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:
Dec. 13, 2016
Filed:
Jul. 17, 2012
Ekkehard Barth, Köln, DE;
Bastian Mahr, Bergisch Gladbach, DE;
Ekkehard Barth, Köln, DE;
Bastian Mahr, Bergisch Gladbach, DE;
JIANGSU SYNECOUN MEDICAL TECHNOLOGY CO., LTD, Taizhou, CN;
Abstract
In a process for producing a spinnable silica sol material, a viscosity value Vis stipulated which the spinnable silica sol material should have after ripening. A viscosity value Vcorresponding to Vwhich the silica sol material has before ripening is ascertained. An aqueous acid solution and a hydrolysable silicon compound are combined. The combined mixture is evaporated to give a single-phase solution while measuring the viscosity of the mixture and the evaporation process is terminated upon reaching the viscosity value V. The single-phase solution thus obtained is then ripened to give a silica sol material with the viscosity value V. The process exhibits reduced waste and more exact reproducibility of the spinning sol properties during the synthesis and an increased space-time yield in the production of biologically degradable and/or resorbable fibers and nonwoven fabrics.