Carboxylic acid copolymers

The compositions consist of a heat-plastified mixture of an ethylene homopolymer or copolymer, about 3 to 30 pbw of an elastomer, a stability control agent, which is a partial ester of a long chain fatty acid with a polyol, higher allyl amine, fatty acid amide or olefinically unsaturated carboxylic acid copolymer, and a hydrocarbon blowing agent having from 1 to 6 carbon atoms and a boiling point between -175 and 50C. 

W.L. Vaughn and T.J. McKeand, Jr, Ionomers of ethylene/carboxylic acid copolymers, US Patent 5320905, assigned to The Dow Chemical... 

EN90 Danielson, S.J., Ponticello, N., Sutton, R., Oenick, M. and Swartz, J. (1992). Novel carboxylic acid copolymer beads and thdr use in thin-film immunoassays for thyroxine, phenytoin, phenobarbital and digoxin. Clin. Chem. 38, 1096, Abstr. 696. 

T he type of counterion used in an ion-containing polymer can have a substantial effect on the physical properties of the material. Many studies have been made in the past comparing the properties of metal- or ammonium-neutralized ionomers two recent books on ion-containing polymers present a comprehensive review of the literature (1,2). There is a wealth of information comparing different metal counterions in neutralized or partially neutralized ethylene-carboxylic acid copolymers. Rees and Vaughan studied the melt flow and tensile properties of... 

Ketjenlube . [Akzo] Butanol ester of alpha olefln- carboxylic acid copolymers lubricant. 

The lactic acid/hydroxy carboxylic acid copolymer is composed of 85-100 mol-% L- or D-lactic acid imit and 0-15 mol-% hydroxy carboxylic acid unit (18). Preferably, a PLA resin can be obtained by selecting a starting material having a necessary structure from a lactide that is a cyclic lactic acid dimer, a glycolide that is a cyclic... 

Blends Containing PPE Functionalized with Carboxylic Acid Copolymer Formation by Amine + Carboxyiic Acid Reaction... 

This reaction occurs randomly on the homopolymer chain to create a random amide(carboxylic acid) copolymer. Hydrolyzed amide polymer is prepared by adding the amount of sodium hydroxide needed to hyrolyze the desired fraction of amide units to a 1 weight percent solution of amide polymer and maintaining that solution at 60°C for 2 hr. The reaction mixture is precipitated into 5 times its volume of 2-propanone, filtered, the precipitate washed with 2-propanone, ground in a blender for 2 minutes, and dried under vacuum to constant weight. This procedure is that of Meister, et al. (31). 

Although these carboxylic acid copolymers are potential candidates for HT-PEMFCs, their most prominent feature was their use for further chemical cross-linking of the carboxylic acid side groups using different cross-linkers creating... 

Several groups " have studied the response of (ethylene/carboxylic acid) copolymers to an applied stress or strain. This type of measurement has been the principle method for determining the unusual features of ionomer behavior. The results of such studies provide clear evidence for the presence of ionic clusters. 

Adhesives are an area where PVC/carboxylic acid copolymer resins sometime find use. As stated before, these resins have an affinity to polar, hydroxyl-laden surfaces and often yield improved adhesion to these types of surfaces. 

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