摘要:
Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization of unsaturated compounds. They are particularly suitable for photocuring of pigmented systems.
摘要:
The invention relates to compositions comprising a lubricant or a hydraulic fluid and at least one compound of the general formula ##STR1## wherein n is 2, 3 or 4, X is --S--, --O--, --O--CO-- or --CH.sub.2 --, R.sup.1 is C.sub.1 -C.sub.22 alkyl, C.sub.5 -C.sub.6 cycloalkyl or phenyl, and R.sup.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.4 alkyl which is substituted by an --OH group, or a group of the formula --CH.sub.2 --CH(OH)--CH.sub.2 --X--R.sup.1, wherein X and R.sup.1 have the given meanings, and to novel compounds of the formula indicated above. The glucamine derivatives of formula I are especially suitable for use as antiwear agents and as extreme pressure additives for mineral and synthetic lubricant oils and hydraulic fluids, and also as amphipolar ligands for imparting lipophilic properties to intrinsically hydrophilic metal salts, metal oxides, metal hydroxides and to protic acids. The complex compounds so obtained of the formulaM.sub.n.sup.m.X.sub.m.sup.n.pY.qZ,wherein M is a cation of valency m or a proton, X is an anion of valency n, Z is a compound of formula I, Y is water or a neutral organic molecule, p is a value from 0 to 2, q is a value from 1 to 8, m is an integer from 1 to 6 and n is an integer from 1 to 4, are also disclosed.
摘要:
The invention relates to compositions comprising a lubricant or a hydraulic fluid and at least one compound of the general formula ##STR1## wherein n is 2, 3 or 4, X is --S--, --O--, --O--CO-- or --CH.sub.2 --, R.sup.1 is C.sub.1 -C.sub.22 alkyl, C.sub.5 -C.sub.6 cycloalkyl or phenyl, and R.sup.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.4 alkyl which is substituted by an --OH group, or a group of the formula --CH.sub.2 --CH(OH)--CH.sub.2 --X--R.sup.1, wherein X and R.sup.1 have the given meanings, and to novel compounds of the formula indicated above. The glucamine derivatives of formula I are especially suitable for use as antiwear agents and as extreme pressure additives for mineral and synthetic lubricant oils and hydraulic fluids, and also as amphipolar ligands for imparting lipophilic properties to intrinsically hydrophilic metal salts, metal oxides, metal hydroxides and to protic acids. The complex compounds so obtained of the formulaM.sub.n.sup.m.X.sub.m.sup.n.pY.qZ,wherein M is a cation of valency m or a proton, X is an anion of valency n, Z is a compound of formula I, Y is water or a neutral organic molecule, p is a value from 0 to 2, q is a value from 1 to 8, m is an integer from 1 to 6 and n is an integer from 1 to 4, are also disclosed.
摘要:
Novel quaternary oxalkylated polyesters prepared from oxalkylated fatty amines by polycondensation with a dicarboxylic acid and subsequent reaction with an alkylene oxide and a carboxylic acid or a mineral acid or with a quaternizing agent such as methyl chloride, are described. The compounds are suitable for use as cosmetic active compounds, in particular for cosmetic care of the hair.
摘要:
A complex of a therapeutic agent is disclosed in which the therapeutic agent is complexed to an ammonium ion selected from the group consisting of ##STR1## where R.sup.1 and R.sup.2 are the same or different and are alkyl or hydroxy substituted alkyl containing 1 to 6 carbon atoms; andR, R' and R" are the same or different and are saturated or unsaturated aliphatics containing at least 10 carbon atoms, ##STR2## where R.sup.1, R.sup.2 and R" are as defined above, ##STR3## where R.sup.3 is independently alkyl or hydroxy substituted alkyl containing at least 10 carbon atoms; and R.sup.1, R.sup.2, R.sup.3 and R and R' have the meanings given above; and ##STR4## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given above. The therapeutic agent is heparin, a biologically active peptide or protein or an antineoplastic drug. The therapeutic agent may also be covalently bonded to a triglyceride type backbone to form a compound. The compound thus formed has a structural formula selected from the group consisting of ##STR5## where R and R' are the same or different and are saturated or unsaturated aliphatic containing at least 10 carbon atoms; and ##STR6##
摘要:
Half-ester compounds obtained by reacting polycarboxylic acid anhydrides with aliphatic tertiary amino alcohols have excellent latent characteristics as a curing catalyst for epoxy resins which are normally catalyzed by tertiary amines. When epoxy resin compositions containing the half-ester compounds are applied to semiconductor devices, remarkably small leakage currents of the devices are observed.
摘要:
The present disclosure describes compositions, preparations, nanoparticles (such as lipid nanoparticles), and/or nanomaterials and methods of their use.
摘要:
The disclosure provides ionizable amine lipids and salts thereof (e.g., pharmaceutically acceptable salts thereof) useful for the delivery of biologically active agents, for example delivering biologically active agents to cells to prepare engineered cells. The ionizable amine lipids disclosed herein are useful as ionizable lipids in the formulation of lipid nanoparticle-based compositions.
摘要:
Amines and amine derivatives that improve the buffering range, and/or reduce the chelation and other negative interactions of the buffer and the system to be buffered. The reaction of amines or polyamines with various molecules to form polyamines with differing pKa's will extend the buffering range, derivatives that result in polyamines that have the same pKa yields a greater buffering capacity. Derivatives that result in zwitterionic buffers improve yield by allowing a greater range of stability.