Process for the preparation of heterocyclic styryl compounds and reaction products
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0240011A2
公开(公告)日:1987-10-07
Heterocyclic compounds having the formula
where R is hydrogen. methyl or ethyl
R, independently in each occurrence is hydrogen, alkyl group of 1-4 carbons, and -C(R):CH-Q
n is a number having an average value from 0 to 5
Q has the formula
Z is = 0, = S, or = N-R2
R is selected from hydrogen, alkyl, aryl, alkaryl, and aralkyl
is a monocyclic or bicyclic heterocyclic ring selected from the group consisting of pyridine, pyrazine, pyridazine, pyrimidine, quinoline, isoquinoline, quinoxaline, quinazoline and phthalazine
x is 1 to 3
with the proviso that when n is zero, the heterocyclic ring has at least two -C(R):CH-Q groups
are prepared by condensing nitrogen heterocyclic compounds such as trimethyl pyridine with dialdehydes and heterocyclic aldehydes such as furfural. These can be further reacted and chain extended with bismaleimides or polymaleimides. The compounds and their reaction products are useful to make heat resistant composites with various fibers such as graphite fibers.
具有以下式子的杂环化合物
其中 R 为氢、甲基或乙基
每次独立出现的 R 分别为氢、1-4 个碳原子的烷基和-C(R):CH-Q
n 是一个平均值为 0 至 5 的数字
Q 的式子为
Z 是=0、=S 或=N-R2
R 选自氢、烷基、芳基、烷芳基和芳烷基
是单环或双环杂环,选自由吡啶、吡嗪、哒嗪、嘧啶、喹啉、异喹啉、喹喔啉、喹唑啉和酞嗪组成的组
x 为 1 至 3
但当 n 为零时,杂环至少有两个 -C(R):CH-Q 基团
通过将含氮杂环化合物(如三甲基吡啶)与二醛和杂环醛(如糠醛)缩合制备。这些化合物可与双马来酰亚胺或聚马来酰亚胺进一步反应和扩链。这些化合物及其反应产物可与各种纤维(如石墨纤维)制成耐热复合材料。
Bismaleinimid-Harze
申请人:BASF Aktiengesellschaft
公开号:EP0300329A2
公开(公告)日:1989-01-25
Die Erfindung betrifft Bismaleinimidharze, die als Bismaleinimid ein solches der Formel
mit R und R′ = Wasserstoff, Methyl oder Phenyl, enthalten.
本发明涉及双马来酰亚胺树脂,该树脂含有一种双马来酰亚胺,其式为
式中 R 和 R′ = 氢、甲基或苯基。
Thermosettable resin compositions
申请人:HERCULES INCORPORATED
公开号:EP0304009A1
公开(公告)日:1989-02-22
Disclosed are a reaction mixture for preparing a polyfunctional maleimide-based thermosettable resin composition comprising a bismaleimide or a polymaleimide and an ether derivative of an alkenylphenol; the polyfunctional maleimide-based thermosettable resins comprising the reaction product of the reaction mixture; a process for the manufacture of the resins; and their use in a prepreg containing carbon, boron. glass or other fibers.
Novel polyfunctional maleimide-based thermosettable resin compositions are provided which have improved processing capability and which comprise at least one polyfunctional maleimide compound and at least one alkenyl derivative of 2,2′-dihydroxybiphenyl.