brominated anionic content
Interactions of Anionic Phospholipids and
· This is consistent with binding of the brominated anionic phospholipids to the non-annular binding sites for anionic phospholipids observed in the crystallographic studies of KcsA sites at which zwitterionic phospholipids can either not bind or to which they bind with very low affinity. Quenching by brominated anionic phospholipids will then arise both from binding to the annular sites and from
Chat OnlineViscoelastic properties of anionic brominated CORE
The partition coefficient increased to ca 8 compared to negligible for potassium oleate. A gel was formed when a 20 solution of potasssium 9-bromo stearate was mixed with 8 KCl. Contacting this gel with hydrocarbon resulted in a loss of viscosity due to the improved solubility of the brominated compound in hydrocarbon.
Chat OnlineBinding of Anionic Lipids to at Least Three Nonannular
· Increasing the anionic lipid content of the membrane leads to a large increase in open channel probability from ∼2.5 in the presence of 25 mol phosphatidylglycerol to ∼62 in 100 mol phosphatidylglycerol. The relationship between open channel probability and phosphatidylglycerol content shows cooperativity.
Chat OnlineUS Patent for Low molecular weight brominated polymers
· This invention relates flame retardant compositions containing low molecular weight brominated anionic chain transfer vinyl aromatic polymers hereinafter "ACTVAP". The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures Tg that are predictive of acceptable melt flows and
Chat OnlineChemical and electrochemical grafting of polythiophene
A novel strategy for chemical and electrochemical grafting of polythiophene onto a polystyrene backbone is reported. For this purpose polystyrene was synthesized via living anionic polymerization and then brominated at the para position of the aromatic rings of the polystyrene (PSt-Br). The bromo groups of the PSt-Br were converted to thiophene groups using the Grignard reaction and a
Chat OnlineBROMINATED POLYMERS OF ALKENYL AROMATIC
1. A composition comprising a brominated anionically polymerized polymer of an alkenyl aromatic compound having a bromine content of from 1 to 68 weight percent a weight average molecular weight of at least 40 000 and an alkyl halide content of less than about 1 weight percent.
Chat OnlineFLAME-RETARDING OLIGOMERIC BROMINATED URETHANE
The described procedure will result in aqueous dispersions of anionic cationic and/or nonionic vinyl-urethane hybrid with high total solids content and low viscosity. Prophetic Example 8 Under elevated temperatures 2 mols of FR-513 are reacted with 1 mol of HDI in the presence of optional plasticizer.
Chat OnlineCalcium-induced lipid phase separations and interactions
· Evaluation using fluorescent lipid probes and brominated lipid quenchers. Biochemistry 1992 31 (13) . DOI 10.1021/bi00128a014. Michael C. Wiener and Stephen H. White. Transbilayer distribution of bromine in fluid bilayers containing a specifically brominated analog of dioleoylphosphatidylcholine.
Chat OnlineSequential double C–H functionalization of 2 5
An anionic species of 2 5-norbornadiene was generated and brominated using a flow reactor. In the second step 2-bromo-2 5-norbornadiene was lithiated with LTMP and reacted with tributyltin chloride. Finally an integrated one-flow synthesis using various electrophiles was achieved within 3
Chat OnlinePelletized Brominated Contentdomatprim
In preferred embodiments such pelletized anionic styrenic polymer is brominated anionic polystyrene having a bromine content of at least about 67 wt e.g. in the range of about 67 to about 71 wt . Also preferred are pelletized brominated anionic styrenic polymers in which the melt flow index (ASTM D ) at 220°C 2.16 kg is at least 4 g/10 min and preferably is at least 5 g/10 min.
Chat OnlineCatalytic Enantioselective Bromoaminocyclization and
· We apply a chiral anionic phase-transfer system for the catalytic asymmetric bromoaminocyclization and bromocycloetherification of momo-functional benzo-cyclic alkenes. Various brominated tricyclic benzo-heterocycles were produced with up to
Chat OnlineBromination of telomer mixtures derived from toluene and
· Bromine content of the brominated products produced from the telomers of this invention is typically determined by use of a combustion method. The procedure of this method is as follows A 0.04-0.08 g of sample of the Brominated Telomer is weighed on a 0.00001 g accuracy onto ¼ sheet of creased black filter paper on a 5 place analytical balance.
