Coating material for aluminum substrate for inkjet computer-to-plate and preparation and use of same

Patent metadata

Field	Value
Publication number	US-9493672-B2
Application number	US-201214232610-A
Country	US
Kind code	B2
Filing date	Jul 12, 2012
Priority date	Jul 13, 2011
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A coating material for an aluminum substrate for inkjet computer-to-plate and preparation method and use of same. The composition of the coating material is: high polymer 5-40 wt %; nano-sized and/or micro-sized oxide particles 5-30 wt %; organic solvent constituting the remainder. The high polymer is at least one selected from the group consisting of MMA-BMA-MA terpolymer resin, phenolic resin, epoxy resin, polyurethane, polyester, urea-formaldehyde resin, polyvinyl formal, polyvinyl butyral and gum arabic. The preparation method for obtaining the coating material is to mix the ingredients together and stir at room temperature. A spin coating method or a roll coating method is used to coat the coating material onto a clean aluminum substrate having not undergone electrolytic graining and anodic oxidation treatment, and then the substrate is baked, resulting in the required roughness.

First claim

What is claimed is:

1. A method for preparing an aluminum substrate for inkjet computer-to-plate, comprising applying coating material onto surface of a clean aluminum plate having not undergone electrolytic graining and anodic oxidation treatment by spin coating or roll coating, followed by baking, so as to make the surface of the aluminum plate have a required roughness, based on total weight of the coating material, the coating material consists of:

polymer
5-40 wt %

nano-size and/or micron-size oxide particle
5-30 wt %

organic solvent
balance

the polymer is at least one selected from the group consisting of novolac resin, epoxy resin, polyester, and urea-formaldehyde resin.

2. The method according to claim 1 , wherein the nano-size and/or micron-size oxide particle has an average particle size in a range of 5 nm to 3,000 nm.

3. The method according to claim 1 , wherein the oxide is at least one selected from the group consisting of zinc oxide, alumina, titania, silica, cadmium oxide, ceria and zirconium oxide.

4. The method according to claim 1 , wherein the organic solvent is at least one selected from the group consisting of ester, acetone, butanone, methanol, ethanol, 1-propanol, 2-propanol, 2-butanol, 2-methyl-2-propanol, alkane, toluene, ethylene glycol monoethyl ether, ethylene glycol methyl ether, propylene glycol methyl ether, diethyl ether, N-methyl pyrrolidone and tetrahydrofuran.

5. The method according to claim 4 , wherein the ester is at least one selected from the group consisting of methyl acetate, ethyl formate, propyl formate, ethyl acetate and butyl acetate.

6. The method according to claim 4 , wherein the alkane is at least one selected from the group consisting of n-heptane, n-hexane, n-pentane and cyclohexane.

Assignees

• Song Yanlin
• Yang Ming
• Zhou Haihua
• Yang Lianming
• Li Gang
• Inst Chemistry Cas

Inventors

• Song Yanlin
• Yang Ming
• Zhou Haihua
• Yang Lianming
• Li Gang

Classifications

• C09D105/00 Primary

  Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00 · CPC title

• C09D133/10

  Homopolymers or copolymers of methacrylic acid esters · CPC title

• C09D131/04

  Homopolymers or copolymers of vinyl acetate · CPC title

• C09D167/00

  Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09D177/12; based on polyester-imides C09D179/08); Coating compositions based on derivatives of such polymers · CPC title

• C08K2003/2227

  of aluminium · CPC title