Color-developer for pressure-sensitive recording sheets

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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282 275, 525480, 525481, 528137, 528139, 528143, 528144, 528150, 528153, 528155, 528161, C08G 812, C08G 820, C08G 824, C08G 828

Patent

active

044004923

ABSTRACT:
Disclosed is a color-developer for pressure-sensitive recording sheets, comprising a co-condensate of a reaction intermediate of a p-substituted phenol and a trifunctional or higher phenol, or a polyvalent metal salt of said co-condensate, said reaction intermediate being obtained by the reaction of said p-substituted phenol under acidic conditions with formaldehyde or a substance capable of generating formaldehyde.

REFERENCES:
patent: 2208331 (1940-07-01), Olin
patent: 2809178 (1957-10-01), Turner et al.
patent: 3516845 (1970-06-01), Brockett
patent: 3663256 (1972-05-01), Miller et al.
patent: 3672935 (1972-06-01), Miller et al.
patent: 3723156 (1973-03-01), Brockett et al.
patent: 3732120 (1973-05-01), Brockett et al.
patent: 3737410 (1973-06-01), Mueller
patent: 3988386 (1976-10-01), Hesse et al.
patent: 4025490 (1977-05-01), Weaver
patent: 4112160 (1978-09-01), Kako et al.
patent: 4165102 (1979-08-01), Bodmer
patent: 4165103 (1979-08-01), Bodmer
patent: 4173684 (1979-11-01), Stolfo
patent: 4216299 (1980-08-01), Kikuga et al.
patent: 4216300 (1980-08-01), Kikuga et al.
patent: 4235769 (1980-11-01), Asano et al.
patent: 4345054 (1982-08-01), Takeda et al.

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