| 摘要 |
The invention provides a method for reducing warping in wood that comprises contacting with the cellulose fibers to be treated with a copolymer of silicone units having the general formula: (M<SUB>a</SUB>D<SUB>b</SUB>T<SUB>c</SUB>Q<SUB>d</SUB>)<SUB>x </SUB>where M is R<SUB>3</SUB>SiO<SUB>1/2</SUB>-; D is R<SUB>2</SUB>SiO-; T is RSiO<SUB>3/2</SUB>-; Q is Si(O<SUB>1/2</SUB>)<SUB>4</SUB>-; R is a generalized organic radical selected from: linear or branched hydrocarbon radicals of 1-8 carbons containing 0-1 degree of unsaturation, or phenyl, or trifluoropropyl radicals; a, b, c, d are real numbers and further provided the ratio of a/(c+d) is between 0 and 4; the ratio of b to the rest is not subject to limitation provided the final base viscosity is between 50-3500 cSt; and at least one R group of each molecule must be a hydrolysable group; and maintaining the contact for a time sufficient to establish a change in the chemical structure of a portion of the cellulose fiber that provides a decrease in the hydrophilic quality of the fiber decreasing the wetting of the surface by liquid water.
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