WOOD SUBSTITUTE MATERIAL AND USE THEREOF Russian patent published in 2013 - IPC C08L23/06 C08L23/12 B43K19/14 B43K19/16 

FIELD: chemistry.

SUBSTANCE: invention relates to a wood substitute material for wood-encased pencils. The wood substitute material for wood-encased pencils contains the following, wt %: 15-30% of at least one polymeric binder from a group of polyolefins, 50-80% of at least one organic filler from wood and/or cellulose with maximum particle size of 100 mcm and 0-20% by weight of at least one inorganic filler, 0.5-5% of at least one adhesion promoter, 1-30% of at least one wax, 0-10% of at least one colouring pigment and 0-10% of at least one additive. Total amount of the organic and inorganic filler is at most 80 wt %. The adhesion promoter is formed from polyethylene or polypropylene with grafted maleic anhydride, or from a copolymer of ethylene and maleic anhydride and forms a chemical bond between the polymeric binder and the organic filler. The ratio of the adhesion promoter to the wax ranges from 1:2.5 to 1:6.

EFFECT: wood substitute material for wood-encased pencils has high bending strength, wear resistance and is easy to sharpen.

16 cl, 3 dwg, 2 ex