Process for preparing poly ( vinyl acetals ) and poly (vinyl ketals)
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 2, 1999
Grant Date -
N/A
app pub date -
May 2, 1997
filing date -
May 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Loading Importance Indicators... 
Abstract
A process for preparing poly(vinyl acetals) or poly(vinyl ketals) by reacting poly(vinyl alcohol) with an aldehyde or ketone in the presence of a catalyst which contains acid groups which are chemically bound on a sheet-like support which is insoluble in the reaction medium.
Loading the Abstract Image...
OK
First Claim
Family
Loading Family data...
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