Water-soluble copolymer and its production process and use

   
   

The present invention provides: a novel water-soluble copolymer which is excellent in performance for uses, such as detergent builders, pigment dispersants, and scale inhibitors. In addition, the present invention provides: a novel liquid detergent builder which has extremely excellent compatibility, high transparency when a liquid detergent composition comprises it, and excellent detergency; and a novel liquid detergent composition comprising the liquid detergent builder. The water-soluble copolymer, according to the present invention, is a novel water-soluble copolymer obtained by copolymerizing comonomers essentially including: an unsaturated monocarboxylic acid monomer (1); an unsaturated dicarboxylic acid monomer (2); and an unsaturated alcoholic monomer (3) having specific structures, with the copolymer being characterized in that the residual amount of the unsaturated dicarboxylic acid monomer is not more than 8 weight %, and the residual amount of the unsaturated alcoholic monomer is not more than 45 weight %.

A invenção atual fornece: um copolymer water-soluble da novela que seja excelente no desempenho para usos, tais como construtores, dispersants do pigment, e inibidores detergentes da escala. Além, a invenção atual fornece: um construtor detergente líquido da novela que tenha a compatibilidade extremamente excelente, transparência elevada quando uma composição detergente líquida a compreender, e detergência excelente; e uma composição detergente líquida da novela que compreende o construtor detergente líquido. O copolymer water-soluble, de acordo com a invenção atual, é um copolymer water-soluble da novela obtido copolymerizing comonomers essencialmente including: um monomer ácido monocarboxylic unsaturated (1); um monomer ácido dicarboxylic unsaturated (2); e um monomer alcoólico unsaturated (3) que tem estruturas específicas, com o copolymer que está sendo caracterizado naquele a quantidade residual do monomer ácido dicarboxylic unsaturated não está a uns mais de 8 pesos %, e a quantidade residual do monomer alcoólico unsaturated não está a uns mais de 45 pesos %.

 
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