Title: Production of a color developing record sheet containing metal-modified novolak resin particles

Abstract: Rheologically stable aqueous dispersions of metal-modified novolak resin particles are prepared by grinding an aqueous mixture of the metal-modified novolak resin and anionic polymeric dispersing agent in the presence of a small amount of an organo-phosphorus compound containing two or more phosphonic acid or alkali metal phosphonate groups per molecule. Dispersions of the metal-modified resin particles so produced may be incorporated in color developing coating compositions containing a binder which may be applied and dried on a carrier paper to produce a pressure-sensitive record sheet.

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Inventors: Kelley, Russell D. (Waverly, OH, US)

Application Number: 575055
Filing Date: 1975-05-05
Publication_date: 1977-07-05
Assignee: The Mead Corporation (Dayton, OH)
Primary Class(es): 427/150 427/145, 427/146, 427/261, 428/454, 428/530, 428/702, 428/914, 503/209, 503/212, 503/225, 524/123, 524/124, 524/510
Other Classes:
US Patent Ref:

2800457	Jul, 1957	Green et al.	252/316.
3455721	Jul, 1969	Phillips et al.	282/27.
3516845	Jun, 1970	Brockett	428/539.
3672935	Jun, 1972	Miller et al.	282/27.
3732120	May, 1973	Brockett et al.	428/307.

Other Refs:
Primary Examiner: Herbert, Jr., Thomas J.
Assistant Examiner:
Attorney: Cagle; Stephen H., Palmer; Wilson G.