Melting point determination analyses indicate that the five acid–base complexes are not the ordinary superposition of the reactants and they are more stable than the original reactants.doi:10.2298/JSC1000011ZPu-Su ZhaoWANG XIANFang-Fang Jian...
and a second polymer liquid crystalline polyester comprising at least one selected from the group consisting of carboxylic acid, hydroxybenzoic acid, dihydroxy azo], naphthalene, naphthalene dicarboxylic acid, acid oxybisbenzo u00efque and hydr oquinones substitution, where the parties are at least appr...
NEW MATERIAL:p-Hydroxybenzoic acid 3-phenylpropyl ester of formula. USE:Color developing agent for heat-sensitive recording paper. Since the compound has lower melting point than 2,2-bis(4-hydroxyphenyl)propane, it enables the recording with low energy e.g. in the heat-sensitive facsimile system...
(ii) an acceptor sheet having an acceptor layer consisting essentially of a color developer which induces color formation in the leuco dye, the color developer being a mixture of a bisphenol derivative of the following formula and a p-hydroxybenzoic acid ester with a melting point of 100掳 C....
BLENDS OF LIQUID CRYSTALLINE POLYMERS OF HYDROQUINONE POLY(ISO-TEREPHTHALATES) P-HYDROXYBENZOIC ACID POLYMERS AND ANOTHER LCP CONTAINING OXYBISBENZENE AND NAPHTHALENE DERIVATIVESwe describe a mixture comprising a first polymer liquid crystal polyester consisting of units (i), (ii), (iii) and (iv), ...
Hydroquinone poly(iso-terephthalates) containing residues of p-hydroxybenzoic acidA high modulus, high strength melt processable copolyester consisting essentially of recurring units (I), (II), (III) and (IV): ##STR1## wherein said copolyester has a melting point in the range of from about ...
NEW MATERIAL:p-Hydroxybenzoic acid 3-phenylpropyl ester of formula. USE:Color developing agent for heat-sensitive recording paper. Since the compound has lower melting point than 2,2-bis(4-hydroxyphenyl)propane, it enables the recording with low energy e.g. in the heat-sensitive facsimile system...
aromatic polyesters are described on the basis of isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and arylene diol monomers, each of the five levels defined in the product, and the combination of polymers with a broad the thermal and mechanical properties, excellent overall....
the invention is a copolyester of orientation in a molten state, a good performance and high strength fibers.the melting point ranging from approximately 340 u00b0c about setting. they can be treated by melting. compositions containing about 30% by weight of glass fibers are advantageously of ...
and a second LCP polyester polymer comprising at least one moiety selected from the group consisting of hydroxybenzoic acid, hydroxynaphthalene carboxylic acid, dihydroxy naphthalene, naphthalene dicarboxylic acid, oxybisbenzoic acid and substituted hydroquinones wherein the said moiety or moieties comprise(...