Michael J Otley
Real Estate Commission in Hockessin, DE
License number
Delaware R3-0012312
Issued Date
May 11, 1993
Expiration Date
Apr 30, 2012
Category
Real Estate
Type
Resident Salesperson
Address
Address
2
Hockessin, DE 19707
Professional information
Method Of Preparing Encapsulated Pigment Dispersions Which Include Polyurethane Dispersions
US Patent:
2014001, Jan 9, 2014
Filed:
Dec 15, 2011
Appl. No.:
14/005958
Inventors:
Waifong Liew Anton - Wilmington DE, US
Hee Hyun Lee - Wilmington DE, US
Michael Joseph Otley - Hockessin DE, US
Michael Stephen Wolfe - Wilmington DE, US
Hee Hyun Lee - Wilmington DE, US
Michael Joseph Otley - Hockessin DE, US
Michael Stephen Wolfe - Wilmington DE, US
Assignee:
E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
C09D 11/00
US Classification:
524501, 524505
Abstract:
A process for encapsulating pigment dispersions is provided where a pigment is dispersed with a polymeric dispersant in an aqueous solvent system. An acrylate monomer and a polyurethane dispersion are added and the resultant mixture is polymerized. Optionally, the acrylate monomer/polyurethane mixture may be emulsified in water with an added surfactant or polymeric dispersant and up to 20% acrylic or other vinyl monomers based on the acrylate may be added to the acrylate monomer/polyurethane mixture before polymerization. Such encapsulated pigment dispersions may be used in inkjet inks and are stable to heat, aging test conditions, and solvent challenges. Prints from these inks have better durability.
Method Of Preparing Pigment Dispersions
US Patent:
2013021, Aug 15, 2013
Filed:
Dec 15, 2011
Appl. No.:
13/882288
Inventors:
Michael Joseph Otley - Hockessin DE, US
Michael Stephen Wolfe - Wilmington DE, US
Michael Stephen Wolfe - Wilmington DE, US
Assignee:
E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE
International Classification:
C08L 33/08
US Classification:
524558, 524561, 524591
Abstract:
A process for preparing pigment dispersions is provided in which an organic solvent is used during the milling process in the preparation of pigment dispersions containing a water-soluble polymer as a dispersant.