Method for the treatment of wood with metal-lignin salts
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 21, 1993
Grant Date -
N/A
app pub date -
Jan 24, 1992
filing date -
Jan 24, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for treatment of wood, whereby the wood is impregnated with a wood preservative composition consisting essentially of an aqueous solution of ammonium salt of lignin and ammonia complexes of certain metal cations such as Cu(NH.sub.3).sub.4.sup.++, Zn(NH.sub.3).sub.4.sup.++, and Hg(NH.sub.3).sub.2.sup.++. the lignin is selected from the group consisting of alkali lignin, organosolv lignin, partially desulfonated sulfite lignin, and modified alkali or organosolv lignin.
First Claim
Family
International Classification(s)
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