High frequency titrations of polydicarboxylic acid copolymers: Polyitaconic acid‐Co‐styrene and polymaleic acid‐Co‐styrene

Abstract

A useful method, more rapid and more accurate than elemental analysis, has been developed to determine the composition of copolymers of itaconic anhydride and maleic anhydride with styrene. The method involves a high frequency titration of the sample. The method can also be used to detect traces of acidic impurities in polymers and in the identification of mixtures of similar acidic copolymers. Titration indicates that the acid segments in the copolymers of itaconic acid–styrene, maleic acid–styrene, and the homopolymer polyitaconic acid act as dibasic acids. The method appears to have a sensitivity that permits identification and approximate resolution of two carboxylate species in the same polymer.

Polyelectrolyte Builders as Detergent Phosphate Replacements

“…These are PE32, PE35, PE76, PE58, PE30, PE13, and Gantrez AN-119 (Table 12). In the case of the common detergent phosphate, STPP, 21 of the polyelectrolytes tested here (Table V) were found to be better sequestering agents for calcium ions.…”

“…Drougas, Timmick, and Guile recommended the use of high-frequency titration for the characterization of polydicarboxylic acid copolymers, namely itaconic acid-styrene and maleic acid-styrene copolymers (21). Their method allows the identification and approximate resolution of two carboxylate species in the same polymer.…”

Manual of Plastics Analysis

“…before reaction with polyol commences) is given by: 50 x F x 119.13 gphenylisocyanatepresentinWA(g)ofreaction 1000…”

Characterization and detection of polyanions by direct polyelectrolyte titration

“…In principle, turbidimetric ''3 "), potentiometric 13-'@, conductometric [16][17][18][19][20][21][22][23] or streaming potential measurements 24) can also be used instead of optical measurements for end-point detection, but the optical measurement has the advantage of being simpler to carry out and very sensitive.…”