摘要:
An aqueous finishing composition includes at least one polyglycerol, at least one organic polycarboxylic acid containing at least three carboxyl groups, at least one esterification catalyst, at least one plasticizer, and at least one thickener selected from a group consisting of cellulose derivatives, succinoglycans and xanthans.
摘要:
The present invention relates to the use of polyglycerol partial esters as defoamers, in particular in coating and paint applications, to defoamers comprising polyglycerol partial esters, and to corresponding polyglycerol partial esters.
摘要:
An antimicrobial composition for the treatment of drug-resistant pathogens is provided. The composition includes antimicrobial compounds and chelating agents assemblies that are particularly effective in inhibiting drug-resistant bacteria and biofilm growth. Optionally, the composition may include an efflux pump inhibitor, further enhancing activity against resistant bacteria. Also provided are methods of treating diseases and surfaces of materials treated with the composition.
摘要:
Disclosed is a fluorinated polymer of the formula: R—S—P, wherein R is a fluorocarbyl group, S is sulfur, and P is: (i) polyglycerol; (ii) poly(allyl glycidyl ether); (iii) a copolymer of glycidol and allyl glycidyl ether, the copolymer having one or more allyl groups; or (iv) poly(allyl glycidyl ether) or copolymer of glycidol and allyl glycidyl ether, wherein one more of the allyl groups have been replaced with a functional group as described herein. Also disclosed is a method of preparing the fluorinated polymer. The fluorinated polymer finds use in improving the hydrophilicity of porous hydrophobic membranes such as PTFE and PVDF.
摘要:
Disclosed is a process for preparing at least one ether compound, comprising reacting at least one alcohol (I) with at least one polyol (II) in the presence of a functional polymer [polymer (F)] as a catalyst (X), wherein: the alcohol (I) is represented by the general formula (1): R1-OH (1) wherein R1 is a hydrocarbon group having 1 to 36 carbon atoms, the polyol (II) is represented by the general formula (2): R2-(OH) m (2) wherein R2 represents the skeleton moiety of the polyol and m is an integer of from 2 to 20, and polymer (F) is a polymer comprising recurring units derived from at least one ethylenically unsaturated monomer [monomer (M)] and bearing at least one cation exchange group. Further disclosed is a surfactant composition obtained by said process, and featuring an excellent detergency performance.
摘要:
Herein are provided derivatized hyperbranched polyglycerols (“dHPGs”). The dHPG comprises a core comprising a hyperbranched polyglycerol derivatized with C1C20 alkyl chains and a shell comprising at least one hydrophilic substituent bound to hydroxyl groups of the core, wherein the hyperbranched polyglycerol comprises from about 1 to about 200 moles of the at least one hydrophilic substituent. The dHPGs are for use as agents for the delivery of a drug or other biologically active moiety to the urinary tract, the digestive tract, the airways, the vaginal cavity and cervix and the peritoneal cavity to treat indications such as cancer, which may be useful in the treatment of or the manufacture of a medicament, in the preparation, of a pharmaceutical composition for the treatment of cancer, as a pre-treatment or co-treatment to improve drug uptake in a tissue. Furthermore, there are provided methods of making dHPGs.
摘要:
A process for producing hyperbranched, dendritic polyglycerol from glycerol comprising the steps of adding in a vessel glycerol and a CaO-based catalyst, flushing an inert gas to the resulting mixture and hermetically closing the reaction vessel, allowing pressure to build up from 1 to 10 bar above atmospheric, and heating the reaction mixture at a reaction temperature of at least 100° C. and below its boiling point. The process further comprising the steps of maintaining the reaction conditions until at least 40 wt. % of glycerol is polycondensed and converted into hyperbranched polyglycerol, with concomitant water formation, and separating the dendritic polyglycerol from other components in the mixture. The calcium based catalyst is nanostructured calcium oxide in the form of a powder of mean particle size smaller than 100 nm measured according to ASTM D4464.
摘要:
An object of the invention is to provide resin premix compositions which include a polyol and a hydrocarbon foaming agent while still exhibiting good storage stability, the polyol being obtained without the use of ring-opening polymerization reaction of a cyclic ether. The resin premix composition of the invention includes at least a polyol and a hydrocarbon foaming agent, the polyol including a polyether ester polyol (A) obtained by reacting a polyether polyol with a fatty acid and/or a fatty acid ester, the polyether polyol being obtained by condensing a polyhydric alcohol including 50 mol % or more of a trihydric or higher alcohol.
摘要:
Provided is a polyethylene glycol derivative which contains two PEG chains, which is bound to a diacylglycerol, which has high purity, and which enhances the stability of liposomes. Polyethylene glycol is represented by the following formula (1) and which is bound to a diacylglycerol:In Formula (1), R1 is a hydrocarbon group containing 1 to 7 carbon atoms, R2 is an alkyl or alkenyl group containing 9 to 21 carbon atoms, n is the average number of moles of added polyethylene glycol chains, 10 n 100, and X is a linker site between branched polyethylene glycol and the diacylglycerol and is represented by the following formula (2): In Formula (2), Y is an ether bond, an ester bond, a urethane bond, an amide bond, or a carbonate bond and 1 and m are an integer of 0 to 6.
摘要:
The present invention relates to polyglycerol partial esters of linear, unsubstituted carboxylic acids with the provisos that the polyglycerol obtained by hydrolysis or alcoholysis of the polyglycerol partial ester comprises an average degree of polymerization of from 2 to 8 and the polydispersity index of said polyglycerol is greater than 0.75.