摘要:
A radar detector for exploration of subsurface embedded objects comprising an antenna array (1) for high-frequency electromagnetic waves, which is connected and individually switchable with at least one transmit/receive unit, a time-controlled signal processor, an evaluation device for SAR and a display device. The antenna array (1) exhibiting at least three antennas (sx, rx, sy, ry) scanning an area by their positioning.
摘要:
The present invention provides a method for varying the melting points and molecular weights of polyolefins by changing the structure of the catalyst used in the polymerization. The catalysts that are useful in the present invention are chiral, stereorigid metallocene catalyst of the formula R″(C5R′m)2MeQ. The catalysts include a bridge structure between the (C5R′m) groups and may contain substituents on the groups. It has been discovered that the melting points and molecular weights of the polymers produced by such catalysts are influenced by the bridge and substituents added to the (C5R′m) groups. Thus, the present invention provides a method for varying the melting points of the polymer product and a method of varying the molecular weights of the product by changing the components and structure of the metallocene catalysts. The present invention also provides a process for polymerizing olefins in which the melting points and/or molecular weights of the product may be controlled. Also included in the invention is the discovery that the melting points of the products are controlled by the number of inversions in the xylene insoluble fraction of the polymer.
摘要:
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using the catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR″iZjjMeQkPl wherein Y is a coordinating group containing a six π electron central radical directly coordinating Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R″ is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i is 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
摘要翻译:公开了一类新的杂环金属茂,含有它们的催化体系和使用催化体系聚合加成聚合单体的方法; 所述杂环金属茂对应于式(I):Y Z i R Z Z 其中Y是包含直接配位Me的六个π电子中心基团的配位基团,其中与一个或多个选自B,N,O,Al的至少一个非碳原子相连; ,Si,P,S,Ga,Ge,As,Se,In,Sn,Sb和Te; R“是Y和Z基团之间的二价桥; Z是一个协调组,任选地等于Y; 我是过渡金属; Q是卤素或烃取代基; P是一个抗衡离子; 我是0或1; j为1-3; jj是0-2; k为1-3; 和l是0-2。
摘要:
The present invention relates to organometallic transition metal compounds of the formula (I) Z1AnZ2MXm (I) where Z1 is a coordinating group which comprises a six-π-electron central group which coordinates directly to M, A is a divalent bridge between the groups Z1 and Z2, Z2 is a coordinating group having the same meaning as Z1 or is a group comprising an open pentadienyl, a cyclopentadienyl-containing group or a heterocyclic, 5- or 6-membered group containing six π electrons, n=zero or 1, M is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements, the radicals X are identical or different and are each an organic or inorganic radical, m is 0, 1 or 2, and at least one of the three molecule fragments Z1, Z2 and A bears a monovalent organic radical.
摘要翻译:本发明涉及式(I)Z1AnZ2MXm(I)的有机金属过渡金属化合物,其中Z1是包括与M直接配位的六元电子中心基团的配位基团,A是组之间的二价桥接 Z 1和Z 2中,Z 2是具有与Z1相同含义的配位基团,或者是包含开式戊二烯基,含环戊二烯基的基团或杂环基,含有6个碳原子的5或6元基团; 电子,n = 0或1,M是元素周期表第3,4,5或6族的元素,基团X相同或不同,各自为有机或无机基团,m为0,1 或2,并且三个分子片段Z1,Z2和A中的至少一个具有一价有机基团。
摘要:
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using the catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR″iZjjMeQkPl wherein Y is a coordinating group containing a six π electron central radical directly coordinating Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R″ is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i is 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
摘要:
The present invention relates to organometallic transition metal compounds of the formula (I) M1 is a metal of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanicles, X are identical or different and are each an organic or inorganic radical, where two radicals X can also be joined to one another, n is a natural number from 1 to 4, T1, T2 are identical or different and are each a divalent group selected from the group consisting of —O—, —S—, —Se—, —Te—, —N(R13)_′—P(R13)—, —As(R13)—, Sb(R13)—, —Si(R13)2-, —C(R13 R14)—C(R13 R15)— and —C(R14)═C(R15)—, where R13, R14 and R15 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R1, R7 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2 R8 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 R9 are identical or different and are each halogen or an organic radical having from 1 to 40 carbon atoms, where R3 is not methyl when T1 is —C(H)═C(H)—, R4, R5 R6, R10, R11 and R12 are identical or different and are each hydrogen, halogen or an organic radical having from 1 to 40 carbon atoms, or two adjacent radicals R4 , R5, R6, R10, R11 and R12 together with the atoms connecting them form a monocyclic or polycyclic, substituted or unsubstituted ring system which has from 1 to 40 carbon atoms and may also contain heteroatoms selected from the group consisting of the elements O, S, Se, Te, N, P, As, Sb and Si, or, if T1 or T2 is —O—, —S—, —Se— or —Te—, the radical R3 together with R4 and/or the radical R9 together with R10 forms a monocyclic or polycyclic, substituted or unsubstituted ring system which has from 1 to 40 carbon atoms and may also contain heteroatoms selected from the group consisting of the elements O, S, Se, Te, N, P, As, Sb and Si, and A is a bridge consisting of a divalent atom or a divalent group, biscyclopentadienyl ligand systems having such a substitution pattern, catalyst systems comprising at least one of the organometallic transition metal compounds of the present invention, a process for preparing polyolefins by polymerization or copolymerization of at least one olefin in the presence of one of the catalyst systems of the present invention and the polyolefins obtainable in this way, the use of the biscyclopentaclienyl ligand systems of the present invention for preparing organometallic transition metal compounds and a process for preparing organometallic transition metal compounds using the biscyclopentaclienyl ligand systems.
