-type polyurethane hot-melt adhesive cleaning agent, which comprises the following components in percentage by weight: 20-70 percent of at least one ethylene-vinyl acetate copolymer, 1-30 percent of at least one tackifying resin, 20-70 percent of at least one wax, 1-30 percent of at least one hydroxyl compound which can be used for neutralizing stub-end NCO in a PUR (Polyurethane) hot-melt adhesive as well as a plasticizer, an antioxidant and a toner. The composition is applicable to cleaning the PUR hot-melt adhesive, can be used for thoroughly neutralizing the stub-end NCO in the PUR hot-melt adhesive and transforming the PUR adhesive into a mixture which can not subjected to any other reaction and can be dissolved into an adhesive-cleaning system.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to a cleaning agent capable of fully removing residual reactive polyurethane (PUR) hot-melt adhesives from gluing equipment during application. Background technique [0002] Reactive polyurethane hot melt adhesive is a type of adhesive that does not contain solvents and is in a solid state at room temperature. And this kind of PUR hot melt adhesive has entered various new application fields with the continuous development of technology, so that it occupies an increasing share in the adhesive industry. At the same time, the sizing equipment of PUR hot melt adhesive is gradually With the development of diversification, the thorough cleaning of sizing equipment has become a more prominent problem. [0003] Usually, the known reactive polyurethane hot melt adhesive cleaning agent is mainly composed of ethylene-vinyl acetate copolymer (EVA) mixed with other resins, and this system is not well compati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/26C11D7/24C11D7/60
Inventor 何彬刘新建韩新稳赵满堂
Owner 嘉兴市恒泰化工科技有限公司