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:
Jan. 25, 2000
Filed:
Aug. 10, 1998
Donald Kendall Drummond, Quakertown, PA (US);
Joseph Anthony Radosta, Easton, PA (US);
Donald Richard Deutsch, Walnutport, PA (US);
Minerals Technologies Inc., Bethlehem, PA (US);
Abstract
This invention concerns a mixture of a first component selected from talcs and one or more second component(s) selected from diatomaceous earth, natural and synthetic silica, clay, ceramic spheres, volcanic ash and glass cullet wherein the ratio of the component to the second component(s) provides an enhanced abrasiveness property, an enhanced die pressure character, and a reduced melt fracture character. The invention further relates to an antiblock agent made from such mixture that significantly reduces or eliminates the need to provide polymer processing additives. This invention also relates to a masterbatch composition having an admixture such that enhanced die pressure character and/or reduced melt fracture character are obtained.