US Patent 7531244 Plywood, and a process for preparing plywood

Patent 7531244 was granted and assigned to DSM (company) on May, 2009 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

DSM

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75312440

Date of Patent

May 12, 2009

Patent Application Number

105821330

Date Filed

December 9, 2004

Patent Primary Examiner

‌

Leszek Kiliman

Patent abstract

The invention relates to plywood, comprising at least two wood veneer layers and at least one adhesive layer, whereby the adhesive layer comprises a resin composition comprising a triazine compound (T), formaldehyde (F) and optionally urea, wherein the molar F/(NH2)2 ratio of the adhesive layer lies between 0.70 and 1.10 and the molar F/T ratio of the adhesive layer lies between 1.0 and 3.5. The invention further relates to a process for the preparation of plywood.

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