Patent ID: 8409403
Filing Date: 2013-04-02
Classification: C07G,C08G,C08H,C08L

Abstract:
1. A method for delignification of lignocellulose and reacting delignification compounds with a chemically active organic compound by the method comprising the steps of: A) adding 50 to 100 parts by weight of lignocellulose particles; B) adding 10 to 100 parts by weight of an amino compound selected from the group consisting of urea, guanidine, aminoguanidine, guanidine carbonate and urea mixed with other amino compounds and mixture thereof; C) adding water to the lignocellulose particles and the amino compounds thus forming a mixture; then heating the mixture at ambient or elevated pressure, at ambient or up to 150 degrees C. for 0.5 to 24 hours thereby producing delignification compounds comprising amino lignin, amino lignin cellulose, amino cellulose, lignocellulose, lignin, carbohydrates, hemicellulose, resins, rosins and alcohols; D) adding 25 to 100 parts by weight of chemically active organic compound to one or a mixture of the delignification compounds produced in step C then reacting the delignification compounds by mixing the delignification compounds of step C with the chemically active organic compound at ambient or elevated pressure and at ambient temperature up to the boiling point of the chemically active organic compound for 1 to 4 hours; wherein the chemically active organic compound is selected from the group consisting of propylene oxide, polyepoxy compounds, epichlorhydrin, and mixtures thereof; thereby producing adhesives and resins.