Pressure sensitive adhesive containing polymerized alkoxyalkyl ester of unsaturated carboxylic acid
Patent 4077926 Issued on March 7, 1978. Estimated Expiration Date: 
March 7, 1995. 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.
March 7, 1995. 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 ReferencesInventorsAssigneeApplicationNo. 05/463483 filed on 04/24/1974US Classes:524/558, Acid or ester contains an oxygen atom which is other than part of a free carboxyl group or carboxylic acid ester group428/355AC, Including addition polymer from alpha-beta unsaturated carboxylic acid (e.g., acrylic acid, methacrylic acid, etc.) or derivative thereof428/355R, Adhesive compositions428/463, Ester, halide or nitrile of addition polymer524/508, With solid polymer derived from at least one reactant wherein at least one of the reactants forming the solid polymer is a phenol or inorganic phenolate; or with SPFI or SICP derived from phenol or inorganic phenolate wherein at least one of the necessary reactants is saturated524/833, Two or more carboxylic acids or derivatives525/126, Contacting solid polymer from ethylenic reactants only with ethylenic reactant wherein said contacting is either concurrent with or subsequent to contacting of said solid polymer with the -N=C=X reactant or polymer thereof525/134, Contacting with aldehyde or aldehyde-type reactant or polymer therefrom525/162, Solid polymer derived from ethylenic reactant only derived from reactant containing hydroxyl or ether group525/263, Specified material contains a peroxy group, i.e., -O-O-525/296, Nitrogen atom is part of a carboxylic acid amide group525/301, Oxygen atom is part of a carboxylic acid group526/312, Contains oxygen atom bonded to a carbon atom526/318.2, Carboxylic acid contains two or more carboxyl groups526/318.25, With hydrocarbon, vinyl chloride or vinylidene chloride monomer526/318.42, Hydroxyl group526/931PRESSURE SENSITIVE ADHESIVEExaminersPrimary: Levin, Stanford M.Attorney, Agent or FirmAbstractThe pressure sensitive adhesive of this invention has improved shear resistance while still having good tackiness and stability in a humid atmosphere, it is prepared by solution polymerization, or by other methods, and has carboxylic acid groups therein, an alkoxyalkyl ester of an unsaturated carboxylic acid, an hydroxyalkyl ester of an unsaturated carboxylic acid having at least one hydroxyl functionality and, in many cases, an alkyl acrylate or an alkyl methacrylate. A crosslinker may be used, and the adhesive cured by heat, without destroying the proper relationship of tack and shear resistance. | |
