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    Fire resistant phosphate cyanate esters
    11.
    发明授权
    Fire resistant phosphate cyanate esters 有权

    公开(公告)号：US10913898B1

    公开(公告)日：2021-02-09

    申请号：US16178230

    申请日：2018-11-01

    申请人： The United States of America, as represented by the Secretary of the Navy

    发明人： Benjamin G. Harvey ,  Andrew P. Chafin ,  Michael D. Garrison

    IPC分类号： C09K21/14 ,  C09K21/12 ,  C07F9/12 ,  C08G79/04

    摘要： This invention describes resins with phosphate cores and a simple, three-step process for their synthesis. Preferred resins are cyanate ester resins with bridging phosphate groups. These resins can be cured to produce thermoset polymers having Tgs of between 131 and >360° C. depending on the number of cyanate ester groups per phosphate and the substitution pattern of the aromatic rings. The high char yields of these resins, up to about 67%, coupled with the phosphate core means that these materials will have applications as fire-resistant polymers. Additionally, these materials can potentially be blended with conventional cyanate esters or other compatible thermosetting resins to improve the fire resistance of composite materials. Other applications may include use in fire-resistant circuit boards, or as surface coatings to reduce flammability of conventional composite materials or thermoplastics.

    Renewable bisphenols and resins from salicylic acid
    16.
    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

    申请人： The United States of America as represented by the Secretary of the Navy

    发明人： Benjamin G. Harvey ,  Heather A. Meylemans ,  Michael E. Wright ,  Andrew Chafin

    IPC分类号： C08G64/20 ,  C08G64/24 ,  C08G64/28 ,  C07C37/20 ,  C07C37/00 ,  C08G64/30 ,  C08G73/00 ,  C08L69/00 ,  C08K7/14 ,  C08K7/06 ,  C07C39/16 ,  C08L79/00 ,  C08G64/06

    CPC分类号： C07C37/20 ,  C07C37/002 ,  C07C37/50 ,  C07C51/353 ,  C08G8/10 ,  C08G8/12 ,  C08G64/06 ,  C08G64/24 ,  C08G64/28 ,  C08G64/307 ,  C08L69/00 ,  C07C65/105 ,  C07C39/16 ,  C07C39/04

    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。

    Fire resistant phosphate cyanate esters
    20.
    发明授权
    Fire resistant phosphate cyanate esters 有权

    公开(公告)号：US11898082B1

    公开(公告)日：2024-02-13

    申请号：US17065321

    申请日：2020-10-07

    申请人： The United States of America, as represented by the Secretary of the Navy

    发明人： Benjamin G. Harvey ,  Andrew P. Chafin ,  Michael D. Garrison

    IPC分类号： C09K21/14 ,  C07F9/12 ,  C09K21/12 ,  C08G79/04

    CPC分类号： C09K21/14 ,  C07F9/12 ,  C08G79/04 ,  C09K21/12

    摘要： This invention describes resins with phosphate cores and a simple, three-step process for their synthesis. Preferred resins are cyanate ester resins with bridging phosphate groups. These resins can be cured to produce thermoset polymers having Tgs of between 131 and >360° C. depending on the number of cyanate ester groups per phosphate and the substitution pattern of the aromatic rings. The high char yields of these resins, up to about 67%, coupled with the phosphate core means that these materials will have applications as fire-resistant polymers. Additionally, these materials can potentially be blended with conventional cyanate esters or other compatible thermosetting resins to improve the fire resistance of composite materials. Other applications may include use in fire-resistant circuit boards, or as surface coatings to reduce flammability of conventional composite materials or thermoplastics.