C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
42/16, 402/48
C08G 8/32 (2006.01) B41M 5/155 (2006.01) C08G 8/24 (2006.01) C08G 8/28 (2006.01)
Patent
CA 1107434
PRODUCTION OF NOVEL METAL MODIFIED NOVOLAK RESINS AND THEIR USE IN PRESSURE-SENSITIVE PAPERS Inventor: John J. Stolfo Abstract of the Disclosure A novel metal modified novolak resin is prepared. The metal modified novolak resin is an electron acceptor and is further characterized by its compatability with the surface properties of a paper substrate. The metal modified novolak resin comprises a reaction product of a novolak resin and a metal salt. The novolak resin is a reaction product of a mixture contain- ing a para-substituted phenol selected from the group consisting of para- alkylphenols having alkyl groups of about 1 to about 12 carbon atoms, para- phenylphenol and mixtures thereof, salicylic acid and formaldehyde. The novel metal modified novolak resin is prepared by heating a mixture containing one or more para-substituted phenols, salicylic acid, formaldehyde and an acid catalyst for a period of time sufficient to substantially completelyreact the phenols, salicylic acid and formaldehyde to form a melted novolak resin. The melted novolak resin is mixed with a zinc salt in a inert atmos- phere to form the metal modified novolak resin. The metal modified novolak resin prepared as above can be coated on a paper substrate to produce a pressure-sensitive paper.
307974
Ridout & Maybee Llp
The Mead Corporation
LandOfFree
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