Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-01-19
1980-11-25
Schain, Howard E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 302, 260 308R, 260 457PH, 525504, 528149, 528151, 528161, 428531, C08G 812, C08G 824, C08G 828, C08K 513
Patent
active
042357691
ABSTRACT:
Disclosed is a color-developing composition for pressure-sensitive recording sheet material of the self-contained type comprising (A) 100 parts by weight of a copolymer obtained by reacting a p-alkylphenol having an alkyl moiety of from 1 to 12 carbon atoms and phenol with formaldehyde and (B) from 1 to 20 parts by weight of a hindered phenolic compound selected from phenols having an alkyl, alkylene or hydroxyl substituent radical in at least the 2- or 6-position, or both, of the benzene ring and derivatives thereof, the copolymer and the hindered phenolic compound being homogeneously dissolved in mutual solution. The hindered phenolic compound is either added to the starting materials for the preparation of the copolymer or, at the end of the copolymerization reaction, added to the resulting copolymer and dissolved homogeneously in mutual solution.
REFERENCES:
patent: 3652561 (1972-03-01), Dexter
patent: 3723156 (1973-03-01), Brockett et al.
patent: 3819572 (1974-06-01), Dexter et al.
patent: 3887516 (1975-06-01), Song
patent: 3969306 (1976-07-01), Borman et al.
Chem. Abstracts, vol. 86, 1977, 131189s, Tsukamoto et al.-effective date Jul. 23, 1976.
Asano Makoto
Kawashima Saburo
Kobayashi Tadashi
Sugimoto Kenichi
Mitsui Toatsu Chemicals Inc.
Schain Howard E.
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