RECOMBINED WOODEN BOARD USING POLYIMIDE-MODIFIED POLYURETHANE ADHESIVE AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2017/177578

A1

A recombined wooden board using a polyimide-modified polyurethane adhesive and a preparation method therefor, relating to the technical field of wooden floor production. Fiber strips are bonded by means of an adhesive and pressed into a recombined wooden core board. A paint layer is provided on the surface of the recombined wooden core board, and side tenons and side grooves are provided on side surfaces of the recombined wooden core board. The adhesive is prepared from the following raw materials in parts by weight: 5-20 parts of polyisocyanate, 1-10 parts of polyanhydride, 30-50 parts of polyalcohol, 20-50 parts of a plasticizer, 0.02-0.20 part of a catalyst, 0.5-3 parts of a defoaming agent, 0.02-0.20 part of a dewatering agent, 0.02-0.5 part of a coupling agent, and 0.02-0.20 part of an antioxidant. By using the recombined wooded board, a waste of wood can be effectively reduced, wood resources are saved, and excellent economic benefits are achieved. In addition, by using the adhesive, the mechanical properties and high temperature resistance of wooden floors can be effectively improved.

SUN LONGXIANG (CN)
ZHANG ENJIU (CN)
QIAN XINMIN (CN)
WANG YANWEI (CN)

PCT/CN2016/092776

October 19, 2017

August 02, 2016

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JIUSHENG WOOD CO LTD (CN)

C09J175/08; B27N3/00; B27N3/08; C08G18/12; C08G18/48; C08G18/64; C08G18/73; C08G18/76; C08G73/10

CN105670551A	2016-06-15
CN105860912A	2016-08-17
CN105838312A	2016-08-10
CN104031241A	2014-09-10
CN1453323A	2003-11-05
US4654409A	1987-03-31

HANGZHOU XINYUAN PATENT AGENCY (CN)

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