US4226962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of novel metal modified novolak resins and their use in pressure sensitive papers
Assignee: Mead Corp
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Filing: 1978-12-11
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Granted: 1980-10-07
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Expires: 1998-12-11
Abstract
Abstract 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 containing a para-substituted phenol selected from the group consisting of paraalkylphenols 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 completely react the phenols, salicylic acid and formaldehyde to form a melted novolak resin. The melted novolak resin is mixed with a zinc salt in an inert atmosphere 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.
Inventors
- 👤 John J. Stolfo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:57
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; C08G8/28; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
186 words
A process for the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said metal modified novolak resin being further characterized by compatability with the surface properties of a paper substrate comprising: (a) heating a mixture consisting essentially of one or more para-substituted phenols, salicylic acid, formaldehyde and an acid catalyst for a period of time sufficient to substantially completely react said phenols and said salicylic acid with said formaldehyde to form a melted novolak resin, said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt; (b) mixing said melted novolak resin with a metal salt in an inert atmosphere to form said metal modified novolak resin, said metal salt being selected from the metal alkanoate salts of an alkanoic acid having 1 to 3 carbon atoms, metal hydroxybenzoates, metal dibenzoates and metal acetylacetonates, said metal being selected from the group consisting of copper, zinc, cadmium, aluminum, indium, tin, chromium, cobalt and nickel.
Claim 2
Dependent Claim
186 words
A process for the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said metal modified novolak resin being further characterized by compatability with the surface properties of a paper substrate comprising: (a) heating a mixture consisting essentially of one or more para-substituted phenols, salicylic acid, formaldehyde and an acid catalyst for a period of time sufficient to substantially completely react said phenols and said salicylic acid with said formaldehyde to form a melted novolak resin, said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt; (b) mixing said melted novolak resin with a metal salt in an inert atmosphere to form said metal modified novolak resin, said metal salt being selected from the metal alkanoate salts of an alkanoic acid having 1 to 3 carbon atoms, metal hydroxybenzoates, metal dibenzoates and metal acetylacetonates, said metal being selected from the group consisting of copper, zinc, cadmium, aluminum, indium, tin, chromium, cobalt and nickel.
Claim 3
Dependent Claim
32 words
The process of claim 1, wherein said para-substituted phenols are selected from the group consisting of para-alkylphenols having an alkyl group of 1 to about 12 carbon atoms, para-phenylphenol and mixing thereof.
Claim 4
Dependent Claim
33 words
The process of claim 1 wherein said metal salt is a zinc salt of an alkanoic acid having 1 to 3 carbon atoms and said melted novolak resin also contains an ammonium compound.
Claim 5
Dependent Claim
129 words
A novolak resin, said novolak resin being useful in the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said novolak resin being further characterized by compatability with the surface properties of a paper substrate, said novolak resin being a reaction product of a mixture consisting essentially of: (a) a para-substituted phenol selected from the group consisting of para-alkylphenols having an alkyl group of from about 1 to about 12 carbon atoms, para-phenylphenol and mixtures thereof; (b) salicylic acid; (c) formaldehyde; and (d) an acid catalyst; said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt.
Claim 6
Dependent Claim
129 words
A novolak resin, said novolak resin being useful in the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said novolak resin being further characterized by compatability with the surface properties of a paper substrate, said novolak resin being a reaction product of a mixture consisting essentially of: (a) a para-substituted phenol selected from the group consisting of para-alkylphenols having an alkyl group of from about 1 to about 12 carbon atoms, para-phenylphenol and mixtures thereof; (b) salicylic acid; (c) formaldehyde; and (d) an acid catalyst; said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt.
Claim 7
Dependent Claim
133 words
A process for the production of a novolak resin, said novolak resin being useful in the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said novolak resin being further characterized by compatability with the surface properties of a paper substrate, said process comprising heating a mixture consisting essentially of: (a) a para-substituted phenol, said para-substituted phenol being selected from the group consisting of para-alkyl phenols having an alkyl group of 1 to 12 carbon atoms, para-phenylphenol and mixtures thereof: (b) salicylic acid; (c) formaldehyde; and (d) an acid catalyst; said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt.
Claim 8
Dependent Claim
133 words
A process for the production of a novolak resin, said novolak resin being useful in the preparation of a metal modified novolak resin, said metal modified novolak resin being an electron acceptor suitable for use in a pressure-sensitive copy system and being co-reactive with color precursors of the electron donor type, said novolak resin being further characterized by compatability with the surface properties of a paper substrate, said process comprising heating a mixture consisting essentially of: (a) a para-substituted phenol, said para-substituted phenol being selected from the group consisting of para-alkyl phenols having an alkyl group of 1 to 12 carbon atoms, para-phenylphenol and mixtures thereof: (b) salicylic acid; (c) formaldehyde; and (d) an acid catalyst; said mixture having a pH below 4 and being substantially free of any alkaline earth metal salt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |