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Chlorinated polypropylene-modified acrylic resin having excellent interlayer adhesion force and preparation method thereof

A chlorinated polypropylene and interlayer adhesion technology, applied in the field of polymers, can solve the problems of reduced water boiling resistance, easy drop in the adhesion between primer and topcoat layers, etc., to improve surface tension and improve interlayer Adhesion, the effect of less chain transfer reaction

Active Publication Date: 2019-03-01
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the existing technical conditions, the primer prepared by using chlorinated polypropylene modified acrylic resin can significantly improve the adhesion between the primer coating and the substrate. The introduction of the primer layer, the interlayer adhesion between the primer and the topcoat layer is easy to decrease; in the prior art, the interlayer adhesion can be increased by increasing the polarity of the primer layer (introducing polar monomers)
However, after the introduction of polar monomers, the water resistance of the coating, especially the water boiling resistance, will be reduced.

Method used

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  • Chlorinated polypropylene-modified acrylic resin having excellent interlayer adhesion force and preparation method thereof
  • Chlorinated polypropylene-modified acrylic resin having excellent interlayer adhesion force and preparation method thereof
  • Chlorinated polypropylene-modified acrylic resin having excellent interlayer adhesion force and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion in this embodiment is made from the following raw materials:

[0040] 7.5g hydroxypropyl acrylate, 9.5g 4-tert-butylcyclohexyl acrylate, 0.25g azobisisobutyronitrile, 0.25g dibenzoyl peroxide, 20g methyl methacrylate, 12.5g butyl acrylate, 30g xylene , 10g butyl acetate, 10g chlorinated polypropylene resin 16-LP.

[0041] The preparation method of the chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion in this embodiment comprises the following steps:

[0042] 1) Stir and mix 7.5g hydroxypropyl acrylate, 9.5g 4-tert-butylcyclohexyl acrylate and 0.25g azobisisobutyronitrile to obtain mixed monomer A; mix 20g methyl methacrylate, 12.5g butyl acrylate Ester and 0.25g dibenzoyl peroxide were stirred and mixed evenly to obtain mixed monomer B;

[0043] 2) In a flask equipped with a dropping funnel, a thermometer, a condenser and a stirring device, add 30g...

Embodiment 2

[0045] The chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion in this embodiment is made from the following raw materials:

[0046]4.9g hydroxypropyl acrylate, 20g 4-tert-butylcyclohexyl methacrylate, 0.05g azobisisobutyronitrile, 0.05g di-tert-butyl peroxide, 10g methyl methacrylate, 5g butyl acrylate, 30g di Toluene, 20g butyl acetate, 10g chlorinated polypropylene resin PP 803MWS.

[0047] The present embodiment has the preparation method of the chlorinated polypropylene modified acrylic resin of excellent interlayer adhesion, comprises the following steps:

[0048] 1) Stir and mix 4.9g hydroxypropyl acrylate, 20g 4-tert-butylcyclohexyl methacrylate, and 0.05g azobisisobutyronitrile to obtain mixed monomer A; mix 10g methyl methacrylate, 5g butyl acrylate, 0.05g di-tert-butyl peroxide was stirred and mixed uniformly to obtain mixed monomer B;

[0049] 2) In the flask equipped with dropping funnel, thermometer, condenser and stirring device...

Embodiment 3

[0051] The chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion in this embodiment is made from the following raw materials:

[0052] 3g hydroxypropyl acrylate, 2g hydroxyethyl methacrylate, 16g isobornyl methacrylate, 1g azobisisoheptanonitrile, 3g dibenzoyl peroxide, 25g methyl methacrylate, 25g butyl acrylate, 20g xylene, 5g chlorinated polypropylene resin 16-LP.

[0053] The preparation method of the chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion in this embodiment comprises the following steps:

[0054] 1) Stir and mix 3g hydroxypropyl acrylate, 2g hydroxyethyl methacrylate, 16g isobornyl methacrylate and 1g azobisisoheptanonitrile to obtain mixed monomer A; mix 25g methyl methacrylate, 25g of butyl acrylate and 3g of dibenzoyl peroxide were stirred and mixed uniformly to obtain the mixed monomer B;

[0055] 2) In a flask equipped with a dropping funnel, a thermometer, a condenser and a stirring device,...

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Abstract

The invention relates to the technical field of polymers, and particularly relates to chlorinated polypropylene-modified acrylic resin having excellent interlayer adhesion force and a preparation method thereof. The chlorinated polypropylene-modified acrylic resin is prepared from, by mass, 20-50% of a cosolvent, 5-20% of the chlorinated polypropylene, 3-15% of a polar monomer, 5-20% of a functional monomer, 0.05-3% of an initiator A, 15-50% of a vinyl monomer, and 0.05-3% of an initiator B. By grafting copolymerization of the chlorinated polypropylene and acrylic resin and introducing the polar monomer and functional monomer into resin, the resin is enhanced in polarity, so that the interlayer adhesion force of an undercoat, prepared by the synthetic resin, and a finishing coat layer; through a two-step dropwise adding method, the polar group and a naphthenic functional group, having strong hydrophobicity and large steric hindrance, are polymerized, so that the resin, on the basis ofthe excellent adhesion force, has excellent anti-water-boiling performance.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a chlorinated polypropylene modified acrylic resin with excellent interlayer adhesion and a preparation method thereof. Background technique [0002] The polypropylene material is a non-polar substrate, and the coating has poor adhesion on the polypropylene substrate. Currently, chlorinated polypropylene modified acrylic resins are usually used as film-forming resins to improve the adhesion of coatings to polypropylene substrates. Under the existing technical conditions, the primer prepared by using chlorinated polypropylene modified acrylic resin can significantly improve the adhesion between the primer coating and the substrate. The introduction of the component, the interlayer adhesion of the primer and the topcoat layer is easy to decrease; in the prior art, the interlayer adhesion can be increased by increasing the polarity of the primer layer (introducing polar monomers)....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F220/14C08F220/18C08F4/04C08F4/34C09D151/06
CPCC09D151/06C08F4/04C08F4/34C08F255/023C08F220/1811C08F220/1804
Inventor 张玉兴许飞庄振宇何庆迪戚剑苟小青曹亚成胡中周丽彭少雄王木立陈卫东张汉青祝宝英刘明
Owner CHINA NAT OFFSHORE OIL CORP
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