摘要:
Methods are presented by which compressed fluids such as carbon dioxide, nitrous oxide, and ethane can be admixed with solvent-borne compositions that contain a high concentration of solid polymer, such as coating compositions, whereby precipitation of the solid polymer can be avoided, thereby preventing plugging of the mixing apparatus.
摘要:
A coating composition low in volatile organic solvents comprising a monodispersed acrylic polymer solutions containing supercritical, near supercritical or subcritical fluids as a diluent therein. Desirably, the monodispersed acrylic polymer has a molecular weight such that it is, as such, a polymeric coating vehicle.
摘要:
The instant invention is a hybrid dispersion, method of producing the same, articles made therefrom, and method of making such articles. The hybrid dispersion according to the present invention comprises the blending product of: (a) less than 30 percent by weight of a minor component comprising a hydrophobic polyurethane dispersion derived from one or more natural oil based polyols, based on the weight of the hybrid dispersion; and (b) less than 100 percent by weight of a major component selected from the group consisting of a latex emulsion, an epoxy, and a polyolefin dispersion; wherein the hybrid dispersion has a solid content in the range of 10 to 75 percent based on the weight of the hybrid dispersion.
摘要:
The instant invention is a polyurethane dispersion, method of producing the same, coated articles, and method for coating articles. The polyurethane dispersion according to the present inventions includes (a) one or more polyurethane units derived from one or more prepolymers wherein the one or more prepolymers comprise the reaction product of a mixture dissolved in dipropylene glycol dimethyl ether in the presence of one or more first surfactants with one or more isocyanates, wherein the mixture comprises one or more natural oil based polyols, and one or more adipate polyols, and optionally one or more short diols; and (b) water.
摘要:
A polyurethane elastomer is provided. The elastomer is the reaction product of at least a prepolymer and a chain extender, where the prepolymer is the reaction product of at least one polyol and at least one aliphatic diisocyanate. The chain extender is an aromatic diamine.
摘要:
Unsaturated cycloaliphatic esters like higher hydrocarbyl, functionally substituted or polyunsaturated cyclohex-3-ene carboxylates, made directly by cycloaddition of dienes with dienophillic (meth/eth)acrylates, and their derivatives like epoxides and urethanes, provide useful thermal and radiation curable coatings, inks, sealants, adhesives, solvents, acid scavengers, and intermediates for other uses.
摘要:
A process for the catalytic dehydration of saturated 2,2,4-trisubstituted glycol monoesters at elevated temperatures to unsaturated 2,2,4-trisubstituted monoesters in the presence of a non-volatile acid catalyst.
摘要:
The instant invention provides an aqueous dispersion, a coating composition, coating layers and coated article made therefrom. The coating composition according to the present invention comprises: (1) the inventive aqueous dispersion comprising the melt blending product of: (a) from 50 to 99 percent by weight of one or more polyethylene terephthalate resins, based on the total solid content of the dispersion; (b) from 1 to 50 percent by weight of one or more stabilizing agents comprising at least one second polyester, based on the total solid content of the dispersion, wherein said second polyester (i) has a carboxylic acid group and an acid number equal to or greater than 15, based on the solid content of the second polyester; or (ii) is a self-dispersing sulfopolyester; (c) one or more neutralizing agents; and (d) from 15 to 90 percent by weight of water, based on the total weight of the dispersion; wherein said dispersion has a solid content of 10 to 85 percent, based on the total weight of the dispersion; and (2) optionally one or more cross-linking agents.
摘要:
Prepolymers are prepared by a reaction of a polyisocyanate and a hydroxylmethyl containing polyester polyol derived from a fatty acid. The prepolymers can be prepared having isocyanate, hydroxyl, or a variety of other reactive functional groups. The prepolymers are useful in making polyurethanes and other polymers, or a crosslinking agents.
摘要:
Embodiments of the invention provide for a polycarbonate polyol including the reaction product of at least one polyol composition and a carbonate. The polycarbonate is one of an amorphous liquid and an amorphous solid at room temperature. The polyol composition includes at least one of a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol in a weight ratio from about 60:40 to about 5:95 and a polyol derived from a natural oil fatty acid or natural oil fatty acid methyl ester.