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Terpolymer-modified neoprene latex adhesive and preparation method thereof

A ternary copolymerization modification, chloroprene latex technology, used in mineral oil hydrocarbon copolymer adhesives, adhesives, graft polymer adhesives, etc., can solve the problem of high film-forming temperature of rubber particles and limited bonding materials , weak adhesion and other problems, to achieve the effect of reducing the film forming temperature, increasing the initial viscosity and lowering the synthesis temperature

Active Publication Date: 2014-09-03
重庆中科力泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the production process of the physical blending type is simple, the bonding materials are limited, and the adhesion to some new decorative materials such as polymer boards and wood-plastic boards is weak, and the storage stability is not good.
CR-MMA graft modified latex improves the adhesive force of the adhesive to many materials. However, due to the high rigidity of the PMMA structure and the high film-forming temperature of the colloidal particles, the initial viscosity of the latex is difficult to meet the use requirements when the temperature is low. As Latex adhesives are limited in use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: the preparation of the chloroprene latex adhesive 1 of ternary copolymerization modification

[0018] Raw material formula:

[0019] Neoprene latex 100kg, methyl methacrylate 10kg, butyl acrylate 10kg, emulsifier (sodium dodecylbenzenesulfonate) 0.5kg, catalyst (the catalyst is potassium persulfate-sodium bisulfite redox, and The mass ratio of the oxidizing agent component to the reducing agent component of the catalyst is 1:1) 0.2kg, thickening emulsion (petroleum resin emulsion) 10kg, anti-aging agent (aqueous solution of N-phenyl-β-naphthylamine) 0.5kg, Thickener (polyvinyl alcohol) 0.5kg, preservative 0.1kg and zinc oxide 2kg.

[0020] Concrete preparation steps are as follows:

[0021] (1) In the reactor with agitator, condenser and dropping funnel, first add neoprene latex, then add emulsifier, stir for 5 minutes, then add methyl methacrylate, butyl acrylate and catalyst, in Heated to 40°C under normal pressure, stirred and reacted for 4 hours, a...

Embodiment 2

[0025] Embodiment 2: the preparation of the neoprene latex adhesive 2 of ternary copolymerization modification

[0026] Raw material formula:

[0027] Chloroprene latex 100kg, methyl methacrylate 40kg, butyl acrylate 50kg, emulsifier (sodium lauryl sulfate and secondary paraffin sodium sulfonate are the mixture of 1:2 by weight) 5kg, catalyst (the Catalyst is dibenzoyl peroxide-N, N-xylidine redox, and the oxidant component of described catalyzer and reducing agent component mass ratio are 1.5:1) 3kg, viscosifying emulsion (terpene-phenolic resin emulsion) 25kg, anti-aging agent (aqueous solution of N-phenyl-β-naphthylamine) 2kg, thickener (polyvinyl alcohol) 2kg, preservative 0.5kg and zinc oxide 5kg.

[0028] Concrete preparation steps are as follows:

[0029] (1) In the reactor with agitator, condenser and dropping funnel, first add neoprene latex, then add emulsifier, stir for 5 minutes, then add methyl methacrylate, butyl acrylate and catalyst, in Heated to 50°C unde...

Embodiment 3

[0033] Embodiment 3: the preparation of the chloroprene latex adhesive 3 of ternary copolymerization modification

[0034] Raw material formula:

[0035] Weigh neoprene latex 100kg, methyl methacrylate 90kg, butyl acrylate 90kg, emulsifier (octylphenol polyoxyethylene ether) 8kg, catalyzer (described catalyzer is hydroxy dicumyl peroxide) by weight —Tetraethylenepentamine redox, and the oxidant component of described catalyst and reducing agent component mass ratio are 2:1) 5kg, viscosifying emulsion (rosin emulsion) 50kg, antioxidant (N-phenyl-β-naphthalene Aqueous solution of amine) 2kg, thickener (polyvinyl alcohol) 4kg, preservative 1kg and zinc oxide 8kg.

[0036] Concrete preparation steps are as follows:

[0037] (1) In the reactor with agitator, condenser and dropping funnel, first add neoprene latex, then add emulsifier, stir for 5 minutes, then add methyl methacrylate, butyl acrylate and catalyst, in Heated to 60°C under normal pressure, stirred and reacted for ...

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Abstract

The invention relates to a terpolymer-modified neoprene latex adhesive and a preparation method thereof. The adhesive comprises the following components in parts by weight: 100 parts of neoprene latex, 10-90 parts of methyl methacrylate, 10-90 parts of butyl acrylate, 0.5-8 parts of emulsifier, 0.2-5 parts of catalyst, 10-50 parts of tackifying emulsion, 0.5-2 parts of anti-aging agent, 0.5-4 parts of thickener, 0.1-1 part of preservative and 2-8 parts of zinc oxide. The prepared adhesive has obviously lower film-forming temperature and higher initial viscosity, and satisfies the operating requirements of various climates. By adopting the redox catalytic system, the adhesive has the advantages of low synthesis temperature and high grafting ratio.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a three-component copolymerized modified neoprene latex adhesive and a preparation method thereof. Background technique [0002] A large number of solvent-based universal adhesives are used in the market for decoration and woodworking furniture production. According to the composition, they are divided into neoprene universal adhesives and SBS universal adhesives, both of which have the hazards of organic solvents. [0003] Conventional chloroprene (CR) latex adhesives are divided into two categories, one is the physical blend of chloroprene latex, and the other is the chemical graft modification of chloroprene latex and methyl methacrylate (MMA). The latter is the main one, and the latter has few application reports. Although the production process of the physical blending type is simple, the bonding materials are limited, and the adhesion to some new decorative m...

Claims

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Application Information

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IPC IPC(8): C09J151/04C09J157/02C09J161/14C09J193/04C09J11/04C09J11/06C08F279/02C08F220/14C08F220/16
Inventor 李有刚冉忠祥徐林柏兴华蒋乔波秦艳梅
Owner 重庆中科力泰高分子材料有限公司
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