Polymeric pigments used in paper coating compositions and a process for their preparation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 16, 1990
Issued Date -
N/A
app pub date -
Feb 24, 1989
filing date -
Jun 11, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polymeric or plastic pigment, useful as a partial replacement for the inorganic pigment conventionally employed in paper coating compositions is disclosed. The pigment comprises a copolymer of an animal or vegetable protein and a monomer havingh a glass transition temperature (Tg) greater than about 70.degree. C. polymerized in a surfactant free system. When employed in paper coating compositions the pigment provides a coating of improved gloss and ink holdout, as compared to a coating in which the pigment composition consists only of an inorganic material. Improved water resistance, improved water holding and a potential for reduction in the coating sticking to the calender during the paper finishing process are obtained as compared to conventional polymeric pigments.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully