| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to woodworking, particularly, to wood dyeing and modification. Birchwood is refined by treatment by water solutions of chemicals. At first step, birchwood is impregnated with water solution of p-phenylenediamine or o- phenylenediamine. At second step, it is impregnated with solution of copper or iron sulfate combined with carbamide solution at 18-22°C.EFFECT: better decorative properties, longer life.3 ex |
