Robert Prottas resumes & CV records
Resumes
Research Chemist At Dupont
Location:
Greater Philadelphia Area
Industry:
Chemicals
Robert D Prottas, Age 6724 Elmsted Rd, Bridgeport, CT 06611
Robert Prottas Phones & Addresses
24 Elmsted Rd, Trumbull, CT 06611 (203) 261-2449
2601 Skylark Rd, Wilmington, DE 19808 (302) 998-3325 (302) 998-3465 (302) 998-6515
Newark, DE
Stafford, VA
Winchester, VA
Front Royal, VA
Philadelphia, PA
2601 Skylark Rd, Wilmington, DE 19808 (302) 745-5716
Social networks
Robert D Prottas
Linkedin
Work
Position:
Sales/Service
Education
Degree:
Associate degree or higher
Industries
Chemicals
Mentions for Robert D Prottas
Publications & IP owners
Us Patents
Waterborne Acrylourethane Pigment Dispersant Polymer
US Patent:
5051464, Sep 24, 1991
Filed:
Sep 1, 1989
Appl. No.:
7/401870
Inventors:
Jeffery W. Johnson - Wilmington DE
Robert D. Prottas - Wilmington DE
Clifford H. Strolle - Springfield PA
Robert D. Prottas - Wilmington DE
Clifford H. Strolle - Springfield PA
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
C08J 0000
C08F 800
C08F 800
US Classification:
524555
Abstract:
An improved waterbased coating composition containing about 10-50% by weight of film forming binder and pigment in a pigment to binder weight ratio of about 1/100 to 200/100 dispersed in an aqueous carrier and having a pH of about 7-10; wherein the improvement used in the composition is a acrylourethane pigment dispersing polymer in an amount of about 0. 5-10% by weight, based on the weight of the coating composition; the acrylourethane pigment dispersing polymer is composed of hydroxyl and carboxyl functional acrylic polyol having a hydroxyl no. of about 50-170 and an acid no. of about 30-120 and chain extended with an aliphatic, cycloaliphatic or aromatic diisocyanate in the presence of a monohydric alcohol and the polymer has a weight average molecular weight of about 10,000-40,000 and the carboxyl groups are neutralized with ammonia or an amine.
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