Aqueous marking pen ink for writing boards

Details Aqueous marking pen ink for writing boards Aqueous marking pen ink for writing boards

1989-06-09

1990-06-19

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524308, 524292, 524317, 523160, C08K 510

Patent

active

049354612

ABSTRACT:
An aqueous marking pen ink for writing boards comprising an aqueous vehicle containing a resin, an ester compound and a pigment dispersed in said aqueous vehicle, said resin being selected from the group consisting of the specific polymers and said ester compound being selected from the group consisting of the specific compounds. The marking pen produces writings or markings which are easily erased with dry erasers.

REFERENCES:
patent: 4097289 (1978-06-01), Hofmann et al.
patent: 4163675 (1979-08-01), Hirano et al.
patent: 4297260 (1981-10-01), Feree, Jr. et al.
patent: 4525216 (1985-06-01), Nakanishi
patent: 4740549 (1988-04-01), Okuzomo et al.

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