Chat OnlineAnionic clays as hosts for anchored synthesis Interlayer
· The powder XRD patterns of the brominated intercalated solids are shown in Fig. 3. The basal spacing changes from 8.0 to 11.8 Å for brominated maleate intercalated sample (Fig. 3a) and from 12.3 to 12.0 Å for brominated fumarate intercalated sample (Fig. 3b). This suggests that the dibromosuccinate species formed in both the cases have similar orientation in the interlayer regionboth standing
Chat OnlineBromination of telomer mixtures derived from toluene and
· Bromine content of the brominated products produced from the telomers of this invention is typically determined by use of a combustion method. The procedure of this method is as follows A 0.04-0.08 g of sample of the Brominated Telomer is weighed on a 0.00001 g accuracy onto ¼ sheet of creased black filter paper on a 5 place analytical balance.
Chat OnlineCalcium-induced lipid phase separations and interactions
· Evaluation using fluorescent lipid probes and brominated lipid quenchers. Biochemistry 1992 31 (13) . DOI 10.1021/bi00128a014. Michael C. Wiener and Stephen H. White. Transbilayer distribution of bromine in fluid bilayers containing a specifically brominated analog of dioleoylphosphatidylcholine.
Chat OnlineBrominated surfactants as emulsifiers and weighting agents
· Both non-ionic and anionic surfactants were brominated. By using proper amounts of the new emulsifiers—weighting agents in oil-in-water emulsions the specific gravity of the oil droplets can be equalized to that of water very stable emulsion are obtained and no creaming occurs.
Chat OnlineThe interfacial lipid binding site on the potassium
· The quenching observed in brominated anionic lipid is 25 greater than that observed in di(Br 2 C18 0)PC (Fig. 4) corresponding to a value for F/F o for Trp-67 of 0.27 compared to the value of 0.39 estimated above from the expected distance of separation between Trp-67 and the nearest fatty acyl chain of a bound nonannular lipid molecule.
Chat OnlineViscoelastic properties of anionic brominated CORE
The partition coefficient increased to ca 8 compared to negligible for potassium oleate. A gel was formed when a 20 solution of potasssium 9-bromo stearate was mixed with 8 KCl. Contacting this gel with hydrocarbon resulted in a loss of viscosity due to the improved solubility of the brominated compound in hydrocarbon.
Chat OnlineBROMINATED POLYMERS OF ALKENYL AROMATIC
1. A composition comprising a brominated anionically polymerized polymer of an alkenyl aromatic compound having a bromine content of from 1 to 68 weight percent a weight average molecular weight of at least 40 000 and an alkyl halide content of less than about 1 weight percent.
Chat OnlineBROMINATED FLAME RETARDANTBASF SE
Brominated vinylaromatic-diene block copolymers (Br-SBC) comprising a vinylaromatic polymer block S and a brominated diene polymer block BB wherein before bromination the weight-average molar mass M w of the block S is greater than or equal to M w of the block BB use thereof as flame retardants and also polymer compositions comprising these for unfoamed and foamed thermoplastic polymers
Chat OnlineThe interfacial lipid binding site on the potassium
· The quenching observed in brominated anionic lipid is 25 greater than that observed in di(Br 2 C18 0)PC (Fig. 4) corresponding to a value for F/F o for Trp-67 of 0.27 compared to the value of 0.39 estimated above from the expected distance of separation between Trp-67 and the nearest fatty acyl chain of a bound nonannular lipid molecule.
Chat OnlineUS Patent for Low molecular weight brominated polymers
· This invention relates flame retardant compositions containing low molecular weight brominated anionic chain transfer vinyl aromatic polymers hereinafter "ACTVAP". The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures Tg that are predictive of acceptable melt flows and
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