公开(公告)号：US20210251222A1

公开(公告)日：2021-08-19

申请号：US17253318

申请日：2019-06-21

Applicant: UNIVERSIDAD DEL PAÍS VASCO / EUSKAL HERRIKO UNIBERTSITATEA

Inventor： Jalel LABIDI BOUCHRIKA ,  Darci Alberto GATTO ,  Patricia BIHALVA SOARES DOS SANTOS

IPC: A01N31/16 ,  C08L97/00 ,  B27K3/15 ,  B27K3/16 ,  B27K3/20 ,  B27K3/22 ,  B27K3/26 ,  B27K3/52

Abstract: A method for preparing a wood preservative composition, includes modifying lignin with Na2B4O7 or NaNO3 and then with a chromium (II) salt, copper (II), cadmium (II) or zinc (II), for example, metal nitrates (Cr(NO3)2, Cu(NO3)2, Cd(NO3)2, Zn(NO3)2); to the preservative obtainable by this method; and to a method for preserving wood; and to the preserved wood. The preservative prevents degradation by xylophagous and fungal agents, and also improves some properties of the wood, and the hygroscopicity and fire resistance.