Flexible marking composition for pencils

Details Flexible marking composition for pencils Flexible marking composition for pencils

1980-06-16

1981-11-03

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106 19, 260 233, 260 237M, C09D 1300

Patent

active

042985072

ABSTRACT:
A flexible marking composition for a pencil. The composition comprises an elastomer, one or more plasticizers, a selected pigment, and a pigment carrier mixed together in specified proportion and vulcanized with a vulcanizing agent.

REFERENCES:
patent: 2380126 (1945-07-01), Sturm
patent: 4017451 (1977-04-01), Ishida et al.

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