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Coated substrates and methods of preparing the same

A substrate and coating technology, applied in the direction of coating, primer, electrophoretic plating, etc., can solve the problems of low film forming rate, weakening, and inability to obtain characteristics or characteristics.

Pending Publication Date: 2021-04-09
PPG IND OHIO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compositions that form these coatings often spill over edges and corners, resulting in low film formation around these areas
As a result, the coatings are detached from the edges and corners of the substrate, where the properties conferred by these coatings are not available or diminished

Method used

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  • Coated substrates and methods of preparing the same
  • Coated substrates and methods of preparing the same
  • Coated substrates and methods of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

example 1 and example 2

[0119] Preparation and Application of Treatment Solution Containing Catalyst

[0120] A catalyst-containing solution was first prepared from the components listed in Table 1.

[0121] Table 1

[0122]

[0123] 1 Triethylenediamine catalyst, commercially available from Evonik Industries.

[0124] 2 Nonionic surfactants commercially available from DOW.

[0125] 3 Hydrotropes, nonionic surfactant solubilizers and electrostatic agents are commercially available from Alfa Chemicals.

[0126] Example 1 and Example 2 were weighed into separate containers and mixed with a wooden spatula until uniform.

example 3

[0128] Preparation of Liquid Coating Compositions

[0129] Liquid coating compositions were prepared from the ingredients listed in Table 2. The components of the liquid coating composition were added in the order listed, stirring with a wooden spatula after each addition.

[0130] Table 2

[0131]

[0132] 4 Pentafunctional acrylate, commercially available from Allnex.

[0133] 5 Dimethicone flow additive commercially available from BYK-Chemie GMBH.

[0134] 6 Hydroxyphenyl triazine UV absorber, commercially available from BASF.

[0135] 7 A hindered amine light stabilizer, commercially available from BASF.

[0136] 8 5% by weight solution of triethylenediamine in n-butyl acetate.

[0137] 9 Pentaerythritol tetrakis(3-mercaptopropionate), commercially available from BRUNO BOCK Chemische Fabrik GmdH & Co. KG.

example 4

[0139] Preparation and evaluation of coated substrates

[0140] Half of the 4 inch by 12 inch split metal panels were immersed in the treatment solutions of Examples 1 and 2 for 1 minute. After removal, dry the submerged section using a forced-air hand dryer. The panels were then coated with the formulation of Example 3 on both sides of the panels using a Devilbiss HVLP gun equipped with a 1.4 mm nozzle and 30 psi pressure. The resulting panels were then cured at room temperature for 24 hours.

[0141] The coated substrates were tested by the R-value test previously described herein. The average edge coverage of each coated substrate was also tested.

[0142] Edge coverage was tested using FE-SEM analysis. For edge coverage testing, small squares were cut from each panel's unfinished areas (upper right and upper left) and areas treated with a panel cutter (lower right and left edges) and placed in epoxy In resin overnight. Once cured, the base was sanded, polished, and p...

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Abstract

The present invention relates to a substrate having (a) a first material applied to at least a portion of the substrate, and (b) a coating layer deposited from a liquid coating composition including a film-forming resin, and optionally a crosslinker that is reactive with the film-forming resin, in direct contact with at least a portion of the substrate to which the first material has been applied. The first material is (i) a catalyst that catalyzes cure of the liquid coating composition, (ii) a component reactive with the film-forming resin and / or the crosslinker of the liquid coating composition, and / or (iii) a rheology modifier.

Description

technical field [0001] The present invention relates to substrates and methods of treating substrates, sealing substrate surfaces, reducing sag resistance, improving adhesion and improving edge coverage. Background technique [0002] Coatings are applied to substrates to impart a variety of properties including protective and decorative properties. These coatings are usually applied over the entire surface of the substrate, including edges and corners. However, the compositions forming these coatings often spill over edges and corners, resulting in low film formation around these areas. As a result, the coatings are detached from the edges and corners of the substrate, where the properties imparted by these coatings are not available or are diminished. Accordingly, it would be desirable to provide coated substrates with improved paint coverage at edges and corners. Contents of the invention [0003] The present invention relates to a substrate comprising: (a) a first ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/12C25D13/20C25D13/22C09D5/10B05D1/18B05D1/36B05D1/00B05D7/14B05D1/06
CPCB05D1/06B05D1/18B05D1/36B05D7/14B05D1/60C25D13/12C25D13/20C25D13/22B05D7/54C09D5/002C09D5/4411C09D5/4465C09D5/4496C25D13/04
Inventor T·J·拉里默J·R·施奈德A·M·沙瑟尔B·E·伍德沃斯J·J·马丁S·J·莱蒙C·D·尼埃德斯特C·J·德多迈尼克B·C·奥克伯格S·R·扎瓦奇
Owner PPG IND OHIO INC