Patent application number | Description | Published |
20100093895 | Process for producing polymers having amide and ester groups in the solid state - 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. | 04-15-2010 |
20100137476 | DISPERSANT FOR PLASTER COMPOSITIONS - The present invention relates to the use of a polymer P as a dispersant, particularly as a liquefier, for plaster compositions as well as plaster compositions comprising the polymer P. The polymer P comprises at least one acid unit, at least one ester unit, and at least one amide unit, and the ratio of the acid units to the ester and amide units is between 2 and 6. | 06-03-2010 |
20100197840 | EMULSIFYING POLYMERS AND THEIR USE - 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. | 08-05-2010 |
20100305238 | DISPERSANTS FOR HYDRAULICALLY SETTING SYSTEMS - The present invention relates to polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems comprising the polymer P. The polymer P comprises at least one acid unit, at least one ester unit, at least one unit containing a tetrahydrofurfuryl group, and optionally at least one amide unit. | 12-02-2010 |
20110160349 | WATER-REDUCED HYDRAULICALLY SETTING COMPOSITIONS WITH TEMPORALLY EXTENDED FLOW CAPABILITY - A polymer P for prolonging the flowability of water-reduced aqueous hydraulically setting compositions, and a method for prolonging the flowability of water-reduced aqueous hydraulically setting compositions. | 06-30-2011 |
20110160351 | DISPERSING AGENTS FOR GYPSUM PLASTER COMPOSITIONS - A polymer P as a dispersant for gypsum compositions, as well as gypsum compositions including the polymer P. The polymer P includes at least one acid unit and at least one long side chain with a molecular weight of at least 1800 g/mol, including polyoxyalkylene groups, and has an acid content of 1.5 to 4 acid groups per gram of polymer. | 06-30-2011 |
20110178208 | DISPERSANT FOR HYDRAULICALLY SETTING SYSTEMS - Polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems including the polymer P. The polymer P includes at least one acid unit, at least one ester unit, and at least one unit containing terephthalate or naphthalate. | 07-21-2011 |
20110213054 | METHOD FOR STABILIZING POLYCARBOXYLATES - This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant. | 09-01-2011 |
20110245379 | POLYMER COMPRISING AMIDE AND ESTER GROUPS, METHOD FOR PRODUCTION AND USE THEREOF - 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. | 10-06-2011 |
20130030087 | ADDITIVE FOR HYDRAULICALLY SETTING SYSTEMS WITH IMPROVED PROCESSING - A comb polymer and use thereof for improving the processing of hydraulically setting compositions. The comb polymer has ester, amide and/or ether groups on side chains bound to a main chain and the main chain has at least one acrylic acid unit A or a salt thereof and at least one methacrylic acid unit M or a salt thereof. Processes for producing a hydraulically setting composition with longer processing time. | 01-31-2013 |
20130109819 | REGULATOR MOLECULE | 05-02-2013 |
20130112116 | ACCELERATOR FOR HYDRAULIC BINDERS - The invention relates to additives for hydraulic binders and systems produced from them, such as concrete and mortar. In particular, the present invention relates to a setting and hardening accelerator for hydraulic binders produced by means of reaction of a calcium compound CV with a silicon compound SV and addition of a phosphonic acid derivative, as well as its production. | 05-09-2013 |
20130217808 | PRODUCTION OF COMB POLYMERS BY MEANS OF ESTERIFICATION - The invention relates to a method for producing comb polymers, wherein at least one polycarboxylic acid or a salt thereof is esterified with at least one monohydroxy polyether, comprising the following steps: (a) preparing a reaction mixture containing at least one polycarboxylic acid; (b) heating the reaction mixture to at least 80° C.; (c) adding a base; and (d) esterifying the mixture at a reaction temperature of at least 80° C. obtaining a comb polymer, wherein at least one monohydroxy polyether is added to the reaction mixture in step (a) and/or (b). The invention further relates to comb polymers, cement compositions, molded bodies, and uses of comb polymers. | 08-22-2013 |
20130253097 | POLYMER MADE FROM MALEIC ACID, ALLYL ETHER, AND VINYL ACETATE AND THE PREPARATION AND USE OF SAID POLYMER - The invention relates to comb polymers made from maleic acid or derivatives thereof, allyl ethers, and vinyl acetate, and the preparation thereof by free-radical polymerization at a reaction temperature of 10° C. to 50° C. The invention relates further to the use of such comb polymers to improve the workability of hydraulically setting compositions. | 09-26-2013 |
20140051801 | POLYMER OF MALEIC ACID, ALLYL ETHER AND (METH)ACRYLIC ACID COMPOUNDS, AND PREPARATION AND USE THEREOF - The invention relates to comb polymers of maleic acid or derivatives thereof, allyl ethers and (meth)acrylic acid or derivatives thereof, and to the preparation thereof by free radical polymerization at a reaction temperature of 10° C. to 50° C. The invention further relates to the use of such comb polymers for improving the processability of hydraulically setting compositions. | 02-20-2014 |
20140080943 | COMB POLYMERS AS DISPERSANTS FOR ALKALINE ACTIVATED BINDERS - A comb polymer that is a dispersant in a binder composition includes an alkaline activating agent, wherein the activating agent is intended for activation of a latently hydraulic and/or puzzolanic binder, and wherein the comb polymer has a polymer backbone formed from a plurality of backbone monomers and a plurality of polymeric side chains each formed from a plurality of side chain monomers and bonded thereto, and wherein at least some of the backbone monomers have one or more ionizable groups, and features a structure constant K of the comb polymer, defined as K=[(N−1)z] | 03-20-2014 |
20140163161 | COMB POLYMERS WITH DELAYED ALKALINE HYDROLYSIS - Comb polymers having carboxyl/carboxylate and ester groups, containing a) 0.1-0.9 mol fractions of a partial structural unit S1, which is derived from an acrylic/methacrylic or maleic acid unit, b) 0-0.4 mol fractions of a partial structural unit S2, which is derived, for example, from an acrylic/methacrylic or maleic acid unit, which is esterified by means of a C | 06-12-2014 |
20140249254 | DISPERSING AGENT FOR SOLID SUSPENSIONS - A polymer having the formula (XIV) | 09-04-2014 |