Unlock instant, AI-driven research and patent intelligence for your innovation.

High Adhesion Primer Coatings

A high-adhesion, primer technology, used in primers, polyester coatings, coatings, etc., can solve the problem that coatings cannot be sprayed with other types of coatings

Active Publication Date: 2020-10-27
HUNAN SOKAN NEW MATERIAL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-adhesion primer coating to solve the problem that existing coatings cannot have excellent adhesion on commonly used metal, macromolecule and inorganic non-metal substrates, and at the same time cannot be sprayed on the formed coating Technical issues of other types of coatings

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] Preferably, the preparation method of hyperbranched modified polyester resin comprises the following steps:

[0034] S1, trimethylolpropane and 2,2-dimethylolpropionic acid monomer react under the action of a catalyst to obtain aliphatic hyperbranched polyester;

[0035] S2, the terminal graft anhydride of the aliphatic hyperbranched polyester obtained in step S1, obtain the hyperbranched polyester containing terminal carboxyl group;

[0036] S3. Add carboxylamine heterocyclic alcohol to the hyperbranched polyester containing carboxyl-terminated polyester obtained in step S2, and obtain a hyperbranched modified polyester resin through esterification.

[0037] The above method for preparing the hyperbranched modified polyester resin has mild reaction conditions, few reaction steps, short preparation time, and the obtained hyperbranched modified polyester resin has high purity. In the above preparation method, the carbon amine heterocyclic alcohol can be 1-(2-hydroxyethy...

Embodiment 1

[0048] In the present embodiment, the preparation method of hyperbranched modified polyester resin is as follows:

[0049] S1. Trimethylolpropane and 2,2-dimethylolpropionic acid monomers with a molar ratio of 1:1 were used as raw materials, and p-toluenesulfonic acid was used as a catalyst to react at 150°C for 5 hours to obtain aliphatic hyperbranched polyester ;

[0050] S2, grafting succinic anhydride at the end of the above-mentioned aliphatic hyperbranched polyester, the molar ratio of the raw materials is 1: 12, the reaction temperature is 90 ° C, DMF is used as a solvent, and the progress of the reaction is confirmed by acid value titration. When the acid value Stop reaction when being half of the initial value, obtain the hyperbranched polyester containing terminal carboxyl group;

[0051] S3, using the above-mentioned hyperbranched polyester containing carboxyl groups as raw materials, add 1-(2-hydroxyethyl)-4-methyl-2-imidazolidinone, the molar ratio of the two is ...

Embodiment 2

[0066] In the present embodiment, the high adhesion primer paint comprises the following components in parts by weight: 50 parts by weight of modified weak hydroxyl acrylic resin, 30 parts by weight of hyperbranched modified polyester resin prepared in Example 1, 2 parts by weight Parts of fumed silica, 30 parts by weight of diacetone alcohol. The above coatings are transparent high adhesion primer coatings.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a high-adhesion primer. The primer is prepared from the following components in parts by weight: 20-60 parts of modified weak hydroxyl acrylic resin, 10-50 parts of hyperbranched modified polyester resin, 0-5 parts of fumed silica, 10-40 parts of a diluent and 0-50 parts of pigment, wherein the hyperbranched modified polyester resin contains a carboamine heterocyclic group.The high-adhesion primer contains the hyperbranched modified polyester resin, and the carboamine heterocyclic group in the structure has high polarity and has good wettability and adhesion to a substrate; the hyperbranched structure and the carboamine heterocyclic group in the hyperbranched modified polyester resin ensure excellent adhesion of the primer to most organic and inorganic materials and excellent water resistance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a primer coating with high adhesion. Background technique [0002] Coatings occupy an important position in the market of 3C electronic products, daily necessities, decorations, etc., and generally play a protective and decorative role. The prerequisite for all this is that the coating has stable adhesion on the surface of the product substrate. At present, there are various types of substrates used in the market. In terms of categories, there are metals, polymers, inorganic non-metals, etc.; iron, stainless steel, aluminum, magnesium-aluminum alloys, etc. are commonly used in metal materials; commonly used in polymer materials There are PC, PA, ABS, PC+ABS, PC+GF, PA+GF, PPS, PPSU, PAEK, PBT, PET, etc.; glass, ceramics, etc. are commonly used in inorganic non-metallic materials; but there is no one on the market. The model can be used in commonly used above-mentioned metals (iron, stain...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D167/00C09D7/61C09D7/20
CPCC09D5/002C09D133/00C09D7/20C09D7/61C08L67/00C08K3/36
Inventor 邓勇李平李玉良王卫国缪培凯吕国强杨波凌云剑
Owner HUNAN SOKAN NEW MATERIAL