Printing ink binder resin
Patent 4002585 Issued on January 11, 1977. Estimated Expiration Date: 
January 11, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 11, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1623901 2861966 InventorsAssigneeApplicationNo. 630030 filed on 11/07/1975US Classes:525/54.44, At least one previously formed solid polymer derived from ethylenic monomers only525/133, Contacting two or more solid polymers with a phenolic reactant; or contacting a solid polymer with a phenolic reactant and subsequently contacting the treated polymer with an additional solid polymer525/139, Solid polymer derived from ethylenic reactants only is derived from reactant containing at least two ethylenic groups525/54.42, Previously formed solid polymer chemically reacted with natural resin or derivative525/68With solid polymer derived from at least one phenolic reactant wherein at least one of the reactants forming the solid polymer is saturated; or with SPFI wherein at least one of the necessary ingredients is a phenolic reactant or with a reaction product thereof; or with phenolic-containing SICPExaminersPrimary: Marquis, Melvyn I.Assistant: Parker, W. E. Attorney, Agent or FirmForeign Application Priority Data1974-11-08 JAAbstractPrinting ink binders comprising a reaction product of (a) rosin, (b) ,ଲ-ethylenically unsaturated carboxylic acid-modified petroleum resin, (c) resol type phenolformaldehyde pre-condensate and (d) polyhydric alcohol, which have an acid value of not more than 30, a softening point of not less than 140° C., a viscosity of a 33% by weight linseed oil solution of not less than Y by Gardner-Holdt bubble viscometer at 25° C. and a tolerance to high-boiling aliphatic hydrocarbon of not less than 5. The reaction products have high softening point and high solubility to solvents, and are useful as binder resins for printing ink. The reaction products in the presence of cyclopentadiene polymer also provide excellent ink binders which have a higher softening point. | |
