C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/1116, 6/30,
C09D 11/18 (2006.01) C09D 3/36 (1980.01) C09D 3/733 (1980.01)
Patent
CA 1183983
ABSTRACT OF THE DISCLOSURE An initially erasable ink composition for a ball point writing instrument which ink is characterized by its initial erasability by ordinary pencil erasers when applied by a ball point writing instrument to an absorbent paper-like writing surface and which thereafter develops permanence. The ink composition comprises an elastomer selected from the group consisting of natural rubbers, synthetic rubbers and mixtures thereof, pigment, and a solvent system for said elastomer and pigment. The elastomer is present in the range of about 18-28% by weight of the ink and the pigment is present in the range of about 10-22% by weight of the ink. The solvent system comprises a volatile component present in the range of about 8-30% by weight of the ink and having a boiling point less than about 180°C and an essentially non-volatile component which is predominantly a low viscosity hydrocarbon oil, essential oil, petroleum derivative, plasticizer or mixtures thereof having a boiling point less than about 300°C and greater than about 180°C being present in the range of about 21 to 50.5% by weight of the ink. The solvent system may also include up to 15% by weight of the ink composition of a non-volatile high viscosity material having a boiling point greater than about 300°C.
398182
Meredith & Finlayson
Scripto Inc.
LandOfFree
Initially erasable ink composition for a ball point writing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Initially erasable ink composition for a ball point writing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initially erasable ink composition for a ball point writing... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1325374