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US 9,540,513 B2Granted
Lignocellulosic article and method of producing same
AssigneeBASF SE
InventorsMohamed Bouguettaya, Volker Schaedler, Renee Tarasiewicz
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Abstract
A lignocellulosic article comprises a plurality of lignocellulosic pieces and a binding agent disposed on the plurality of lignocellulosic pieces. The binding agent is formed from a high temperature polymerization (HTP) polyol and an isocyanate component. A method of producing the lignocellulosic article is also disclosed.
Claims20
A method of producing a lignocellulosic article, said method comprising the steps of:
- providing a plurality of lignocellulosic pieces;
- providing a high temperature polymerization (HTP) polyol having an ultimate glass transition temperature of from −44° C. to −5° C.;
- providing an isocyanate component;
- mixing the HTP polyol and the isocyanate component to form a binding agent;
- applying the binding agent to the plurality of lignocellulosic pieces;
- and
- applying pressure to the plurality of lignocellulosic pieces and the binding agent for a period of time, thereby producing the lignocellulosic article;
- wherein the HTP polyol has the following chemical structure (1)
- wherein X is independently selected from a substituted or unsubstituted C1-C30 hydrocarbyl group;
- and n is an integer greater than 1,
- wherein the step of mixing the HTP polyol and the isocyanate component comprises mixing the isocyanate component in an amount of from about 85 to less than 100 parts by weight based on 100 parts by weight of the components utilized to form the binding agent prior to reaction.
8 more elements
A lignocellulosic article comprising:
- a plurality of lignocellulosic pieces;
- and
- a binding agent disposed on and binding said plurality of lignocellulosic pieces;
- wherein said binding agent comprises the reaction product of a high temperature polymerization (HTP) polyol and an isocyanate component, wherein said binding agent comprises said isocyanate component in an amount of from about 85 to less than 100 parts by weight based on 100 parts by weight of the components utilized to form said binding agent prior to reaction;
- wherein said HTP polyol has an ultimate glass transition temperature of from −44° C. to −5° C. and is according to the following chemical structure (1)
- wherein X is independently selected from a substituted or unsubstituted C1-C30 hydrocarbyl group;
- and n is an integer greater than 1.
4 more elements
Dependencies are inferred from the claim text.