Water-soluble polyester suitable for polyester filament-fabric soft coating and preparation method of water-soluble polyester

Abstract

The invention discloses a water-soluble polyester suitable for polyester filament-fabric soft coating. The water-soluble polyester is characterized by consisting of the following raw materials in percentage by mass: 40-45% of aliphatic binary acid, 10% of aromatic binary acid, 15% of 5-sulfoisophthalic acid monosodium salt; 5% of tri-functional binary acid and 25% of dihydric alcohol. Compared with the prior art, the water-soluble polyester has the advantages that the water-soluble polyester has extremely high adhesive force with dacron, the water resistance can meet use requirements, synthetic monomers are wide, and the hand feeling is easy to control. The water-soluble polyester provided by the invention can be used for replacing solvent-based polyurethane filament-fabric soft coatings which is used in a large scale at present. According to statistics, China is the biggest spinning power in the world, and the required amount of polyester filament-fabric soft coating glue is one hundred thousand tons to one hundred and fifty thousand tons. Therefore, popularization of the water-soluble polyester provided by the invention has a very considerable economic benefit and profound environmental protection significance.

Description

technical field [0001] The invention relates to water-soluble polyester, in particular to a water-soluble polyester suitable for soft coating of polyester filament fabric and a preparation method thereof. Background technique [0002] Textile coating glue, also known as textile coating finishing agent, is a polymer compound evenly coated on the surface of the fabric. By bonding to the surface of the fabric to form one or more layers of film, it can not only improve the appearance and style of the fabric, but also Endow the fabric with waterproof, breathable, flame retardant, deodorant, shading and other functions. There are many types of coating adhesives, as long as there are 1. Polyacrylate (PA); 2. Polyurethane (PU); 3. Polyvinyl chloride (PVC); 4. Silicone; 5. Synthetic rubber (such as chlorine butyl rubber). [0003] The soft coating adhesives currently applied to polyester filament fabrics are mainly polyacrylates and polyurethanes. According to the different medium...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. The product of this solution contains 2%-5% of unreacted monomers, which has a bad smell and some pollution; 2. Poor elasticity and difficult to adjust the hand feeling

The disadvantages are: 1. The finished product of this program contains a small amount (about 2%) of unreacted monomers, which has certain pollution; 2. Low adhesion to polyester and poor water resistance

[0006] Polyester filament fabrics are currently divided into two categories: polyacrylate (PA) and polyurethane in the field of coating glue system. The defect is that the finished product contains a small amount of unreacted monomer, which has certain pollution. Poor water resistance, failing to meet the requirements for the use of coating adhesives, which limits the development of water-based coating adhesives for a long time