Marker ink for writing board

Details Marker ink for writing board Marker ink for writing board

1978-12-12

1981-03-17

Nielsen, Earl A.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 23, 106 26, 106187, 106189, 106197, 260 312R, 260 324, 260 328R, 260 334R, C09D 1100

Patent

active

042564921

ABSTRACT:
A colored marker ink for use on a writing board is manufactured by blending a colorant, a resin and a mixed solvent consisting of a good solvent for the resin possessing a high speed of vaporization and a non-solvent for the resin possessing a lower speed of vaporization than that of the good solvent. When a letter or figure is written on the board with this marker ink, the resin component of the ink thus applied to the board gels into opaque lines in the shape of the letter or figure in consequence of gradual vaporization of the good solvent.

REFERENCES:
patent: 2343781 (1944-03-01), Locke
patent: 2991184 (1961-07-01), Bernardi et al.
patent: 3280036 (1966-10-01), Howell
patent: 3486912 (1969-12-01), Dyson
patent: 4042545 (1977-08-01), Defago et al.
patent: 4070322 (1978-01-01), Hwang et al.

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