摘要:
The present invention discloses a modifier for modifying a polyester fiber as well as a preparation method and application of the same. The modifier contains ethylene glycol, two-hydroxy-end polyether, dimethyl terephthalate, two-polyether-end modified organosilicon and a metal acetate catalyst. A two-step continuous production process is adopted. The first step is esterification; that is, ethylene glycol, two-hydroxy-end polyether, dimethyl terephthalate, and two-polyether-end organosilicon are added into a reactor, and have an esterification reaction in the presence of the catalyst. In the second step, the materials produced by the esterification are transported to a polymerizer, and have a polymerization reaction under the conditions of high temperature, vacuum and catalyst, producing the high molecular weight polyester/polyether/organosilicon terpolymer with a molecular weight of 1000˜50000 as the desired modifier. This modifier can be used either directly or in combination with some other substances such as surfactants, so as to modify the polyester fiber.
摘要:
The present invention is aimed at a series of novel glycerin polyesters that provide desired aesthetics and structure in cosmetic formulation. These glycerin polymers are synthesized by polycondensation polymerization, in the presence of a monofunctional monomer or terminal group. By carefully choosing the groups the properties can be dramatically altered. The mono-functional alcohols, being only able to react in one position, can only be located on the polymer chain ends. This provides very unique polymer structure and morphology. These regiospecific polyesters will have very unique physical properties and have a wide variety of solubilities. Furthermore, by the incorporation of a co-monomer will produce a copolymer with drastically different solubilities and aesthetics.
摘要:
The present invention is directed toward a series of silicone/organic polymers with tunable ascetics, solubility, film formation and performance in cosmetic formulation. These novel polymers are designed with the three different hydroxyl containing monomers in the polyester. One is a siliphillic (silicone loving) and the other a oleophillic (oil loving) and the last hydrophilic (water loving). It is critical for there to be all three types of monomers linked together in a single polymer in order to make polymers in which solubility, spreadability, surface tension and film hardness can be altered for different cosmetic applications. When these groups are present a polymer there is a wide range of variation possible, making these polymers formulator friendly. The physical and chemical properties, including but not limited to: film formation of the current invention can be tuned rapidly by controlling the fatty group used, the degree of polymerization of the polymer, the molecular weight of the silicone polymer, the presence of ethylene oxide in the polymer backbone and the ratio of monomers to one another.
摘要:
The above deficiencies in the art are alleviated by, in an embodiment, a method of preparing a carboxylic acid end-capped oligomer comprising melt reacting a dicarboxylic acid, a dihydroxy compound, a hydroxy end-capped soft block compound, a diaryl carbonate, and a catalyst, wherein the molar ratio of dihydroxy end-capped soft block compound to dihydroxy compound is 1:4 to 1:40, the molar ratio of dicarboxylic acid to the combined molar amounts of dihydroxy compound and hydroxy end-capped soft block compound is 1.01:1 to 2:1, and the molar ratio of diaryl carbonate to the combined molar amounts of dihydroxy compound and hydroxy end-capped soft block compound is 1.5:1 to 3:1. A carboxylic acid end-capped oligomer prepared by the above method is also disclosed. A thermosetting composition comprising the carboxylic acid end-capped oligomer, and an article comprising the thermosetting composition, are also disclosed.
摘要:
A copolymer composition comprises an arylate polyester unit, an aromatic carbonate unit, and a soft-block moiety, wherein individual occurrences of the soft block moiety are linked by a spacer unit comprising one or more of the arylate polyester units, one or more of the aromatic carbonate units, or a combination comprising each of these. In one embodiment, a soft block moiety comprises a polysiloxane unit. A film of the composition has a percent transmittance of greater than or equal to 60% as determined according to ASTM D1003-00. A method of forming a copolymer composition is disclosed, comprising substantially forming the bis-haloformates of a dihydroxy compound comprising an arylate polyester unit, and a dihydroxy compound comprising a soft-block moiety, and reacting the bis haloformates with a dihydroxy aromatic compound. In an embodiment, a multilayer article comprises the thermostable, weatherable polymer.
摘要:
A composition comprising a polyarylate-siloxane copolymer, said copolymer comprising arylate structural units having Formula I wherein R1 and R2 are independently at each occurrence a halogen atom, a nitro group, a C1-C20 aliphatic radical, a C3-C20 cycloaliphatic radical, or a C3-C20 aromatic radical; “b” and “c” are independently integers from 0 to 4; and at least one organosiloxane structural unit, wherein said polyarylate-siloxane copolymer is free of organic carbonate linkages.
摘要:
The invention relates to a method for producing non-pilling polyester fibres, whereby polyethylene terephthalate is produced in the presence of organosilicon compounds of tetrahydrofurfuryl alcohol. Preferably, tetrakistetrahydrofurfuryloxysilane or tris[tetrahydrofuryloxy]methylsilane is used.
摘要:
A copolymer composition comprises a polysiloxane block of Formula XIX or XXII, having 4 to 50 siloxane units, and a polyarylate-polycarbonate block consisting essentially of 50 to 99 mol % arylate polyester units and 1 to 50 mol % aromatic carbonate units, wherein 1 to 30 mole percent of the aromatic carbonate units are resorcinol carbonates, and 0 to 35 mol % of the aromatic carbonate units are bisphenol carbonates; wherein the sum of mole percentages of arylate polyester units, and aromatic carbonate units is 100 mol %; the polysiloxane blocks connect to an arylate ester unit, and/or an aromatic carbonate unit; the siloxane units of the polysiloxane block are present at 0.2 to 10 wt % based on weight of the copolymer composition; and a molded article of 3.2±0.12 millimeters thickness and consisting of the copolymer composition has a percent transmittance greater than or equal to 70%, according to ASTM D1003-00.
摘要:
Disclosed are compounds of formula (I): wherein R1 and R2 are defined herein, which are useful as inhibitors of the kinase activity of the IκB kinase (IKK) complex. The compounds are therefore useful in the treatment of IKK mediated diseases including autoimmune diseases inflammatory diseases and cancer. Also disclosed are pharmaceutical compositions comprising these compounds and processes for preparing these compounds.
摘要:
Disclosed are compounds of formula (I): 1 wherein R1 and R2 are defined herein, which are useful as inhibitors of the kinase activity of the InullB kinase (IKK) complex. The compounds are therefore useful in the treatment of IKK mediated diseases including autoimmune diseases inflammatory diseases and cancer. Also disclosed are pharmaceutical compositions comprising these compounds and processes for preparing these compounds.