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:
Nov. 10, 2015
Filed:
Feb. 14, 2012
Tina Schröder-grimonpont, Rheinzabern, DE;
Hans Willax, Maxdorf, DE;
Britta Katz, Dannstadt-Schauernheim, DE;
Jutta Brust, Kallstadt, DE;
Stephan Altmann, Ruppertsberg, DE;
Marco Schmidt, Speyer, DE;
Tina Schröder-Grimonpont, Rheinzabern, DE;
Hans Willax, Maxdorf, DE;
Britta Katz, Dannstadt-Schauernheim, DE;
Jutta Brust, Kallstadt, DE;
Stephan Altmann, Ruppertsberg, DE;
Marco Schmidt, Speyer, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Microcapsules of the present invention have a core and a wall. The wall is made of a polymer, which by weight is from 40 to 90% C-C-alkyl ester of acrylic acid, methacrylic acid, or both ('first monomer'); from 10 to 60% an ethylenically unsaturated crosslinker; and from 0 to 30% an ethylenically monounsaturated monomer different from the first monomer. At least 80% of the crosslinker is has three or more ethylenically unsaturated radicals. The core is made of a paraffin composition, which by weight has from 35 to 98% n-octadecane; from 1 to 10% C-C-aliphatic, diisopropylnaphthalene, or both; from 1 to 5% wax with a melting point >40° C.; and from 0 to 50% n-hexadecane. The present invention also relates to a process for preparing the microcapsules and to their use in binding construction materials, textiles, and heat transfer liquids.