telomerization of CO2 and butadiene. The key for the selective valorization of 1 is the use of a catalytic system based on PdCl2, a chelating phosphine bearing electron-withdrawing groups and an acidic promoter. The unsaturated C10 methyl diester can be easily hydrogenated on Pd/C under mild conditions to afford its corresponding saturated diester. Subsequent hydrogenation using the homogeneous [Ru(acac)3]/Triphos
SYNTHESIS OF BUILDING BLOCKS AND FEEDSTOCKS FOR MANUFACTURING RENEWABLE POLYMERS
申请人:Qatar Foundation for Education, Science and Community Development
公开号:US20210292266A1
公开(公告)日:2021-09-23
Disclosed are methods or processes of synthesizing building blocks and feedstocks for producing a broader range of polymers, including renewable polymers, from renewable resources such as CO
2
. In a process of manufacturing a renewable feedstock for polymer production, a CO
2
derived lactone is prepared and processed to form the renewable feedstock. The process may include alkoxycarbonylation of the CO
2
derived lactone to form a diester and hydrogenation of the diester.
A process for producing a polymer or copolymer of an alpha-olefin comprises continuously polymerizing or copolymerizing the alpha-olefin or the alpha-olefin with up to 5 mole% of a diolefin in the presence of a catalyst composed of (A) a solid magnesium compound obtained by reacting (i) an adduct formed between a magnesium halide and an electron donor with (ii) an organometallic compound of a metal of Groups I to III of Mendelejeff's periodic table, (B) a liquid transition metal compound. and (C) an organoaluminum compound, while feeding the compound (B) separately from the other compounds (A) and (C) into a polymerization or copolymerization zone.
By means of this process it is possible to produce a polymer or copolymer of narrow molecular weight distribution, while yet avoiding the requirement of known processes of supporting a transition metal compound on a magnesium-containing carrier before carrying out a polymerization or copolymerization reaction
一种生产α-烯烃聚合物或共聚物的工艺,包括在催化剂存在下,连续聚合或共聚 α-烯烃或α-烯烃与不超过 5 摩尔%的二烯烃,催化剂由以下部分组成:(A) 固态镁化合物,该固态镁化合物是由(i)卤化镁和电子供体之间形成的加合物与(ii)门捷列夫周期表第 I 至 III 族金属的有机金属化合物反应而得,(B)液态过渡金属化合物,以及(C)有机铝化合物,同时将化合物(B)与其他化合物(A)和(C)分别送入聚合或共聚区。和 (C) 一种有机铝化合物,同时将化合物 (B) 与其他化合物 (A) 和 (C) 分开送入聚合或共聚区。
通过这种工艺,可以生产出分子量分布较窄的聚合物或共聚物,同时又避免了已知工艺中 在进行聚合或共聚反应之前将过渡金属化合物支撑在含镁载体上的要求。
RESIN COMPOSITION, SHEET OBTAINED THEREFROM, PROCESS FOR PRODUCING SHEET, AND FORMED OBJECT
申请人:Toyo Ink Manufacturing Co. Ltd.
公开号:EP1375547A1
公开(公告)日:2004-01-02
The present invention provides a resin composition comprising a vinyl polymer (A) having, at a side chain thereof, at least one structure selected from polyether, polyester, polycarbonate or polybutadiene which has a functional group that can react with an isocyanate group, and a polyisocyanate compound (B) having at least two isocyanate groups; a sheet made of a hardened body of the resin composition; a shaped body formed by shaping the sheet; and a sheet producing process comprising the steps of applying the resin composition and then hardening the resultant layer.
Resin composition for flexographic printing plate, laser-engraving type flexographic printing plate precursor and process for producing same, and flexographic printing plate and process for making same
申请人:Fujifilm Corporation
公开号:EP2617773A1
公开(公告)日:2013-07-24
Disclosed is a resin composition for a flexographic printing plate, comprising (Component A) a binder resin and (Component B) a compound represented by Formula (1) and/or Formula (2), Component B being contained at 1 to 50 parts by mass relative to 100 parts by mass of Component A,
wherein in Formulae (1) and (2) R1 and R4 independently denote a hydrogen atom or a methyl group, R2 and R5 independently denote a divalent organic group having 1 to 20 carbons, and R3 and R6 independently denote a monovalent organic group having 1 to 20 carbons, R3 and R6 not comprising an ethylenically unsaturated group, a dialkoxysilyl group, or a trialkoxysilyl group.