Erasable ball-point pen ink

Details Erasable ball-point pen ink Erasable ball-point pen ink

1985-05-29

1986-12-16

Morris, Theodore

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 20, 106 30, 106 31, C09D 500, C09D 1100

Patent

active

046297480

ABSTRACT:
An erasable ball-point pen ink is described comprising a rubber component, a volatile solvent, a pigment and a nonvolatile solvent, said ink further containing at least one dispersant that is liquid at room temperature and completely soluble in said volatile solvent and which is selected from the group consisting of alkyl phosphate esters, amines and oxyethyleneoxypropylene block copolymers, by which a ball-point pen is available that ensures a very smooth ink flow and letter writing during any season of the year without blocking of the small clearance between the writing ball and the ball holder even when the writing tip is uncapped and exposed to the atmosphere for a prolonged period. The ink is particularly adapted to be used with ball-point pens for writing fine letters.

REFERENCES:
patent: 3844994 (1974-10-01), Vijayendran
patent: 4097290 (1978-06-01), Muller et al.
patent: 4329262 (1982-05-01), Muller
patent: 4349639 (1982-09-01), Muller
patent: 4389499 (1983-06-01), Riesgraf
patent: 4390646 (1983-06-01), Ferguson
patent: 4391927 (1983-07-01), Farmer
patent: 4393103 (1983-07-01), Louden

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