Georgia-pacific Chemicals LLC

Derek L Atkinson

Cornel Hagiopol

John B Hines

Bobby Lee Williamson

Adam K Sniady

Robert A Breyer

Paul S Baxter

James H Knight

John D Cothran

Daniel C Yeager

Jessica D Jennings

Robert M Meacham

Herman D Watts, Jr

Modified polyphenol binder compositions and methods for making and using same are provided. In at least one specific embodiment, the binder composition can include at least one unsaturated monomer and at least one polyphenolic compound. The polyphenolic compound can include a lignin, a tannin, a novolac resin, a modified phenol formaldehyde resin, bis-phenol A, humic acid, or any mixture thereof.

Modified polyphenol binder compositions and methods for making and using same

Methods for making composite products are provided. In at least one specific embodiment, the method can include combining a plurality of lignocellulose substrates and one or more free radical precursors to produce a mixture of the lignocellulose substrates and the one or more free radical precursors. The method can also include maintaining the mixture at a temperature less than 60&#xb0; C. for at least 10 minutes while retaining at least 11 wt % of the one or more free radical precursors charged to the mixture. The method can then include heating the mixture comprising at least 11 wt % of the one or more free radical precursors charged to the mixture to a temperature of at least 60&#xb0; C. to about 300&#xb0; C. to produce a composite product. The composite product can have a density less than 1 g/cmand an internal bond strength of at least 0.35 MPa.

Methods for making lignocellulose containing composite products

Methods for making composite products are provided. In at least one specific embodiment, the method can include combining a plurality of lignocellulose substrates, a free radical precursor, and a polyphenolic material to produce a mixture. The polyphenolic material can be in a liquid form, a solid form, or both when combined to produce the mixture. The method can also include maintaining the mixture at a temperature of less than 60&#xb0; C. for at least 10 minutes while retaining at least 11 wt % of the free radical precursor charged to the mixture. The mixture can also include heating the mixture comprising at least 11 wt % of the free radical precursors charged to the mixture to a temperature of at least 60&#xb0; C. to about 300&#xb0; C. to produce a composite product.

The present invention relates to an aqueous phenol-formaldehyde resole resin prepared by reacting phenol and formaldehyde in the presence of a source of calcium ions, to a curable powdered (particulate) resole resin made by spray drying the aqueous phenol-formaldehyde resole resin, to a method of preparing a wood composite using the curable, powdered resin, and the related wood composite bonded with the curable, powdered resin.

Bonding wood composites with a calcium-modified phenol-formaldehyde resin

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Lawrenceville, GA, United States of America

Derek L Atkinson