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:
Feb. 14, 2012
Filed:
Feb. 19, 2009
Paul Roger Kust, Newark, DE (US);
Paul Roger Kust, Newark, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The disclosure provides a highly loaded pearlescent pigment acrylic polymer slurry concentrate for use as a pearlescent pigment additive for an acrylic polymer sheet, comprising: (a) about 35 to about 45 wt. % of a pearlescent pigment based on the weight of the slurry concentrate; (b) about 1.0 to about 5.0 wt. % of a copolymer dispersant comprising a pigment functional component derived from a monomer selected from the group consisting of urethane or urea, epoxy-containing methacrylate esterified with aromatic carboxylic acids, aliphatic carboxylic acids, ammonia and primary, secondary and tertiary aliphatic amines, primary aromatic amines, and alkyl methacrylate; and a solvent functional component derived from a monomer selected from the group consisting of methyl methacrylate, butyl methacrylate, ethyl hexyl methacrylate, lauryl methacrylate, 1,2-propane diol, 6, hydroxyhexanoic acid, and 2-phenoxyethanol; (c) about 15 to about 45 wt. % of a (C-C) alkyl ((C-C)alk) acrylate; and (d) about 0.1 to about 1.5 wt. % of a thixotropic agent.