In-Situ Radiation Polymerization of Core-Shell Waterborne Polyurethane-Acrylate Emulsion

Abstract

The invention discloses a method for polymerizing core-shell type aqueous polyurethane-polyacrylate (PUA) emulsion by in-situ radiation, relating to the production method and process which are applied to textiles coating agent products. The method possesses the advantages of in-situ emulsion polymerization and radiation polymerization during product preparation process, solving the problems that the emulsifier and organic cosolvents existing in the current products pollute the environment, the products are poor in water resistance, the polymerization rate is hardly controlled, and the products are not stable among production batches, etc. The products have the following advantages of excellent water resistance, heat resistance, resistance to chemicals and wear resistance as well as low cost, availability for textile printing adhesion auxiliaries, emission without emulsifier and volatile organic solvents, and compliance with the requirements of environmental protection.

Description

technical field [0001] The invention relates to a production method and process applied to textile coating agent products, in particular to a core-shell type waterborne polyurethane-acrylate emulsion in-situ radiation polymerization method. Background technique [0002] According to the statistics of the National Development and Reform Commission, in 2007, the total amount of fiber processing in my country was close to 35 million tons. Based on the current consumption ratio of printing and dyeing coating agents and fibers in my country at 3%, in 2007 alone, the output value of printing and dyeing coating agents can reach 2-3 billion RMB. With the development of the textile industry, technological progress and the launch of new products, it will inevitably drive the further development of printing and dyeing coating agents. [0003] Traditional printing and dyeing coating agents are mainly solvent-based, containing a large amount of organic aromatic solvents such as toluene a...

AI Technical Summary

Problems solved by technology

[0008] The polyurethane-acrylic ester composite emulsion and its preparation method proposed in Chinese patent 200710147402.4 utilize IPN technology to synthesize the network interpenetrating emulsion. Although a product with high performance has been obtained, because there is no chemical bond between polyurethane and polyacrylate, the stability is not good. Well, the function of each component is limited

Chinese Patent Application No. 200810019023.1 proposes a method for radiation polymerization of water-based polyurethane-acrylate emulsion that combines the performance advantages of polyurethane and water-based polyurethane, adopts radiation polymerization at room temperature, and the reaction process is easy to control, but it still needs to introduce acetone and about The emulsifier Pingpinga 0, which accounts for 3% of the acrylate monomer, does not meet the requirements of environmental protection. Pingpinga 0 is an inorganic emulsifier that does not participate in the reaction, and eventually remains in the emulsion, affecting the water resistance of the emulsion.