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

Coating composition with easy-to-clean performance

A composition and coating technology, applied in polyester coatings, coatings, etc., can solve problems such as low compatibility and difficulty in finding solvents

Active Publication Date: 2022-04-12
AKZO NOBEL COATINGS INT BV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to incorporate it into coating compositions because of its low compatibility with other resins (e.g. polyesters, polyacrylates, polyurethanes)
It is also difficult to find suitable solvents as it is only soluble in solvents containing halogens

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
  • Coating composition with easy-to-clean performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: the preparation of polyester

[0075] A mixture of 0.1 parts of dibutyltin dilaurate, 33.3 parts of diglyme, 26.8 parts of Fluorolink E10H, and 6.7 parts of TMA was added to the reactor, stirred and heated to 120°C under a nitrogen atmosphere. The reaction was allowed to proceed until the solution was clear. 21.6 parts of Cardura E10P were added to the reaction mixture and the temperature was raised to 130°C. The reaction was allowed to proceed until the acid number was below 8 mg KOH / g. 11.5 parts of ε-caprolactone were added to the reactor and the temperature was raised to 160°C. The reaction was allowed to proceed for 4 hours, after which time the reaction mixture was cooled to 50 °C.

[0076] The resulting polyester has an M of 3768 n , based on solids, an acid value of 8 mg KOH / g or less and an OH value of 59.6 mg KOH / g. The solids content of the solution was 66.6% by weight.

Embodiment 2

[0077] Embodiment 2: the preparation of coating composition

[0078] Three coating compositions have been prepared using the polyester synthesized in Example 1 as an additive present in amounts of 0% (comparative), 0.5% by weight and 1% by weight. The amounts are given in Table 1 in parts by weight.

[0079] Table 1

[0080] 0% additives 0.5% additive 1% additive base resin Resin 3261 68 68 68 hardener Cymel 303 12 12 12 catalyst p-Toluenesulfonic acid 0.2 0.2 0.2 pigment cobalt chromite 8 8 8 filler TiO 2

Embodiment 3

[0081] Example 3: Coated panels

[0082] Coat panel AZ100 (zinc / aluminum alloy coated steel) to a dry film thickness of 5 μm with the commercially available Cr-free primer APW9R406445 from AkzoNobel first by passing RDS 12" coat thickness wire. Pass RDS 22" coat thickness Wires The coating composition prepared in Example 2 was applied as a topcoat to a dry film thickness of 15 μm. The panel was then baked in an oven at 270°C for 33 sec, at a peak metal temperature of 232°C.

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
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
Login to View More

Abstract

The present invention relates to hydroxyl-functional polyesters containing perfluoropolyether blocks prepared by a process comprising the steps of a) subjecting a carboxyl-terminated perfluoropolyether C to a reaction with an epoxy-functional compound D, and b) subjecting the reaction product of step a) to a reaction with a lactone E. The polyesters thus prepared can be used in coating compositions further comprising (b) an OH-functional or epoxy-functional resin, and (c) a hardener comprising a group reactive to the OH or epoxy functional groups of resin (b).

Description

technical field [0001] The present invention relates to coating compositions having easy-to-clean properties. These coatings are particularly suitable for use in the fields of consumer electronics, automotive interiors and exterior and interior architectural design. Background technique [0002] In the field of consumer electronics devices such as mobile phones, tablet computers, laptop computers and automotive interiors, various substrates such as plastics, metals and glass are used. These substrates are usually covered with easy-to-clean and stain-resistant coatings. Easy to clean means that the surface is water, oil and / or stain repellent. Easy-to-clean coatings reduce or eliminate the need to clean surfaces. [0003] It is known in the art that fluorinated polymers, especially perfluoropolyethers (PFPE), have non-stick and lubricious properties and can be used to create easy-to-clean coatings. However, it is difficult to incorporate it into coating compositions becau...

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): C08G63/682C09D7/65
CPCC08G63/6822C09D167/04C08G63/664C08G63/08C08G63/66C08G63/682C09D167/025
Inventor 王建辉徐正林吕歆谢立柱杜征臻骆勇邵黎敏
Owner AKZO NOBEL COATINGS INT BV