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...
Patent
1980-09-02
1982-04-27
Lilling, Herbert J.
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...
106 20, 106 21, 106 22, 106 23, 106 32, 524462, 524463, 524233, 524376, 524113, 524364, 524577, B44C 122, C08K 501, C09D 1116, C08K 502
Patent
active
043270069
ABSTRACT:
A writing liquid is formed from a solvent for an organic styrene resin pigment in combination with a chlorofluoroalkane of from 1 to 3 carbon atoms. The potential toxicity of the solvent (or solvent vapors) is eliminated and writing speeds of the writing liquid are improved by the addition of the chlorofluoroalkane. The writing liquid is used for transparentizing an opaque layer of an organic styrene resin pigment, uniformly distributed as fine particles in a film-forming binder carried on a transparent or opaque support. When the writing liquid is applied to the opaque layer using a suitable writing instrument, such as a pen, the opaque layer immediately becomes transparent where it is contacted with the solvent.
REFERENCES:
patent: 3276870 (1966-10-01), Bitting et al.
patent: 3948668 (1976-04-01), Hayer et al.
patent: 3997498 (1976-12-01), Reese et al.
patent: 4077936 (1978-03-01), Tanaka et al.
La Cellophane
Lilling Herbert J.
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