Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-01-15
2008-01-15
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C252S183110
Reexamination Certificate
active
07319115
ABSTRACT:
A hardener composition and pine bark tannin-containing resin composition are disclosed. The resin composition is formulated to neutral pH in order to reduce the extent of self-polymerisation and provide a satisfactory shelf life. The hardener composition may be mixed with a suitable resin, or the resin composition mixed with a suitable hardener to produce a cold set adhesive which is particularly useful for bonding wood.
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patent: 5858553 (1999-01-01), Wu
patent: 5912317 (1999-06-01), Wu
Kreibich et al, Forest Prod Jour, vol. 37, No. 2, pp. 43-46, Feb. 1987, Condensed tannin-sulfonate derivatives in cold-setting . . . .
Gonzalez et al, Holz Als Roh- Und Werkstoff 54, 1996, pp. 389-392, Influence of preparation procedure on pine tannin . . . .
Laks et al, Jour of Wood Chem & Tech, 8(1), 1988, pp. 91-109, Condensed Tannins: Desulfonation of Hydroxybenzylsulfonic . . . .
Anderson Charles Ross
Grigsby Warren James
McIntosh Charles Duff
Suckling Ian Douglas
Warnes Jeremy Martin
Jacobson & Holman PLLC
New Zealand Forest Research Institute Limited
Szekely Peter
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