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

Aqueous binder solutions

a binder solution and solution technology, applied in the direction of coatings, priming paints, etc., can solve the problem that the binder resin is completely insoluble in water

Inactive Publication Date: 2016-12-01
THE CHEMOURS CO FC LLC
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The proposed solvent system allows for the creation of stable, environmentally friendly binder solutions that maintain adhesion and abrasion resistance performance comparable to NMP-based systems, enabling efficient application and curing of fluoropolymer coatings on various substrates.

Problems solved by technology

Unfortunately, these binder resins are completely insoluble in water.

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

Examples

Experimental program
Comparison scheme
Effect test

examples

Aqueous Resin Solutions

[0053]The procedure for preparing an aqueous polyamideimide-based primer or polyether imide-based primer or one-coat system is as follows:

[0054]In order to make polyamideimide soluble in water, and thereby capable of being used in an aqueous-based coating, the polyamideimide was first converted to a polyamic acid-amine salt. The raw PAI powder was reacted with an amine, most commonly with a tertiary amine such as triethylamine, at an elevated temperature, between 35-65° C. for a period of 6 hours, in a mixture of water and the candidate solvent, wherein the latter serves to catalyze / accelerate the reaction. This process creates a water soluble resin of amine-neutralized polyamic acid.

[0055]The amine-neutralized polyamic acid was added into a mixing vessel containing water and with a paddle stirrer. The amine-neutralized polyamic acid was added and stirred with a paddle stirrer (room temperature) until fully dissolved and uniform to ensure solubility. If desire...

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
temperaturesaaaaaaaaaa
temperaturesaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The present invention is directed to aqueous systems for polyamideimide, polyether imide, and / or polyamic acid binder solutions. The present invention provides stable aqueous binder solutions equivalent or superior to current aqueous binder solutions.

Description

[0001]FIELD OF INVENTION[0002]The field of invention is related to alternate solvent systems for polyethersulfone, polyamideimide, polyether imide, polyimide, and / or polyamic acid binder solutions.BACKGROUND OF INVENTION[0003]Fluoropolymers have found use in many non-stick and release coating applications such as, for example, non-stick coatings for cookware. However, due to the non-stick nature of perfluoropolymers, primer layers having binders are generally needed to adhere to a surface of a substrate prior to application of the fluoropolymers, to enable sufficient adhesion of the fluoropolymer to the substrate. In the art, binder compositions comprising polyethersulfones (PES) or polyamideimides (PAI) or polyetherimides (PEI) or polyimides (PI), or combinations thereof, have been found to be useful in primer layers as film formers and for adhering to both the substrate surface and with perfluoropolymers.[0004]Current binder compositions utilize N-methylpyrrolidone (NMP) as solven...

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(United States)
IPC IPC(8): C09D7/00C09D179/08C09D5/00
CPCC09D7/001C09D179/08C09D5/002C08G73/10C08G73/1046C08G73/14C09D7/20C09D181/06
Inventor REYNOLDS, RICHARD ALAN
Owner THE CHEMOURS CO FC LLC