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

Resin composition for powder coatings

A technology of resin composition and powder coating, applied in the direction of powder coating, polyester coating, coating, etc., which can solve the problems of fluoropolymer resin incompatibility, coating quality reduction and weather resistance, etc.

Pending Publication Date: 2021-08-06
ARKEMA FRANCE SA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such amorphous polyester resins are not compatible with fluoropolymer resins, which leads to heterogeneous blends when the two resins are mixed
This incompatibility limits the amount of fluoropolymer resin that can be brought into the resin blend, resulting in coatings with reduced quality and weatherability

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
  • Resin composition for powder coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] Compound A to Compound D were prepared as follows:

[0157] -Compound A:

[0158] PVDF homopolymer with a melting point of 169°C and a melt viscosity of 6kPo,

[0159] OH-functional semi-crystalline polyester (polybutylene succinate) with an OH functionality (or hydroxyl value) of 30 to 45 mgKOH / g, a melting point of 110 °C, a heat of fusion of 20.9 J / g and <1 Pa.s the melt viscosity of

[0160] · Crosslinker (Vestagon B-1530, Evonik), and

[0161] ·TiO 2 Pigment (CR95, Ishihara)

[0162] Blending at 140°C with a weight ratio of 52.5 / 19.6 / 2.9 / 25;

[0163] -Compound B:

[0164] PVDF homopolymer with a melting point of 169°C and a melt viscosity of 6kPo,

[0165] OH-functional semi-crystalline polyester (polybutylene succinate) with an OH functionality of 30 to 45 mgKOH / g, a melting point of 110° C., a heat of fusion of 20.9 J / g and a melt viscosity of <1 Pa.s,

[0166] · Crosslinker (Vestagon B-1530, Evonik),

[0167] · Benzoin, and

[0168] ·TiO 2 Pigment (CR...

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
melting pointaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
enthalpy of fusionaaaaaaaaaa
Login to View More

Abstract

The invention relates to a resin composition comprising a blend of: a) 10 to 90% by weight of at least one fluoropolymer resin and b) 90 to 10% by weight of at least one semi-crystalline polyester resin, based on the total weight of the fluoropolymer resin and semi-crystalline polymer resin. The invention also relates to a method for producing such resin composition, to a powder coating composition comprising such resin composition and to the use of such resin composition, in particular for architectural powder coating.

Description

technical field [0001] The present invention relates to novel resin compositions based on fluoropolymers and semi-crystalline polyester resins useful for powder coatings, and to methods for producing such compositions. Background technique [0002] Due to increasing concerns about environmental pollution, the coatings industry is moving towards being free of volatile organic compounds (VOC). [0003] Powder coating is an environmentally promising technology because it does not contain any VOCs and does not require exhaust gas or wastewater treatment. Additionally, excess material can be recovered. [0004] Powder coatings based on acrylic, polyester and epoxy resins have been used in the past, but they exhibited poor weather resistance. [0005] Fluoropolymer based coatings, on the other hand, are weather resistant. However, fluoropolymers are difficult to grind into powders, and coating materials containing fluorinated resins generally contain water or solvents and are n...

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): C08G63/16C08L27/12C08L67/02C08L27/16C09D127/12C09D127/16
CPCC09D127/16C09D167/00C09D5/03C08K2003/2241C08L67/02C08L27/16C08K5/0025C08K3/22C09D167/02C09D5/031C09D5/033
Inventor 福山雄大马修·开普洛萨缪尔·戴维斯安东尼·诺盖斯路易斯·卡萨德沃
Owner ARKEMA FRANCE SA