The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. V.—Benzyl phenyl sulphides (non-halogen substituents)
作者:R. F. Brookes、J. E. Cranham、D. Greenwood、H. A. Stevenson
DOI:10.1002/jsfa.2740090303
日期:1958.3
A number of benzylphenylsulphides, containing only non-halogen nuclear substituents, and some of the corresponding sulphones, are characterized. The activities against the eggs and young mites of the glasshouseredspider (Tetranychus telarius L.) are tabulated and discussed.
表征了许多仅包含非卤素核取代基的苄基苯基硫化物和一些相应的砜。对温室红蜘蛛 (Tetranychus telarius L.) 的卵和幼螨的活性进行了列表和讨论。
BLOCK POLYMER HAVING FUNCTIONAL GROUPS AT BOTH ENDS
申请人:Kataoka, Kazunori
公开号:EP0844269A1
公开(公告)日:1998-05-27
The present invention provides a block polymer which has functional groups on its both ends, and which comprises hydrophilic/hydrophobic segments. As for the functional groups on its both ends, the block polymer has amino group, carboxyl group or mercapto group on α-terminal, and hydroxyl group, carboxyl group, aldehyde group or vinyl group on ω-terminal. Hydrophilic segment comprises polyethylene oxide, while hydrophobic segment is derived from lactide, lactone or (meth)acrylic acid ester. The block polymer of this invention forms a polymeric micelle which is usable as bio-compatible materials.
Functionalized highly syndiotactic polystyrene and preparation method thereof
申请人:Changchun Institute of Applied Chemistry Chinese Academy of Sciences
公开号:US10246536B2
公开(公告)日:2019-04-02
Compared to the prior art, this invention provides a functionalized highly syndiotactic polystyrene, comprising a repeating unit having a structure represented by formula (I), or comprising a repeating unit having a structure represented by formula (I) and a repeating unit having a structure represented by formula (II). It is indicated by the experimental results that the syndiotacticity selectivity of the highly syndiotactic polymer provided by this invention is no less than 90%, and the proportion of the repeating unit having a structure represented by formula (I) in the polymer may be arbitrarily adjusted and may be up to 100%. Meanwhile, the oxygen- or sulfur-containing groups in the polymer may increase the polarity of the highly syndiotactic polystyrene so as to increase the blendability of the highly syndiotactic polystyrene with other polymers.