The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Mar. 18, 2005
Ueli Sulser, Unterengstringen, CH;
Irene Schober, Zürich, CH;
Ulf Velten, Oberengstringen, CH;
Anna Krapf, Uitikon Waldegg, CH;
Ueli Sulser, Unterengstringen, CH;
Irene Schober, Zürich, CH;
Ulf Velten, Oberengstringen, CH;
Anna Krapf, Uitikon Waldegg, CH;
Sika Technology AG, Baar, CH;
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.