公开(公告)号：DE2352052A1

公开(公告)日：1975-04-24

申请号：DE2352052

申请日：1973-10-17

Applicant: BASF AG

Inventor： SIEGLER MANFRED ,  FROEDE OTTO DIPL-HOLZW DR

IPC: B27K3/50 ,  B27K3/52 ,  C08L61/06 ,  C08L91/08 ,  C08L97/02

Abstract: Incorporation of wood protectants into materials produced by bonding wood particles and containing water repellents by blending the wood protectants with the water repellents.

公开(公告)号：DE2336979A1

公开(公告)日：1975-02-06

申请号：DE2336979

申请日：1973-07-20

Applicant: BASF AG

Inventor： KIPPENBERGER WUNIBALD ,  FROEDE OTTO DIPL-HOLZW DR

IPC: B27N9/00 ,  C08L97/02 ,  B29J5/00

Abstract: Difficulty flammable wood prods. are made by treating a mixt. of wood chips and flame-retardant with a part of the binder, drying the composite, adding the rest of the binder and curing. As most flame-resisting additives are acidic in nature, storability. viscosity and/or concn. problems arising when the normal prodn. processes are followed are obviated by using the present sequence. The optimum degree of re-wetting of the dried chips prior to moulding can be effected. Conventional (aminoplast) binders may be used. These may contain 10-15 wt% of the flame-resisting additive (e.g. H3BO3, (NH4)3PO4, NH4BR, urea or melamine and, esp. mixts. thereof with, e.g. kaolin). Impregnation of the chips with the dil. resin compsn. is continued till the desired uptake of additive has been reached (e.g. 10%, based on dry chips wt.) after which the chips are dried to, e.g. 2-5% before addn., when reqd. of the remainder of the binder.