摘要:
A highly electroconductive carbonaceous material is obtained by pyrolysis in an inert atmospherea conjugated polymer represented by the general formula--R--CH.dbd.CH).sub.n wherein R is an aromatic hydrocarbon group which forms a consecutive carbon to carbon conjugated system with the vinylene group, and n is an integer of at least 2, at a temperature above 400.degree. C., or an aromatic polyimide at a temperature of 2000.degree. C. or above. Further, a highly electroconductive composition is obtained by treating the carbonaceous material mentioned above with a dopant.
摘要:
A high strength and modulus conjugated polymer film which comprises as its principal constitutive unit a conjugated polymer structure represented by the general formula:--R--CH.dbd.CH.sub.nwherein R is an aromatic hydrocarbon group having 6 to 20 carbon atoms which forms a consecutive carbon to carbon conjugated system with vinylene group, and n is an integer of 5 to 50,000, and has a tensile strength of 15 kg/mm.sup.2 or more and an elastic modulus of 350 kg/mm.sup.2 or more, and a highly electroconductive pyrolyzed product thereof.
摘要翻译:一种高强度和模量的共轭聚合物膜,其包含作为其主要构成单元的由以下通式表示的共轭聚合物结构:-R-CH = CH n,其中R是具有6至20个碳原子的芳族烃基,其形成连续的碳 碳共轭体系和亚乙烯基,n为5〜50,000的整数,拉伸强度为15kg / mm 2以上,弹性模量为350kg / mm 2以上,高导电性热解产物。
摘要:
A high strength and modulus conjugated polymer film which comprises as itsrincipal constitutive unit a conjugated polymer structure represented by the general formula:--R--CH.dbd.CH).sub.nwherein R is an aromatic hydrocarbon group having 6 to 20 carbon atoms which forms a consecutive carbon to carbon conjugated system with vinylene group, and n is an integer of 5 to 50,000, and has a tensile strength of 15 kg/mm.sup.2 or more and an elastic modulus of 350 kg/mm.sup.2 or more, and a highly electroconductive pyrolyzed product thereof.
摘要翻译:一种高强度和模量共轭聚合物膜,其包含作为其主要构成单元的由以下通式表示的共轭聚合物结构:-R-CH = CH)n,其中R是具有6至20个碳原子的芳族烃基,其形成连续的 具有亚乙烯基的碳 - 碳共轭体系,n为5〜50,000的整数,拉伸强度为15kg / mm 2以上,弹性模量为350kg / mm 2以上,高导电性热分解产物为 。
摘要:
A highly electroconductive conjugated polymer composition which comprises a polymer having as the principal constitutive unit thereof a conjugated polymer structure --R.sub.1 --CH.dbd.CH).sub.m, wherein m is an integer satisfying the equation 2.ltoreq.m.ltoreq.n, obtained by subjecting to elimination of sulfonium salt from the polyelectrolyte of sulfonium salt having the general formula ##STR1## wherein R.sub.1 represents a group which forms a consecutive carbon to carbon conjugated system together with the adjacent vinylene group formed by the dehydrogenation of the group >CH--CH.sub.2 --; R.sub.2 and R.sub.3 each represent a hydrocarbon radical having 1 to 20 carbon atoms; X represents a counter ion; and n represents an integer larger than 2, and a dopant.
摘要:
A poly(hetero-arylene vinylene) containing, as its major constituent unit, a repeating unit represented by the general formula ##STR1## (wherein X is a sulfur or oxygen atom), which is obtained by subjecting a sulfonium salt represented by the general formula ##STR2## (wherein X has the same definition as given above, R.sub.1 and R.sub.2 are independently a hydrocarbon group of 1 to 10 carbon atoms, and A.sup.- is a counter ion) to condensation polymerization using an alkali to obtain a precursor polymer, and subjecting the precursor polymer to stretching and orientation and then to a treatment for sulfonium salt elimination or subjecting the precursor polymer in one step to stretching and orientation and to a treatment for sulfonium salt elimination, as well as a highly conductive composition thereof.
摘要:
A process for producing a stretched molded article of a conjugated polymer,hich comprises subjecting a polymer precursor having a repeating unit represented by the general formula (I) ##STR1## (wherein R.sub.1 is a group which forms a C--C conjugated system together with a vinylene group which is formed upon the dehydrogenation of the >CH--Ch.sub.2 -- group; and R.sub.2 is a group which is to be eliminated from the alpha-position carbon of the >CH--CH.sub.2 -- group simultaneously with the elimination of one of the hydrogen atoms bonding to the beta-position carbon of the >CH--Ch.sub.2 -- group) to stretching in the swelling state and then subjecting the stretched precursor polymer to elimination of the R.sub.2 group, and a conductive composition of the stretched molded article of the conjugated polymer, comprising the comjugated polymer and a dopant as essential components.
摘要:
Highly dielectric organic compounds can be obtained by cyanoethylating a dihydroxyalkylate of a water-soluble polysaccharide or a derivative thereof with acrylonitrile.
摘要:
A process for improving the performances of semipermeable membranes which comprise an acrylonitrile polymer containing 40 to 100% by mole of acrylonitrile and have a bubble point of more than 0.1 kg/cm.sup.2, by dipping said membranes in an aqueous solution containing inorganic salts and/or protic acids.
摘要翻译:通过将所述膜浸渍在含有无机盐和/或其中的无机盐的水溶液中,提高包含含有40-100%(摩尔)丙烯腈并且具有大于0.1kg / cm 2的泡点的丙烯腈聚合物的半透膜性能的方法 质子酸。
摘要:
A method for the preparation of semipermeable membrane which comprises exposing porous shaped articles of polysulfone to a plasma.The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.
摘要:
There are provided a thermoplastic graft copolymer comprising, as main chain, a polymer having a glass transition temperature of 10.degree. C. or below and, as side chain, an aromatic oligomer having a flow temperature of 100.degree. C. or above; and its preparation process, especially a process wherein an aromatic oligomer containing 50% or more of the structural units represented by the following formula (I): ##STR1## wherein X is O or S; and Ar is ##STR2## wherein R.sup.1 and R.sup.2 are alkyl group of 1-3 carbon atoms or phenyl group, and p and q are an integer of 0-2.The graft copolymer of this invention can be used as a thermal resistant plastic elastomer for heat-resisting hoses, seals, automobile materials, etc.