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公开(公告)号：US20170275427A1
公开(公告)日：2017-09-28
申请号：US15505661
申请日：2015-11-24
Applicant: Dow Global Technologies LLC
Inventor： Asjad Shafi , Krishnan Karunakaran , Kamesh R. Vyakaranam
CPC classification number: C08J5/04 , B29C53/58 , B29C2035/0827 , B29D23/001 , C08J3/243 , C08J2363/10
Abstract: A multistage filament winding process for manufacturing a composite article using a dual chemistry formulation including the steps of (a) providing a dual chemistry formulation containing components to effectuate dual cure of the formulation; (b) winding fibers on a liner or on a mandrel; (c) impregnating the wound fibers of step (b) with the dual chemistry formulation; (d) activating a first reaction (A) by UV or thermal-free radical initiation sufficient to form first macroscopic gels and to allow the first macroscopic gels to phase separate from the remaining substantially unreacted components in the formulation; (e) optionally, activating a second reaction by heating through IR lamps or other heating apparatus and controlling the second reaction sufficient to form second macroscopic gels subsequent to the formation of the first macroscopic gels which have gelled and phase separated in the formulation; (f) repeating steps (a)-(d) until a composite article having a predetermined thickness is formed; and (g) heating the formed composite article of step (f) sufficient to form a final composite article product having a predetermined glass transition temperature; a cured thermoset article prepared by the above process; and a process for manufacturing spoolable pipe.
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公开(公告)号：US20160280846A1
公开(公告)日：2016-09-29
申请号：US15032324
申请日：2014-12-02
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Krishnan Karunakaran , Marvin L. Dettloff , Nikhil K.E. Verghese , Ha Q. Pham
CPC classification number: C08G59/50 , C08F283/065 , C08G59/245 , C08G59/4215 , C08J3/243 , C08J3/246 , C08J2363/02 , C08K5/14 , C08L51/08 , C08L63/00 , C08L83/00 , C08L51/00 , C08L71/00
Abstract: A dual cure system including at least two different and separate types of chemical reactions occurring as the process of the present invention proceeds including, for example, the following two reactions: (1) free radical polymerization of methacrylated or acrylated polyol; and (2) an epoxy-curing agent reaction. The dual cure system of the present invention advantageously provides a first cure reaction of methacrylated or acrylated polyol followed by a second epoxy-curing agent thermoset reaction to form a cured thermoset exhibiting an elongation property of greater than about 5%.
Abstract translation: 包括如本发明的方法发生的至少两种不同和分开的化学反应类型的双重固化体系包括例如以下两个反应：（1）甲基丙烯酸酯化或丙烯酸酯化的多元醇的自由基聚合; 和（2）环氧固化剂反应。 本发明的双重固化体系有利地提供了甲基丙烯酸酯化或丙烯酸酯化的多元醇的第一固化反应，然后进行第二次环氧固化剂热固化反应以形成展现出大于约5％的伸长率的固化的热固性材料。
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公开(公告)号：US20150252183A1
公开(公告)日：2015-09-10
申请号：US14426186
申请日：2013-10-17
Applicant: Dow Global Technologies LLC
Inventor： Rui Xie , Krishnan Karunakaran , Nikhil K. E. Verghese
IPC: C08L63/00 , C08L21/00 , C08L33/08 , C09D163/00 , C09J133/08 , C09D109/00 , C09D133/08 , C09J163/00 , C09J109/00 , C09J121/00 , C08L9/00 , C09D121/00
CPC classification number: C08L63/00 , C08F283/10 , C08G59/50 , C08J5/24 , C08J2363/00 , C08L9/00 , C08L21/00 , C08L33/08 , C08L2205/03 , C08L2207/53 , C09D109/00 , C09D121/00 , C09D133/08 , C09D163/00 , C09J109/00 , C09J121/00 , C09J133/08 , C09J163/00 , C08L51/04
Abstract: A process for producing a dispersion comprising: dispersing a) a core shell rubber into b) a hardener component selected from the group consisting of anhydrides, amines, phenol novolacs, and mixtures thereof in a dispersion zone under dispersion conditions wherein said dispersion zone does not contain a solvent and wherein said dispersion conditions comprise a dispersion temperature of 40° C. to 100° C., a Reynolds Number greater than 10, and a dispersion time of from 30 minutes to 80 minutes is disclosed.
Abstract translation: 一种制备分散体的方法，包括：a）核壳橡胶b）在分散条件下在分散区域中的选自酸酐，胺，苯酚酚醛清漆及其混合物的硬化剂组分，其中所述分散区不 含有溶剂，其中所述分散体条件包括分散温度为40℃至100℃，雷诺数大于10，分散时间为30分钟至80分钟。
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