Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Reexamination Certificate
2006-06-20
2006-06-20
Yoon, Tae H. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C524S590000, C524S594000, C524S597000, C527S401000, C527S403000
Reexamination Certificate
active
07064175
ABSTRACT:
The adhesive system for use in binding lignocellulosic materials into a composite product, the adhesive system consisting essentially of a first part and one of (a) a second part; (b) a third part, and (c) both the second part and the third part; the first part being selected from the group consisting of powdered tannins, powdered modified tannins, and mixtures thereof; the second part being a powdered component reactive with the first part and selected from the group consisting of aldehyde polymers, phenolic resoles, modified phenolic resoles, and mixtures thereof; the third part being a liquid polymeric isocyanate, wherein:when the system consists essentially of the first part and (a) the second part, the weight ratio of the first part to the second part is from about 1:99 to about 65:35;when the system consists essentially of the first part and (b) the third part, the weight ratio of the first part to the third part is from about 1:99 to about 65:35; andwhen the system consists essentially of the first part and (c) both the second part and the third part, the first part is present in an amount from about 1% w/w to about 64% w/w, the second part is present in an amount of from about 1% w/w to about 64% w/w and the third part is present in an amount of from about 35% w/w to about 99% w/w. A method of forming a composite product using the adhesive system and a composite product made with the adhesive system are also provided.
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Abstract of Bulgarian Design Patent BG383Y to Josifov et al, published Apr. 28, 2000.
Clark & Brody
Mitanic, Inc.
Yoon Tae H.
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