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. 27, 2007
Filed:
Feb. 20, 2004
Pierre Blanchard, Reyrieux, FR;
Detlef Gysau, Zofingen, CH;
Patrick Trouve, Clamart, FR;
Marion Loman-oonk, Legal Representative, Almelo, NL;
Pierre Blanchard, Reyrieux, FR;
Detlef Gysau, Zofingen, CH;
Patrick Trouve, Clamart, FR;
Marion Loman-Oonk, legal representative, Almelo, NL;
OMYA AG, Oftringen, CH;
Abstract
The invention relates to the selection of a natural calcium carbonate crushed to a high degree of fineness, possibly treated with one or more fatty acids or one or more of their salts or mixtures thereof, and its use as a rheology regulator for polymeric compositions. The specific surface area is 14 to 30 m/g measured according to the BET method to ISO 4652, and the oil absorption is greater than 16 measured according to ISO 787-V (Rub-out method). The conditions of mixing of the constituents and manufacture are improved, as well as the properties of the final product.