摘要:
The invention relates to polymers (P) of amides, imides, amides-imides or their derivates. The polymer (P) comprising recurring units (I) of one or more structural formula(e): -A-B-C-D- (I), wherein, A and C, identical or different from each other and from one structural formula to another, independently represent an amido group an imido group of formula or a mixture thereof; B, identical or different from one structural formula to another, is independently selected from the set consisting of C4-C50 hydrocarbon groups, C12-C50 groups, a dibenzodiazocine-containing divalent group, and a mixture thereof; D, identical or different from one structural formula to another, independently represents a dibenzodiazocine-containing divalent group. The invention also relates to a process for the preparation of said polymers. Moreover, the invention relates to polymer compositions containing said polymer, its shaped articles or shaped parts as well as applications of those polymers. On other aspect, the present invention relates to new monomers containing at least one dibenzodiazocine.
摘要:
The invention pertains to novel aromatic ether ketone polymers derived from bio-based feed-stocks, comprising recurring units of formula (Rb): wherein: —E is selected from the group consisting of: —each of R, equal to or different from each other, is selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium; —j is zero or is an integer from 1 to 4, to a process for their manufacture and to the use of the same for manufacturing shaped articles.
摘要:
A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a) complexing a magnesium alkyl composition with an ortho disubstituted hindered aromatic acid ester; (b) reacting the resulting complex with a compatible precipitation agent to form a solid component; and (c) reacting the resulting solid with a titanium(IV) compound and an electron donor compound in a suitable diluent.
摘要:
A catalyst system especially suited for polymerizing alpha-olefins in the gas-phase to polymers containing essentially no active chloride comprises (A) a titanium-containing component supported on a hydrocarbon-insoluble magnesium-containing compound in combination with an electron donor compound and (B) a co-catalyst comprising (a) at least one trialkylaluminum compound (b) an aromatic acid ester and (c) an unhindered secondary amine, optionally reacted with a dialkylaluminum hydride, in substantial absence of compounds containing an Al-Cl bond.
摘要:
An olefin polymerization catalyst system comprises a solid, hydrocarbon-insoluble, magnesium-containing, titanium-containing, electron donor-containing component; an alkyl aluminum compound; and organosilane compound selected from the group consisting of branched C.sub.3 -C.sub.10 alkyl-t-butoxydimethoxysilanes.
摘要:
An olefin polymerization catalyst system comprises a solid, hydrocarbon-insoluble, magnesium-containing, titanium-containing, electron donor-containing component; an alkyl aluminum compound; and organosilane compound selected from the group consisting of diisobutyldimethoxysilane, diisopropyldimethoxysilane, t-butyltrimethoxysilane and di-t-butyldimethoxysilane, and mixtures thereof.