Method of preparing water-based surface treatment agent and water-based surface treatment agent prepared using the same

Patent metadata

Field	Value
Publication number	US-11739476-B2
Application number	US-201816641935-A
Country	US
Kind code	B2
Filing date	Sep 11, 2018
Priority date	Sep 14, 2017
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The present invention relates to a method of preparing a water-based surface treatment agent and a water-based surface treatment agent prepared using the same. More particularly, the present invention relates to a water-based surface treatment agent used to form a surface treatment layer included in artificial leather for automobile seat covers and a method of preparing the water-based surface treatment agent. According to the present invention, when the water-based surface treatment agent is used to manufacture artificial leather, occurrence of whitening of the surface of the artificial leather may be prevented.

First claim

The invention claimed is:

1. A method of preparing a water-based surface treatment agent, comprising:
(a) adding 1 to 25 parts by weight of a curing agent (B) to 1 to 25 parts by weight of a water-based solvent (C) and performing stirring at 20 to 30° C. for 40 minutes to 5 hours;
(b) adding 1 to 10 parts by weight of a silicon compound (D), 0.1 to 0.5 parts by weight of an antifoaming agent and 0.1 to 0.5 parts by weight of a leveling agent to 100 parts by weight of a main material (A), and performing stirring at 20 to 30° C.; and
(c) adding the mixture of step (a) to the mixture of step (b) and performing stirring at 20 to 30° C. for 0.2 to 1 hour, and
wherein the water-based solvent (C) comprises water, an alcohol, or a mixture thereof,
wherein the main material (A) is a main material (A-1), wherein the main material (A-1) comprises a polyurethane having one or more functional groups selected from the group consisting of a carboxylic acid group, a hydroxyl group, an amino group, and a combination thereof per molecule, dispersed in an amount of 5 to 30% by weight in a water-based solvent, and
wherein the silicon compound (D) is a polysiloxane of a liquid form dispersed in water or a polysiloxane of a bead form, wherein a content of the polysiloxane in the silicon compound of a liquid form is 5 to 30% by weight.

2. The method according to claim 1 , wherein, in step (a), the curing agent (B) comprises one or more functional groups selected from the group consisting of an aziridine group, an isocyanate group, and a carbodiimide group per molecule.

3. The method according to claim 1 , wherein the polyurethane is a polycarbonate-based polyurethane.

Assignees

• Lg Hausys Ltd

Inventors

• Min Chul Hee
• Jung Yongbae
• Lee Inhyuk

Classifications

• D06N3/14 Primary

  with polyurethanes · CPC title

• B29C59/046

  for layered or coated substantially flat surfaces · CPC title

• B29C59/06

  using vacuum drums {(for thermoforming B29C51/225)} · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B5/024

  Woven fabric · CPC title