摘要:
The present invention relates to organometallic transition metal compounds of the formula (I) Z1AnZ2MXm (I) where Z1 is a coordinating group which comprises a six-π-electron central group which coordinates directly to M, A is a divalent bridge between the groups Z1 and Z2, Z2 is a coordinating group having the same meaning as Z1 or is a group comprising an open pentadienyl, a cyclopentadienyl-containing group or a heterocyclic, 5- or 6-membered group containing six π electrons, n=zero or 1, M is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements, the radicals X are identical or different and are each an organic or inorganic radical, m is 0, 1 or 2, and at least one of the three molecule fragments Z1, Z2 and A bears a monovalent organic radical.
摘要:
The present invention relates to catalyst systems for preparing isotactic polyolefins obtainable by reacting at least one chiral transition metal compound and at least one cocatalyst which is able to convert the chiral transition metal compound into a cation, where the chiral transition metal compound contains two bidentate chelating ligands connected to one another via a bridge and, if desired, one or two further monodentate ligands, with the four coordinating atoms of the two chelating ligands being in an approximately planar arrangement around the transition metal ion and up to two further ligands being located above and below this approximately planar coordination sphere formed by the four coordinating atoms of the two chelating ligands and, in the case of two such further ligands, these being in the trans position relative to one another, to the use of the catalyst systems of the present invention for preparing polyolefins, to a process for preparing polyolefins by polymerization or copolymerization of at least one olefin in the presence of one of the catalyst systems of the present invention, to the use of chiral transition metal compounds for preparing a catalyst system for the polymerization of olefins, to chiral transition metal compounds, to a process for preparing a catalyst system for olefin polymerization, to a process for preparing isotactic polyolefins, to polyolefins obtainable by a process according to the present invention, to polyolefin compositions comprising the polyolefins of the present invention and to products produced from such polyolefin compositions.
摘要:
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using said catalytic system are disclosed; the heterocyclic metallocenes correspond to the formula (I): YjR″iZjjMeQkPl wherein Y is a coordinating group containing a six π electron central radical directly coordinatng Me, to which are associated one or more radicals containing at least one non-carbon atom selected from B, N, O, Al, Si, P, S, Ga, Ge, As, Se, In, Sn, Sb and Te; R″ is a divalent bridge between the Y and Z groups; Z is a coordinating group, optionally being equal to Y; Me is a transition metal; Q is halogen or hydrocarbon substituents; P is a counterion; i os 0 or 1; j is 1-3; jj is 0-2; k is 1-3; and l is 0-2.
摘要翻译:公开了一类新的杂环金属茂,含有它们的催化体系和使用所述催化体系聚合加成聚合单体的方法; 所述杂环金属茂对应于式(I):Y Z i R Z Z 其中Y是含有直接配位于Me的六个π电子中心基团的配位基团,其中与一个或多个选自B,N,O,Al的至少一个非碳原子相连; ,Si,P,S,Ga,Ge,As,Se,In,Sn,Sb和Te; R“是Y和Z基团之间的二价桥; Z是一个协调组,任选地等于Y; 我是过渡金属; Q是卤素或烃取代基; P是一个抗衡离子; 我os 0或1; j为1-3; jj是0-2; k为1-3; 和l是0-2。