Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent
Reexamination Certificate
2006-02-21
2006-02-21
Green, Anthony J. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Contains fireproofing or biocidal agent
C424S078090, C424S405000, C424S618000, C424S630000, C424S632000, C424S633000, C424S634000, C424S637000, C424S638000, C424S641000, C424S646000, C424S650000, C424S652000, C424S654000, C424S655000, C424S682000, C427S297000, C427S393000, C524S434000
Reexamination Certificate
active
07001452
ABSTRACT:
The present invention relates to a method and a wood preserving composition which is free of poly-aspartic acid and its derivatives and comprises mixtures of a metal compound, complexing agents selected from ethanolamines, polyethylenimine, ammonia or a mixture of these compounds, and a vinyl based polymer selected from poly(vinyl alcohol) (PVA), poly(acrylamide) (PA), poly(N-vinyl pyrrolidone) (PVP) and poly(N-isopropyl acrylamide) (PNIPAM). The resulting metal amine solution can then be used to formulate a variety of metal-based cellulosic material preserving products.
REFERENCES:
patent: 5874025 (1999-02-01), Heuer et al.
patent: 6843837 (2005-01-01), Zhang et al.
Griffin Paul
Leach Robert M.
Zhang Jun
Green Anthony J.
Hodgson & Russ LLP
Osmose Inc.
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