New biosourced chiral cross-linkers were reported for the first time in the synthesis of methyltestosterone (MT) chiral molecularly imprintedpolymers (cMIPs). Isosorbide and isomannide, known as 1,4:3,6-dianhydrohexitols, were selected as starting diols. The cMIPs were synthesized following a noncovalent approach via thermal radical polymerization and monitored by Raman spectroscopy. These cross-linkers
在甲基睾丸酮(MT)手性分子印迹聚合物(cMIPs)的合成中首次报道了新的生物来源的手性交联剂。选择异山梨醇和异甘露糖醇(称为1,4:3,6-二脱水己糖醇)作为起始二醇。按照非共价方法通过热自由基聚合合成cMIP,并通过拉曼光谱法进行监测。这些交联剂通过1 H和13 C核磁共振(NMR)光谱和高分辨率质谱进行了充分表征。交叉极化魔角旋转13 C NMR,傅立叶变换红外光谱,扫描电子显微镜和遵循Brunauer-Emmett-Teller(BET)方法的比表面积用于表征cMIP。交联剂的立体化学对聚合反应活性的影响,评估了MIP的形貌和吸附识别特性。结果表明,与非印迹聚合物(NIP)相比,cMIP在MT的结合能力方面表现出明显的改善。对于高浓度(500 mg L-1)的cMIP-Is(27.298 mg g-1)观察到最高的结合能力。但是,异甘露聚糖同系物cMIP-Im的回收率高达65%,并且具有低浓度(15
A process for preparing isosorbide di(meth)acrylate by transesterifying alkyl (meth)acrylate with isosorbide, comprising the steps of:
(i) reacting alkyl (meth)acrylate with isosorbide in the presence of a catalyst comprising titanium(IV) or zirconium(IV) and a stabilizer in the presence of an azeotroping agent which forms an azeotrope with the alcohol bound in the alkyl (meth)acrylate,
(ii) continuously distilling off the azeotrope of azeotroping agent and alcohol, wherein steps (i) and (ii) are conducted simultaneously until the isosorbide has been essentially fully converted,
(iii) adding water to the product mixture which comprises isosorbide (meth)acrylate and is obtained in steps (i) and (ii) and removing the hydrolyzate of the catalyst comprising titanium(IV) or zirconium(IV),
(iv) distilling unconverted alkyl (meth)acrylate and azeotroping agent out of the product mixture,
(v) distilling off water from the product mixture,
wherein step (iv) can also be conducted before step (iii) and steps (iv) and (v) can also be conducted in one distillation step.
A biobased photocurable binder for composites with transparency and thermal stability from biomass-derived isosorbide
作者:Seunghan Shin、Byung-Chul Kim、Eugene Chang、Jin Ku Cho、Dong Hack Suh
DOI:10.1039/c3ra47287f
日期:——
A biobased photocurable binder was synthesized from isosorbide in a high yield (91%) and used as a binder for transparent glass fabric composites. The photocurable isosorbide binder showed a lower refractive index (n = 1.489) than that of glass (n = 1.560) and low viscosity (48.6 cP at 25 °C) owing to the wedge-shaped fused ring structure of the isosorbide moiety. Transparent glass fabric composites were prepared by refractive index matching using a cardo-type fluorene based binder (n = 1.583) as a co-binder. A glass fabric composite photocured with equal wt% of the cardo- and isosorbide-based binder showed 85% of transmittance at 550 nm by UV-visible spectroscopy. It also showed a considerably good coefficient of thermal expansion (α1 = 16.3 ppm K−1) and glass transition temperature (142 °C by DMA). As the wt% of the isosorbide-based binder increased, the network structure of the binder mixture became tight to give a higher glass transition temperature but the composite's transparency was decreased.
Composite Composition containing a Polycyclic Ether Polyol
申请人:Allnex Belgium, S.A.
公开号:EP2808361A1
公开(公告)日:2014-12-03
The present invention relates to a composite composition comprising:
I. a resin composition (I), comprising
A. at least one (meth)acrylated compound (A) prepared from:
(a) at least one polycyclic ether polyol (a),
(b) optionally, at least one linking compound (b1) and/or (b2),
(c) at least one (meth)acrylating compound (c),
B. optionally, one or more radiation curable oligomer (B),
C. optionally, one or more radiation curable monomer (C),
D. optionally, one or more photo- and/or thermal initiators (D), and
at least 1wt% of a fibrous reinforcement material (II) relative to the total weight of the resin composition (I) and the fibrous reinforcement material (II).
The present invention further relates to its preparation and uses.
本发明涉及一种复合材料组合物,包括
I. 一种树脂组合物(I),包括
A. 至少一种(甲基)丙烯酸化合物(A),由以下物质制备而成
(a) 至少一种多环醚多元醇 (a)、
(b) 可选的至少一种连接化合物 (b1) 和/或 (b2)、
(c) 至少一种 (甲基) 丙烯酸化合物 (c)、
B. 可选地,一种或多种辐射固化低聚物 (B)、
C. 可选地,一种或多种辐射固化单体 (C)、
D. 可选的一种或多种光引发剂和/或热引发剂 (D),以及
相对于树脂组合物(I)和纤维增强材料(II)的总重量,至少 1wt% 的纤维增强材料(II)。
本发明还涉及其制备和用途。