Patent · US Active

Wood substitute material and its use

US8188175B2 · kind B2 · utility

5Cited by

0References

22Claims

0Family size

Assignee

J.S. STAEDTLER GMBH & CO. KG · DE

Inventors

Nikolas Lins · Röthenbach an der Pegnitz, DE
Sylvia Diestel · Düsseldorf, DE
Andreas Thies · Tirschenreuth, DE

Key dates

Filing date	Jul 11, 2009
Grant date	May 29, 2012
Priority date	—
Expiry date	Jul 11, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L51/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a wood substitute material for wood-encased pencils, comprising the following ingredients: 15-3.0% by weight of at least one polymeric binder, 50-80% by weight of at least one organic filler, 0-20% by weight of at least one inorganic filler, 0.5-5% by weight of at least one adhesion promoter, 1-30% by weight of at least one wax, 0-10% by weight of at least one color pigment, and 0-10% by weight of at least one additive, the at least one adhesion promoter forming a chemical bond between the at least one polymeric binder and the at least one organic filler, a ratio of the at least one adhesion promoter and the at least one wax in the range from 1:2 to 1:6 being formed, and the sum of organic and inorganic filler being not more than 80% by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.