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

High-solid finishing varnish for automobiles, and preparation method and application thereof

A technology for overcoating varnishes and automobiles, applied in coatings, polyester coatings, etc., to achieve the effects of bright colors, reduced VOC emissions, and simple construction process

Active Publication Date: 2021-04-02
TIANJIN COLOROAD COATING & CHEM
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the solid content of ordinary automotive finish varnish is only 45-48%, and the VOC emission is close to 550g / L, which cannot meet the requirements.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-solid finishing varnish for automobiles, and preparation method and application thereof
  • High-solid finishing varnish for automobiles, and preparation method and application thereof
  • High-solid finishing varnish for automobiles, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Ratio of main raw materials:

[0066] (1) Pre-dispersion of anti-sagging additives

[0067] n-Butanol 60

[0068] Anti-sag additive BYK-415 40

[0069] (2) Harmonize

[0070] High solid thermosetting acrylic resin DSM 7066 52.5

[0071] High solid polyester resin DSM 946 10.5

[0072] High degree of etherification n-butanol etherified amino resin CYMEL1156 18.23

[0073] 150#Aromatics 5

[0074] DBE 5

[0075] Acid catalyst CYCAT 4045 0.1

[0076] Leveling agent BYK-310 0.2

[0077] Leveling agent BYK-358N 0.5

[0078] UV absorber Tinuvin 400 0.8

[0079] Pre-dispersed anti-sag additive 5

[0080] Xylene 2.02

[0081] Conductive additive CCB 0.15

Embodiment 2

[0083] (1) Pre-dispersion of anti-sagging additives

[0084] n-Butanol 60

[0085] Anti-sag additive BYK-415 40

[0086] (2) Harmonize

[0087] High solid thermosetting acrylic resin DSM 7066 46.67

[0088] High solid polyester resin DSM 946 9.33

[0089] High degree of etherification n-butanol etherified amino resin CYMEL1156 24.31

[0090] 150#Aromatics 5

[0091] DBE 5

[0092] Acid catalyst CYCAT 4045 0.2

[0093] Leveling agent BYK-310 0.2

[0094] Leveling agent BYK-358N 0.5

[0095] UV absorber Tinuvin 400 0.8

[0096] Pre-dispersed anti-sag additive 5

[0097] Xylene 2.87

[0098] Conductive additive CCB 0.12

Embodiment 1-2

[0099] The preparation method of embodiment 1-2 high-solid automotive finish varnish:

[0100] (1) Anti-sagging additives and dispersion:

[0101] Add n-butanol into the stainless steel basin according to the formula amount, stir at a low speed (300-500 rpm), then slowly add the anti-sag additive BYK-415 according to the formula amount, and then change the stirring to a high speed (1200- 1500 rev / min), stir for 30 minutes and stop stirring for later use.

[0102] (2) Paint mixing: Add various raw materials in the following order

[0103] Add high-solid thermosetting acrylic resin DSM7066 into the paint mixing tank, turn on low-speed stirring (300-500 rpm), add high-solid polyester resin DSM946, high-etherification degree n-butanol etherification amino resin CYMEL1156, 150# Aromatic hydrocarbons, DBE, acid catalyst CYCAT 4045, leveling agent BYK-310, leveling agent BYK-358N, ultraviolet absorber Tinuvin 400, after adding, change to high-speed stirring (1200-1500 rpm), and the...

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-solid finishing varnish for automobiles. The high-solid finishing varnish is composed of high-solid acrylic resin, high-solid polyester resin, high-etherification-degree n-butyl alcohol etherified amino resin, an acid catalyst, an anti-sagging auxiliary agent, a leveling agent, an ultraviolet light absorber, a conductive auxiliary agent and an organic solvent. The high-solid acrylic resin and the high-etherification-degree n-butyl alcohol etherified amino resin are subjected to a cross-linking reaction to obtain a good paint film appearance and excellent aging resistance; the high-etherification-degree n-butyl alcohol etherified amino resin is selected, so that paint diseases such as prickly heat and the like caused by wet construction with metal base paintcan be avoided, and the high-etherification-degree n-butyl alcohol etherified amino resin has the same construction solid content as the completely-methylated amino resin; the high-solid polyester resin is added to improve the toughness of the paint film; by adding the anti-sagging aid, the problem of paint film sagging can be solved, and particularly, the paint has the characteristics of high solid content and low viscosity, and can meet the VOC emission requirement that the paint for coating is less than or equal to 350g / L.

Description

technical field [0001] The invention belongs to the technical field of paint and its production technology, and relates to a high-solid automotive varnish composed of high-solid acrylic resin, high-solid polyester resin and high-etherification degree n-butanol etherified amino resin and a preparation method thereof. Background technique [0002] In order to meet the requirements of the national environmental protection law, the VOC emission of paint used in automobile painting should be less than or equal to 420g / L. At present, the solid content of ordinary automotive finish varnish is only 45-48%, and the VOC emission is close to 550g / L, which is not satisfactory. At present, environmental protection regulations are becoming more and more strict on the VOC emission control of automotive coatings. In the next few years, the VOC limit of 420g / L will not meet the requirements of the regulations. Therefore, we have developed high-solid automotive varnishes, and make VOC emissio...

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 Applications(China)
IPC IPC(8): C09D133/04C09D167/00C09D161/32C09D7/65
CPCC08L2205/03C09D133/04C09D7/65C08L67/00C08L61/32
Inventor 高鹏李妲蔡洪军高岩李伟赵琳
Owner TIANJIN COLOROAD COATING & CHEM