摘要:
A composition comprising (1) a thermosettable resin selected from the group consisting of an epoxy resin, an epoxy vinyl ester resin, an unsaturated polyester resin or a mixture thereof, and (2) an amphiphilic mock copolymer dispersed in the thermosettable resin; fiber-reinforced plastics (FRP), coatings and composites prepared therefrom; and methods of preparing these.
摘要:
Compositions comprising a blend of an inorganic base, an organic base, a monofunctional organic nucleophile or a multifunctional organic nucleophile and a thermoplastic hydroxy-functionalized polyetheramine can be formed into films and laminate structures by using conventional extrusion techniques. Containers and other molded parts can be fabricated from the films or laminate structures by using conventional fabricating techniques for thermoplastic polymers such as compression molding, injection molding, extrusion, thermoforming, blow molding and solvent casting.
摘要:
Thermoplastic hydroxy ether polymers containing inertly substituted or unsubstituted stilbene and ether linkages in the backbone chain and pendant hydroxyl moieties are prepared by reacting (a) an inertly substituted or unsubstituted dihydroxy-stilbene with (b) a diglycidyl ether and, optionally, (c) a difunctional monomer under conditions sufficient to cause the hydroxyl moieties to react with the epoxy moieties to form ether linkages and pendant hydroxyl moieties. The polymers exhibit excellent oxygen barrier properties and are useful in packaging oxygen-sensitive materials.
摘要:
Polyethers having improved barrier to oxygen are normally solid, thermoplastic polyethers having aromatic ether repeating units in their backbones and pendent hydroxyl moieties and pendent amido, N-substituted amido and/or hydroxyalkyl moieties. Such polyethers are prepared by reacting diglycidyl ethers of dihydric aromatic compounds such as diglycidyl ether of bisphenol A with dihydric phenols having pendent amido, N-substituted amido and/or hydroxyalkyl moieties such as 2,2-bis(4-hydroxyphenyl)acetamide and 3,5-dihydroxybenzamide.
摘要:
Polyhydroxyethers formed by reacting a diglycidyl ether of biphenol, such as diglycidyl ethers of bisphenol-A, and a dihydroxybiphenyl, such as dihydroxybiphenyl, tetramethyldihydroxybiphenyl, and tetrabromotetramethyldihydroxybiphenyl, exhibit high heat distortion temperatures. These compositions could find utility in extruded films, packaging and coatings.
摘要:
A composition comprising (1) a thermosettable resin selected from the group consisting of an epoxy resin, an epoxy vinyl ester resin, an unsaturated polyester resin or a mixture thereof, and (2) an amphiphilic mock copolymer dispersed in the thermosettable resin; fiber-reinforced plastics (FRP), coatings and composites prepared therefrom; and methods of preparing these.
摘要:
The invention, in one aspect, is a copolymer comprising amorphous polyamide hard segments, which contain 1-methyl-2,4-phenylene, 1-methyl-2,6-phenylene, or mixtures thereof structure units. The structure characteristics of 1-methyl-2,4-phenylene, 1-methyl-2,6-phenylene, or mixtures thereof render the hard segments having glass transition temperatures below 200° C. while maintaining physical properties required for making molded articles.
摘要:
The present invention relates to new (meth)acrylate compositions, their preparation and their use in ultraviolet light curable applications such as coatings, inks and adhesives.
摘要:
Compositions of the invention include particular hydroxy-functional polyesters and a natural polymer. Among articles that can be made from such compositions are those with sufficiently strong tensile strengths as to form disposable utensils. However, the compositions are more environmentally friendly than commodity plastics such as polyethylene or polystyrene. Starches are particularly preferred as the natural polymers for inclusion in the compositions.