Abstract: PCE-type copolymers in powder form can be obtained by spry-drying and are easily re-dispersed in water. The fineness and the anti-caking properties of said PCE-type copolymers in powder form, as well as their water reduction potential and influence on slump life are improved. A production process of said PCE-type copolymers in powder form is by a spray-drying method, and PCE-type copolymers can be used for the improvement of mineral binder compositions and especially dry mortars.

Abstract: A copolymer, in particular a dispersant for hydraulically setting binder compositions, including a specific dicarboxylic acid based subunit and a specific polyalkylene glycol based subunit wherein the molar ratio of the dicarboxylic acid based subunit to the polyalkylene glycol based subunit is from 1.5-4.

Abstract: Disclosed herein are a selective breeding method of an antitumor/anticancer Camellia sinensis strain and a tea product produced from such strain. Also disclosed herein are a pharmaceutical composition and a supplement, each of which includes the tea product. The selective breeding method includes: conducting a hybridization process so as to obtain progenies of Camellia sinensis; subjecting the progenies of Camellia sinensis to determination of bioactive ingredient contents; and selecting, from the progenies of Camellia sinensis, an antitumor/anticancer Camellia sinensis strain which meets five standards of bioactive ingredients.