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

Inorganic coating composition regulated by pH value and its preparation method and use

An adjustment method and technology of inorganic coatings, applied in the direction of coatings, etc., can solve the problems of reduced hardness, weather resistance and heat resistance, shortening the effective use time of coatings, and short effective use time.

Active Publication Date: 2008-04-02
大韩精细陶瓷涂饰剂株式会社
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] South Korea's "Special 1999-0007963" also stated a coating composition that can be cured at room temperature and heat cured, and introduced oligomer solutions of hydrolyzed alkoxysilane (alkoxy silane) and copolymers of acrylate and methacrylate The method of using acrylic resin, but this method has a short effective use time due to the change of pH value, and reduces hardness, weather resistance and heat resistance due to the inclusion of a large amount of organic substances
[0007] Most of the coatings of hydrolyzed alkoxysilane in the above inorganic coating composition have a pH value in the acidic-weakly acidic range, which will lead to continued polycondensation and shorten the effective use time of the coating, thus bringing difficulties to the construction

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
  • Inorganic coating composition regulated by pH value and its preparation method and use
  • Inorganic coating composition regulated by pH value and its preparation method and use
  • Inorganic coating composition regulated by pH value and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Assuming the use of H with a pKa value of around 6.1 2 CO 3 (carbonic acid) to prepare a buffer solution with a pH value=6.8, then carbonic acid is based on pKa value=6.1 with H 2 CO 3 and HCO 3 - Two forms exist, here H 2 CO 3 is the conjugate acid, HCO 3 - is the conjugate base.

[0028]

[0029] Acids with the above relationship are called conjugate acids, and acid radicals are called conjugate bases. When mixing the same amount of conjugate acid (a chemical species (ion or neutral molecule) that can donate a proton to an acid group) and conjugate base (a chemical species that can accept a proton (neutral molecule or ion)), the buffer solution The pH value is the same as the pKa value. That is, H 2 CO 3 and HCO 3 - When the amount of the same, the pH value becomes 6.1 which is the same as the pKa value, and in order to prepare a buffer solution with a pH value of 6.8, there are more conjugate bases than conjugate acids. How much more can be calc...

Embodiment 2

[0035] Organic acid + alkaline metal or alkaline earth metal can be used as another buffer solution. Assuming that acetic acid and its salts are used to prepare a buffer solution with a pH value of 6.8, after preparing 100ml of acetic acid solution with a conjugate acid of 0.1M and 100ml of its salt with 0.1M sodium acetate solution, slowly set any solution as a reference solution. Pour into the remaining solution and adjust the pH to 6.8.

[0036] A solution containing both substances neutralizes the acid or acid radicals of the pigment or filler that are slowly expelled from the paint.

[0037]

[0038] If acid is added to the paint with buffer solution added, due to the added H + with CH 3 COO - react to form CH 3 COOH, so the pH of the solution remains almost constant.

[0039] CH 3 COO - +H + →CH 3 COOH

[0040] If acid radicals are added to the buffer solution, the added OH - with H 3 o + A neutralization reaction occurs to make H 3 o + decrease, so...

Embodiment 3

[0050] Put colloidal silica, colloidal alumina and organic acid into alkoxysilane, then hydrolyze, then add half of all alcohol (methanol, isopropanol, ethanol), and put fillers (inorganic antibacterial materials, Inorganic corrosion inhibitors, other fillers) and pigments are then stirred with a ball mill, sand mill, etc. to make the average particle size less than 10 μm, and then cleaned with the remaining 1 / 2 alcohol, poured into the buffer solution and stirred thoroughly so as not to produce sediment. If the average particle size is 10 μm or more, the decoration and stain resistance will be lowered, so stirring is performed when the composition is applied so as not to generate deposits.

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
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides an inorganic coating composition capable of drying at ordinary temperatures which has an increased pot life as compared to that of an inorganic coating composition formed by the hydrolysis of an alkoxysilane, and a decreased curing time as compared to that of the inorganic composition, and can be dried at an ordinary temperature, and further can be dried by any one without particular restriction, a process for its production and its use. The inorganic coating composition capable of drying at ordinary temperatures containing 1-40 wt.% of an organoalkoxysilane shown by the general formula: RnSi(OR1)4-n, 0.5-20 wt.% of a colloid oxide converted as a solid in water or an organic solvent as a dispersing medium, 0.1-70 wt.% of an aliphatic lower alcohol, 0.1-3 wt.% of an organic or an inorganic acid, 0.01-20 wt.% of an inorganic filler, 0.01-40 wt.% of an inorganic pigment, and 0.1-5 wt.% of a pH stabilizer which is composed of an alkaline solution and / or a buffer solution.

Description

technical field [0001] The present invention relates to an inorganic coating composition which is dried at normal temperature by adjusting the pH value and its preparation method and application, especially relates to a coating formed on the surface of metal, non-metal, glass, plastic, cement, slate, etc. A high-quality inorganic coating composition for film coating of interior and exterior decoration materials for buildings, a preparation method and application thereof. Background technique [0002] In general, by applying and hardening inorganic coatings on the surface of metals such as stainless steel and aluminum alloys, and cement, glass, plastics, and paper, it provides beautiful decoration, heat resistance, weather resistance, stain resistance, high hardness, Functional coatings with water resistance, adhesiveness, corrosion resistance, durability, cold and heat resistance, etc. have been popularized and applied in various fields. 64-168" and South Korea's "Special 2...

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): C09D1/00C09D7/80
CPCC08K3/16C08K3/24C08K3/28C08K3/34C08K3/36C08K5/05C08K5/09C08K2003/2227C08K2003/309C08K2003/329C08K2003/387C09D5/00C09D7/61C09D7/63C09D7/80C09D183/04
Inventor 金贞夏李镕珍
Owner 大韩精细陶瓷涂饰剂株式会社
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com