Continuous process for making solid, free-flowing water dispersible PVA-aldehyde reaction product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 18, 1984
Issued Date -
N/A
app pub date -
Nov 21, 1983
filing date -
Sep 27, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polyvinyl alcohol-aldehyde reaction product is produced continuously in a rotating contactor by contacting solid particles of the polyvinyl alcohol with the aldehyde in an acidic aqueous salt solution. The product can be dried and then sieved to remove oversize particles. A preferred aldehyde is either formaldehyde or glutaraldehyde which reacts with the polyvinyl alcohol to produce a reaction product that can be used as a fluid loss control agent in oil fields.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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