Abstract:
The invention relates to a polymer composition containing at component that contains at least one polyisobutene based on one middle molecular weight polyisobutene and at least another polymer different therefrom.
Abstract:
A polymer composition comprises at least one polyisobutene-containing component based on a medium molecular weight, reactive polyisobutene and at least one further polymer which is different therefrom.
Abstract:
A polymer composition comprises at least one polyisobutene-containing component based on a medium molecular weight, reactive polyisobutene and at least one further polymer which is different therefrom.
Abstract:
PCT No. PCT/EP96/01973 Sec. 371 Date Nov. 6, 1997 Sec. 102(e) Date Nov. 6, 1997 PCT Filed May 9, 1996 PCT Pub. No. WO96/37523 PCT Pub. Date Nov. 28, 1996Polymers are obtainable by polymerizing olefinically unsaturated monomers in the presence of a catalyst system which comprises as active constituents a) a salt of a metal of group VIII B of the Periodic Table of the Elements, b) one or more compounds selected from the group consisting of protic acids and Lewis acids, c) a chelating compound of the formula (I)R1R2E1-Z-E2R3R4(I)where the substituents and indices have the following meanings: E1, E2 are each an element from group VA of the Periodic Table of the Elements, Z is a bridging structural unit comprising one, two or three substructural units of elements of groups IVA, VA and VIA of the Periodic Table of the Elements, R1 to R4 are substituents selected from the group consisting of C1-C20-organic and C3-C30-organosilicon radicals, where the radicals may contain one or more elements of groups IVA, VA, VIA and VIIA of the Periodic Table of the Elements.
Abstract:
A polymer composition comprises at least one polyisobutene-containing component based on a medium molecular weight, reactive polyisobutene and at least one further polymer which is different therefrom.
Abstract:
Low molecular weight and high molecular weight two-block emulsifiers, in particular based on polyisobutylene, of the formula (Ia) or (Ib) and mixtures thereof where L is a polyisobutylenyl group having a number average molecular weight Mn of from 300 to 1 000 and L is a polyisobutylenyl group having a number average molecular weight Mn of from 2 000 to 20 000, -A- is -O-, -N(H) or -N(R )-, M is H or an alkali metal ion, 0.5 alkaline earth metal ion or NH4 , where one or more H in NH4 may be replaced by alkyl, R is a linear or branched saturated hydrocarbon radical which carries at least one substituent selected from the group consisting of OH, NH2 and NH3 and, if required, one or more C(O)H groups and, if required, contains one or more nonneighboring -O- and/or secondary amines and/or tertiary amines, where one or more H in the NH2- or NH3 groups may be replaced by alkyl, and R is a linear or branched saturated hydrocarbon radical which, if required, carries one or more substituents selected from the group consisting of OH, NH2, NH3 and C(O)H and, if required, contains one or more nonneighboring -O- and/or secondary amines and/or tertiary amines, and where one or more H in the NH2- or NH3 groups may be replaced by alkyl, and the proportion of A-R in the compound of the formula (Ia) or (Ib) is at least 20% by weight, are described.
Abstract:
The invention relates to low-molecular and high-molecular diblock emulsifier s, particularly based on polyisobutylene, of general formulas (Ia) and (Ib), an d to mixtures thereof, whereby: La represents a polyisobutylene group having a numerical average molecular weight Mn ranging from 300 to 1000; Lb represent s a polyisobutylene group having a numerical average molecular weight Mn rangi ng from 2000 to 20000; -A- represents -O-, -N(H)- or N(R1)-; M+ represents H+, an alkali metal ion, 0.5 alkaline-earth metal ions or NH4+, whereby in NH4+, on e or more H's can be substituted by alkyl radicals; R represents a linear or branched saturated hydrocarbon radical, which supports at least one substituent selected from the group consisting of OH, NH2 or NH3+ and optionally supports one or more C(O)H groups while optionally containing one or more non-adjacent -O- and/or secondary amines and/or tertiary amines and, in the NH2 or NH3+ groups, one or more H's can be substituted by alkyl radicals, and; R1 represents a linear or branched saturated hydrocarbon radical, which optionally supports one or more substituents selected from th e group consisting of OH, NH2, NH3+ or C(O)H while optionally containing one o r more non-adjacent -O- and/or secondary amines and/or tertiary amines and, in the NH2 or NH3+ groups, one or more H's can be substituted by alkyl radicals , and the proportion of A-R on the compound of general formula (Ib) equals at least 20 wt. %.
Abstract:
A catalyst solution for polymerizing alpha-olefins is obtainable by reacting a metallocene compound with an activator compound which can react with the metallocene compound so as to displace a ligand from the central atom and stabilize the resulting cationic complex by a non-coordinating anion as an ion pair, adding one or more alpha-olefins in a molar ratio of metallocene compound: alpha-olefins of from 1:1 und 1:100 and mixing with at least 10 parts by volume of an aliphatic hydrocarbon.