3 results about "Isophthalic acid" patented technology

A luminescent solar collector is provided comprising a substrate and a light energy converter, such as a photocell, operatively connected thereto. The substrate is molded from a thermoplastic composition comprising a polymer and a fluorescent dye or quantum dot dispersed therein. The polymer comprises a polycarbonate unit and a polyester unit derived from the reaction of isophthalic acid, terephthalic acid, and resorcinol (ITR). In further embodiments, the substrate comprises two or more layers including a fluorescent layer and an overcoat layer. The fluorescent layer comprises the fluorescent dye or quantum dot and a polycarbonate polymer. The overcoat layer comprises the ITR unit. The substrate, in single layer or multiple layer form, has reduced haze levels over a prolonged period of time.

The invention provides a method for producing a terylene modifier SIPE (5-Sodium Sulfodimethyl Isophthalate) using s composite catalyst. The method comprises the following steps: charging, low temperature reaction and a temperature reaction. According to the prepared SIPE product, DEG content is 0.08-0.15%; purity is 94.77-95.34% (Liquid Chromatogram); acid value is 0.34-0.41 mgKOH/g; the productis a light yellow transparent liquid and the content is 40.04-40.21%; and the saponification value is 126.11-126.65 mgKOH/g.