Method for Preparing Aqueous Polyacrylate Modified Polyurethane Dispersions聚丙烯酸酯改性聚氨酯水性分散體的制備方法自交聯型水性聚丙烯酸酯/聚氨酯雜化分散體的製備方法
A novel method is disclosed for the preparation of an aqueous polyacrylate modified polyurethane dispersion. The preparation method includes three main steps: (a) preparation of polyacrylates polymer or copolymer without using cationic surfactants; (b) preparation of polyurethane prepolymer with carboxylic groups and neutralization treatment to the carboxylic groups; (c) Dispersion and chain-extention of polyurethane prepolymer by adding the polyacrylate emulsion (a) into the polyurethane prepolymer (b) under vigorous agitation, or other mechanical operation. The weight ratio of dried polyacrylate to polyurethane is in the range of 10:90 ~ 90:10.
1. No volatile organics in the products
2. Simplified procedures to produce the products
3. Good properties of the products
4. Attractive balance of price and properties
- The invention will provide a method to prepare environmental friendly coatings without volatile organic solvents, especially used as woodenware coatings
Patent Number: CN101429270B
Application Number: CN200810169501A
Inventor: LIU, Zhi-meng | YUAN, Cai-deng | CHEN, Guo-hua | LI, Zong-jin | ZHANG, Xi-xiang
Priority Date: 2 Oct 2007
Priority Number: CN101429270B
Application Date: 6 Oct 2008
Publication Date: 10 Apr 2013
IPC Current: C08G001862 | C08G001810
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Method for preparing aqueous polyacrylate modified polyurethane dispersions | Preparation method of polyacrylate modified polyurethane aqueous dispersoid
Usefulness: Method for preparing aqueous polyacrylate modified polyurethane dispersions | Preparation method of polyacrylate modified polyurethane aqueous dispersoid
Summary: (I) is useful in the fields of coatings, preferably woodenware coatings, adhesives and ink industries. (I) is useful to make coatings (interior and/or exterior coating e.g. plastics coatings for vehicles), adhesives, and films for porous and non-porous substrates such as papers, non-woven materials, textiles, leather, wood, concrete, masonry, metals with or without primer, plastics (e.g. polypropylene, polyester and polyurethane), house wrap and other building materials, fiberglass, polymeric articles, personal protective equipment (such as hazardous material protective apparel including face masks, medical drapes and gowns, and firemen's turnout gear).
Novelty: Preparing aqueous polyacrylate modified polyurethane dispersion, useful in e.g. ink industries, comprises preparing polyacrylate emulsion and polyurethane prepolymer; and dispersing and extending the prepolymer with polyacrylate emulsion
Architecture/Construction
Interior Fixtures and Applications
6 Oct 2008
Chinese 200810169501.7
Chinese ZL200810169501.7
TTC.PA.354, TTC.PA.371
Hong Kong
