Renewable bisphenols and resins from salicylic acid
    2.
    发明授权
    Renewable bisphenols and resins from salicylic acid 有权
    水杨酸可再生双酚和树脂

    公开(公告)号:US09517987B1

    公开(公告)日:2016-12-13

    申请号:US14692362

    申请日:2015-04-21

    摘要: A method for the selective synthesis of bisphenols, thermosetting resins, and thermoplastics from salicylic acid, the major component of wintergreen oil, and a viable target for engineered biosynthesis. Condensation of salicylic acid, structural analogs of salicylic acid, and derivatives of salicylic acid with short chain aldehydes or ketones and subsequent decarboxylation has the potential to produce bisphenols that are direct replacements for conventional resins, while the steric and electronic effects of salicylic acid improve the efficiency and selectivity of the conversion process. The utilization of renewable polyphenols as precursors to epoxies, poly carbonates, and high temperature thermosets including cyanate esters, provides an opportunity to develop full-performance resins while reducing the use of petroleum based feedstocks. This approach will then diminish the overall environmental impact of resin production while allowing for a sustainable source of phenols.

    摘要翻译: 一种从水杨酸,冬青油的主要组分选择性合成双酚,热固性树脂和热塑性塑料的方法,以及工程生物合成的可行目标。 水杨酸的缩合,水杨酸的结构类似物和水杨酸的衍生物与短链醛或酮和随后的脱羧有可能生产直接替代常规树脂的双酚,而水杨酸的空间和电子效应改善了 转换过程的效率和选择性。 可再生多酚作为环氧树脂,聚碳酸酯和高温热固性物质(包括氰酸酯)的前体的利用提供了开发全性能树脂同时减少使用石油基原料的机会。 然后,这种方法将减少树脂生产的总体环境影响,同时允许可持续的酚类来源。

    Fluorescent nanoparticle test strips for heavy metal detection

    公开(公告)号:US10107787B1

    公开(公告)日:2018-10-23

    申请号:US15247344

    申请日:2016-08-25

    摘要: A testing element, and methods of use therefor, for the detection of target analytes, for example metal ions and other environmental hazards, utilizing ligand functionalized fluorescent nanoparticles on a substrate. The non-toxic, air, and water stable fluorescent nanoparticles of the present invention are made from varying ratios of metals including zinc, silver, copper, and indium and sulfur. By varying the ratios of these metals nanoparticles can be synthesized that emit over a large range of the visible spectrum. Charge transfer between a target analyte and the nanoparticle is readily identified by a fluorescence change allowing for a fast, simple, visual detection system without the need for expensive analytical instrumentation. The test element can have more than one type of functionalized fluorescent nanoparticle which allows for the detection of multiple target analytes using a single test element.