摘要:
The object of the present invention is to provide such a polyolefin that only the terminal of polypropylene or ethylene-propylene random copolymer is modified with a (meth)acrylic derivative unit to give a substantially monodipersed system. The feature thereof consists in such a polyolefin that the terminal of polypropylene or ethylene-propylene random copolymer obtained by living polymerization is modified with a (meth)acrylic derivative unit. As the (meth)acrylic derivative, there are used vinyl methacrylate, allyl methacrylate, trimethylsiloxyethyl methacrylate, 2-trimethylsiloxypropyl methacrylate, N, N-dimethylaminoethyl methacrylate, N,N-diethylaminoethyl methacrylate, glycidyl methacrylate, acrylic acid chloride and like.
摘要:
Polymers of 1,4-pentadiene having an Mw/Mn of 1.05 to 1.4 are produced by polymerizing 1,4-pentadiene in the presence of catalyst comprising a vanadium chelate compound and an organoaluminum compound.
摘要:
Polymers of olefins such as ethylene and propylene, having functional groups introduced into both the ends thereof, can be provided which are useful as macromonomers for polycondensation. This new polymer comprises a recurring unit represented by the general formula --(--CH.sub.2.CHR--)-- and having functional groups bonded to both the ends of the polymer and a number average molecular weight of 300 to 500,000, the functional groups being selected from the group consisting of H.sub.2 C.dbd.CH-- group and ##STR1## wherein X is --OH, --OR.sup.1, a halogen atom or --SO.sub.3 R.sup.2, R.sup.1 is a hydrocarbon group of 1 to 5 carbon atoms and R.sup.2 is a halogen-substituted or non-substituted hydrocarbon group of 1 to 20 carbon atoms.
摘要:
A TFT LCD and the method of making the same are provided to prevent short circuits occurred between metal lines and transparent pixel electrodes. An insulating layer is provided to overlay the entire metal layer except the intersection areas for forming contact windows. Then, the transparent conductive layer is provided to form pixel electrodes and interconnection lines. Thus, even transparent conductive layer is not etched clearly and forming residuals, the residuals will not cause short circuits between the metal lines and transparent pixel electrodes. Eventually, the production yield rate can be increased. Moreover, a second metal layer is deposed under the transparent conductive layer to reduce the resistance of the interconnection lines.
摘要:
An ethylene polymer which Is capable of being degraded by microorganisms is provided which comprises a recurring unit represented by the general formula ##STR1## in which R is a divalent hydrocarbon group containing 2 to 20 carbon atoms, R' is a divalent hydrocarbon group containing 1 to 20 carbon atoms and A is a polyethylene segment comprising a recurring unit represented by the formula --CH.sub.2.CH.sub.2 -- and having a number average molecular weight (Mn) of 300 to 300,000, and the ethylene polymer having a number average molecular weight (Mn) of 500 to 5,000,000.