Abstract: The present invention relates to emulsifying polymers, in particular to the use of these polymers for the stable emulsification of hydrophobic additives in aqueous concrete plasticizers.

Abstract: A polymer (P) is disclosed which includes amide and ester groups. The polymer can be produced by a process whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed. In a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. Polymers produced by the above method can be included in hydraulic-setting compositions before and after hardening by an addition of water.

Abstract: A process for preparing a polymer P having amide and ester groups in the solid state of aggregation, comprising (a) reacting a homo- or copolymer P1 of (meth)acrylic acid, itaconic acid or crotonic acid with at least one monohydroxy compound E at a temperature up to 200° C. to give a polymer P2, so that anhydride groups form in addition to ester groups, (b) cooling the polymer P2 prepared in step (a) being cooled to below 60° C. so that the polymer P2 is present in the solid state of aggregation or as supercooled melt, and (c) amidating the polymer P2 having anhydride groups and present in the solid state of aggregation or as supercooled melt with at least one amine compound A at temperatures below 60° C., the amine compound A used in step (c) being present in the solid state of aggregation or on or in a solid carrier material.

Abstract: The invention relates to a method for the production of a polymer (P) comprising amide and ester groups, whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed and, in a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. The invention further relates to polymers produced by the above method, the use thereof in hydraulic-setting compositions and said hydraulic-setting compositions before and after hardening by addition of water.

Abstract: The present invention relates to emulsifying polymers, in particular to the use of these polymers for the stable emulsification of hydrophobic additives in aqueous concrete plasticizers.

Abstract: The present invention relates to a process for the preparation of a polymer P having amide and ester groups in the solid state of aggregation, in a first step (a) a homo- or copolymer P1 of (meth)acrylic acid, itaconic acid or crotonic acid being reacted with at least one monohydroxy compound E at a temperature up to 200° C. to give a polymer P2, so that anhydride groups form in addition to ester groups, in a second step (b) the polymer P2 prepared in step (a) being cooled to below 60° C. so that the polymer P2 is present in the solid state of aggregation or as supercooled melt, and in a third step (c) the polymer P2 having anhydride groups and present in the solid state of aggregation or as supercooled melt being amidated with at least one amine compound A at temperatures below 60° C., the amine compound A used in the third step (c) being present in the solid state of aggregation or on or in a solid carrier material.

Abstract: The invention relates to a method for the production of a polymer (P) comprising amide and ester groups, whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed and, in a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. The invention further relates to polymers produced by the above method, the use thereof in hydraulic-setting compositions and said hydraulic-setting compositions before and after hardening by addition of water.