摘要:
EpB polyether alcohols were prepared by reacting 3,4-epoxy-1-butene with water or an alcohol such as methanol, butanol or ethylene glycol. Polyether alcohols thus prepared were found to have utility as reactive diluents for oxidatively curable coatings. In addition to this application, 3,4-epoxy-1-butene oligomers can also function as a resin, a chain extender, a monomer, and an additive for various oxidatively curable coating systems including alkyds, unsaturated polyesters, (meth)acrylate functional resins, urethanes, and latexes.
摘要:
A multilayer optical retardation compensation film having at least one positive C-plate and at least one negative C-plate is used in an LCD device. The multilayer film may have a substantially flat wavelength dispersion curve, or the multilayer film combined with other layers in the LCD device may have a substantially flat wavelength dispersion curve. Polymer films for the positive C-plate may be identified according to their absorbance maxima at certain wavelength ranges.
摘要:
A sulfopolyester containing residues of 2,2,4,4-tetralkylcyclobutane-1,3-diol such as 2,2,4,4-tetramethylcyclobutane-1,3-diol is highly dispersible in water. This allows one to reduce the content of sulfonate groups or reduce the amount of ethylene glycol or other hydrophilic glycols to retain good water resistance in cured coatings. The sulfopolyester may also be a reaction product of a 2,2,4,4-tetralkylcyclobutane-1,3-diol along with 1,4-cyclohexanedimethanol, neopentyl glycol, or a mixture thereof with an acid component. Coating compositions may also contain these sulfopolyesters along with water and a polymer resin.
摘要:
This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.
摘要:
Waterborne coating compositions are disclosed that include a latex emulsion polymer, and, as a coalescent, a diester of hydroxypivalyl hydroxypivalate. The coating compositions of the invention have a reduced VOC content and provide satisfactory coalescing activity.
摘要:
Disclosed is a low VOC coating additive employing a water-dispersible polymer, a water insoluble plasticizer, cyclohexanedimethanol, and optionally an amphiphilic component. The additive can be added to a coating to improve at least one performance characteristics of the coating, such as, wet-edge time, open time, scrub resistance, wet adhesion, and water resistance.
摘要:
A multilayer optical retardation compensation film having at least one positive C-plate and at least one negative C-plate is used in an LCD device. The multilayer film may have a substantially flat wavelength dispersion curve, or the multilayer film combined with other layers in the LCD device may have a substantially flat wavelength dispersion curve. Polymer films for the positive C-plate may be identified according to their absorbance maxima at certain wavelength ranges.
摘要:
A waterborne acetoacetate-functionalized alkyd coating composition is disclosed which includes an acetoacetate-functionalized alkyd resin, at least one drier, and water. The acetoacetate-functionalized alkyd resin is the reaction product of (i) an alkyd resin, and (ii) an alkyl acetoacetate. Also disclosed is a method of preparing a waterborne acetoacetate-functionalized alkyd coating composition which includes the step of contacting an acetoacetate-functionalized alkyd resin with at least one drier in the presence of water.
摘要:
This invention provides an improved process for preparing phenol-functional polyester resins which are useful in thermosetting coating compositions. The process involves a polycondensation reaction comprising a two-step charging procedure and suitable reaction conditions.
摘要:
Provided are novel phenolic-functional polyesters which are prepared by a direct polycondensation process. The polyesters formed therefrom are useful in enamel compositions and upon curing provide coatings which exhibit superior hardness, impact resistance and acid resistance heretofore unachievable with other polyester-based coatings.