Solid writing material

Details Solid writing material Solid writing material

1974-05-24

1976-05-18

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Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

35 9G, 106 21, 106 25, 106 28, 106 32, 106 27, 427150, C09D 1106, C09D 1112, C09D 1300

Patent

active

039574954

ABSTRACT:
A writing material in solid form containing a solid vehicle in which is dispersed a non-volatile oily solvent containing electron a substantially colorless donative chromogenic compound which develops color upon contact with an electron accepting substance, more than 50 % by weight of the solid vehicle being an ester of a higher (hydroxy) fatty acid or a mixture comprising an ester of a higher (hydroxy) fatty acid and a microcrystalline wax, and the non-volatile oily solvent being contained in the writing material in a range of from 10 to 50 % by weight of the entire writing material.

REFERENCES:
patent: 2748024 (1956-05-01), Klimkowski et al.
patent: 2755420 (1953-07-01), Locke
patent: 3079253 (1963-02-01), Greig
patent: 3484264 (1969-12-01), Strauss et al.
patent: 3672842 (1972-06-01), Florin
patent: 3769045 (1973-11-01), Maierson et al.
"Castor Wax and Other Hydroxy Waxes" Technical Bulletin No. 88, pp. 8, 9 and 28, The Baker Castor Oil Company, Bayonne, New Jersey, 1966.

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