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

Antimicrobial coating composition with improved yellowing resistance

An anti-microbial and composite technology, which can be used in sanitary equipment, coatings, and biocides for toilets, and can solve problems such as yellowing of paint

Inactive Publication Date: 2018-03-27
DOW GLOBAL TECH LLC +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the silver content in the paint is at a concentration higher than 100ppm, the paint may turn yellow when exposed to sunlight

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
  • Antimicrobial coating composition with improved yellowing resistance
  • Antimicrobial coating composition with improved yellowing resistance
  • Antimicrobial coating composition with improved yellowing resistance

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] Preparation of coating composition

[0026] Preparation of coating compositions involves the selection and mixing of appropriate coating ingredients in proper proportions to provide a coating with specific processing and handling characteristics and a final dried coating film with desired properties.

[0027] Application of the coating composition

[0028] The coating composition can be applied by conventional application methods such as brushing, rolling and spraying methods such as air atomized spray, air assisted spray, airless spray, high volume low pressure spray and air assisted airless spray.

[0029] Suitable substrates for paint application include concrete, cement board, medium density fiberboard (MDF) and particle board, gypsum board, wood, stone, metal, plastic, wallpaper, and textiles, among others. Preferably, all substrates are precoated with a water-based primer or a solvent-based primer.

example

[0031] I. Raw materials

[0032] abbreviation

chemical reagent

BA

Butyl acrylate

MMA

Methyl methacrylate

(M)AA

(Methacrylate

AAA

acrylic acid

SBS

sodium bisulfate

EDTA

Ethylenediaminetetraacetic acid

t-BHP

tert-butyl hydroperoxide

MMP

3-Methylmercaptopropanal

BMA

Butyl methacrylate

MAA

Methacrylate

PEM

Phosphate ethyl methacrylate

IAA

isoascorbic acid

[0033]

[0034] II. Test procedure

[0035] 1. Determination of resistance to yellowing

[0036] The paint was calendered on the primer-coated cement board using a 200 μm Bird film applicator, followed by drying in a CTR room for 1 day. Place the dried paint film next to the glass window for sunlight. The B value of the film was measured by a BYK-Gardner color scale card spherical spectrophotometer within two weeks. The smaller the change in B value, the better the yellowing...

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
molecular weightaaaaaaaaaa
sizeaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

An antimicrobial coating composition comprises (i) a binder dispersion of (co)polymer particles and (ii) from 50ppm to 2000ppm, by dry weight based on total dry weight of the coating composition, a silver; wherein the binder dispersion comprises, as polymerized units, by dry weight based on total dry weight of the binder dispersion, (a) from 40% to 99.9% ethylenically unsaturated nonionic monomersand (b) from 0.1% to 60% phosphate group-containing (meth)acrylate monomers.

Description

technical field [0001] The present invention relates to an antimicrobial coating composition having improved resistance to yellowing. Background technique [0002] Silver ions or silver elements when used in paint formulations provide paint formulations with excellent antimicrobial properties. The higher the silver content in the paint, the better the antimicrobial performance. However, when the silver content in the paint is at a concentration higher than 100 ppm, the paint may turn yellow when exposed to sunlight. [0003] There is therefore a need in the coatings industry for antimicrobial coating compositions with high silver content and better yellowing resistance. Contents of the invention [0004] The present invention provides an antimicrobial coating composition comprising (i) a binder dispersion of (co)polymer particles and (ii) 50 ppm to 2000 ppm silver by dry weight based on the total dry weight of said coating composition; Wherein based on the total dry wei...

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): A61L2/238A61L27/34A61L27/30A61L27/32A61L27/14
CPCA61L27/34A61L27/54A61L2300/104A61L2300/404A01N59/16C08L33/04A01N25/10A01N25/22C09D7/61A61L2/22A61L2/232A61L2/238C09D5/14C09D123/0892C09D7/65C08K3/08C08L25/04C08L33/10C08L43/02C08K2003/0806
Inventor 陈军宇王涛崔陇兰T·王
Owner DOW GLOBAL TECH LLC