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:
Sep. 22, 2015
Filed:
Dec. 19, 2011
John Goulbourn, Liverpool, GB;
Andrew Stuart Overend, Bolton, GB;
Christine Leeming, Manchester, GB;
James Leeming, Manchester, GB;
John Goulbourn, Liverpool, GB;
Andrew Stuart Overend, Bolton, GB;
Christine Leeming, Manchester, GB;
COLORMATRIX HOLDINGS, INC., Wilmington, DE (US);
Abstract
A method of introducing an additive, for example a dye, into a polymeric material comprises using a liquid formulation comprising the additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material. The active compound may be a multi-functional anhydride. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus and suitably a cavity transfer mixer is used in the process. A fiber is suitably subsequently produced.