Chemically modified wood and non-wood products and methods for the production thereof
AssigneesLing Ling Zhang, Branko Hermescec
InventorBranko Hermescec
Life of this patent
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Abstract
Provided is a process for chemically modifying wood or non-wood comprising: (a) impregnating said wood or non-wood with an aqueous composition comprising an acid polymerization catalyst; (b) impregnating the wood or non-wood product from step (a) with 3-furfuryl borate (‘3-FB’); and (c) subjecting the wood product from (b) for a time and under conditions to affect polymerization of the 3-FB. Modified wood and non-wood products are also provided.
Claims22
A process for chemically modifying wood or non-wood comprising:
- (a) impregnating said wood or non-wood with an aqueous composition comprising an acid polymerisation catalyst;
- (b) impregnating the wood or non-wood product from step (a) with 3-furfuryl borate (‘3-FB’);
- and
- (c) subjecting the wood product from (b) for a time and under conditions to affect polymerisation of the 3-FB,
- wherein the wood or non-wood consists of the group softwood, bamboo or Kraft paper.
A chemically modified wood product derived from softwood which has been produced by the polymerisation of 3-furfuryl borate within said softwood.
A chemically modified non-wood product derived from Kraft paper which has been produced by the polymerisation of 3-furfuryl borate within said Kraft paper, wherein the wood or non-wood consists of the group softwood, bamboo or Kraft paper.
A chemically modified wood or non-wood product which has been impregnated with 3-furfuryl borate, wherein the wood or non-wood consists of the group softwood, bamboo or Kraft paper.
A method of preparing 3-furfuryl borate (‘3-FB’) comprising the steps of:
- (i) reacting furfuryl alcohol (‘2-FM’) or 3-furfuryl methanol (‘3-FM’) with boric acid;
- and
- (ii) removing water produced during the reaction of (i).
A process for chemically modifying Kraft paper comprising:
- (i) drying the Kraft paper to reduce its moisture content;
- (ii) impregnating said Kraft paper with an aqueous composition comprising an acid polymerisation catalyst;
- (iii) impregnating the Kraft paper product from step (ii) with 3-FB;
- and
- (iv) subjecting the Kraft paper product from (iii) for a time and under conditions to affect polymerisation of the 3-FB.
Dependencies are inferred from the claim text.