Preparation of modified wood

Details Preparation of modified wood Preparation of modified wood

2005-05-03

2005-05-03

Feely, Michael J. (Department: 1712)

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

C428S447000, C428S452000, C428S537100

Reexamination Certificate

active

06887527

ABSTRACT:
Wood is modified by treating with an aqueous water repellent [I] and an emulsion water repellent [II]. The aqueous water repellent [I] comprises a product obtained through co-hydrolytic condensation of (A) an organosilicon compound: (R1)a(OR2)bSiO(4−a−b)/2and (B) an amino-containing alkoxysilane: R3R4NR5—SiR6n(OR2)3-n. The emulsion water repellent [II] is a trialkylsiloxysilicate emulsion water repellent obtained by polymerizing (C) an organodisiloxane: R73Si—O—SiR73and (D) a tetraalkoxysilane: Si(OR7)4in an aqueous solution containing (E) a surfactant and (F) water. Two stages of treatment with repellents [I] and [II] can impart water repellency, minimal water absorption and dimensional stability to wood.

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