Abstract: A module having a front/rear and top/bottom orientation comprising a housing having a front and rear end; a connector at the front end of the housing for interengaging with a mating connector having purchase point; a resilient latch having a secured end secured to the housing, and a free end forward of the secured end, the free end being biased toward the housing and configured to releasibly engage the purchase point; and an actuator moveably attached to the housing, the actuator being disposed under the latch and having a contact portion which contacts the latch as the actuator is pulled rearward to urge the latch away from the housing, thereby freeing the free end from the purchase point.

Abstract: A module having a front/rear and top/bottom orientation comprising a housing having a front and rear end; a connector at the front end of the housing for interengaging with a mating connector having purchase point; a resilient latch having a secured end secured to the housing, and a free end forward of the secured end, the free end being biased toward the housing and configured to releasibly engage the purchase point; and an actuator moveably attached to the housing, the actuator being disposed under the latch and having a contact portion which contacts the latch as the actuator is pulled rearward to urge the latch away from the housing, thereby freeing the free end from the purchase point.

Abstract: A tool is described for delivering and applying a clamping implant (9; 109) via a puncture in skin tissue (3) and underlying tissue (2) of a patient, comprising a hollow needle (4; 104) bounding a lumen (5; 105) and forming a helix, a plunger (6; 106) of which a distal portion extends in longitudinal direction inside the lumen (5; 105), and a plunger operating member (7; 107) engaging a proximal portion of the plunger (6; 106) projecting from the needle (4; 104), for screwing the plunger (6; 106) further into or out of the needle (4; 104) by screwing rotation of the needle (4; 104) relative to the plunger (6; 106). A system is also described, including such a tool, and a method is also described for delivering and applying a clamping implant (9; 109) using such an instrument.

Abstract: A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I): (R1)(R2)P—X—P(R3)(R4)??(I) where X is a bivalent organic bridging group, R1 and R3 are hydrocarbyl groups, and R2 and R4 are aromatic groups; and c) a second ligand having the general formula (II): (R1?)(R2?)P—X?—P(R3?)(R4?)??(II) where X? is a bridging group containing nitrogen and R1?, R2?, R3? and R4? are hydrocarbyl groups. The present invention also relates to a catalyst system comprising the catalyst precursor composition of the present invention and a cocatalyst.

Abstract: A process for the simultaneous trimerization and tetramerization of olefinic monomers, wherein the process comprises contacting at least one olefinic monomer with a catalyst system comprising: a) a source of chromium, molybdenum or tungsten; b) a ligand having the general formula (I); (R1)2P-X-P(R1)m(R2)n??(I) wherein: X is a bridging group of the formula —N(R3)—; the R1 groups are independently selected from an optionally substituted aromatic group bearing a polar substituent on at least one of the ortho-positions; and the R2 groups are independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups with the proviso that when the group is aromatic it does not contain a polar substituent at any of the ortho-positions; and c) a cocatalyst.

Abstract: A catalyst precursor composition comprising: a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I); (R1)(R2)P—X—P(R3)(R4)??(I) wherein: X is a bridging group of the formula —N(R5)—, wherein R5 is selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; at least three of R1 to R4 are independently selected from optionally substituted aromatic groups, each bearing a polar substituent on at least one of the ortho-positions; and optionally one of R1 to R4 is independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups with the proviso that when the group is aromatic it does not contain a polar substituent at any of the ortho-positions; c) a second ligand having the general formula (II); (R1?)(R2?)P—X?—P(R3?)(R4?)??(II) wherein: X? is a bridging group as defined for X of the fi

Abstract: A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I); (R1)(R2)P—X—P(R3)(R4) ??(I) wherein X is a bivalent organic bridging group; R1 and R3 are independently selected from, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups, with the proviso that when R1 and R3 are aromatic groups they do not contain a polar substituent at any of the ortho-positions; R2 and R4 are independently selected from optionally substituted aromatic groups, each R2 and R4 bearing a polar substituent on at least one of the ortho-positions; and c) a second ligand having the general formula (II); (R1?)(R2?)P—X?—P(R3?)(R4?) ??(II) wherein X? is a bridging group of the formula —N(R5?)—, wherein R5? is selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; and R1?, R2?, R3? and R

Abstract: A transition metal complex which is a bis-arylimine pyridine MXn complex or a [bis-arylimine pyridine MXp+][NC?]q complex comprising a bis-arylimine pyridine ligand and M is a transition metal atom; n matches the formal oxidation state of the transition metal atom M; X is halide, optionally substituted hydrocarbyl, alkoxide, amide, or hydride; NC? is a non-coordinating anion; and p+q matches the formal oxidation state of the transition metal atom M. The transition metal complexes of the present invention, their complexes with non-coordinating anions and catalyst systems containing such complexes have good solubility in non-polar media and chemically inert non-polar solvents especially aromatic hydrocarbon solvents. The catalyst systems can be used for a wide range of (co-)oligomerization, polymerization and dimerization reactions.

Abstract: A process for the production of alpha-olefins comprising reacting ethylene under oligomerization conditions in the presence of a mixture comprising: (a) a metal salt based on Fe(II), Fe(III), Co(II) or Co(III); (b) a pyridine bis-imine ligand; and (c) a co-catalyst which is the reaction product of water with one or more organometallic aluminium compounds, wherein the one or more organometallic aluminium compounds is selected from: (i) ??-branched compounds of formula (I): Al(CH2—CR1R2—CH2—CR4R5R6)xR3yHz; (ii) ??-branched compounds of formula (II) Al(CH2—CR1R2—CR4R5R6)xR3yHz and mixtures thereof; wherein when the metal salt and the bis-arylimine pyridine ligand are mixed together they are soluble in aliphatic or aromatic hydrocarbon solvent.