摘要:
A solid epoxy resin powder coarting composition which includes a divinylarene dioxide resin as one component; and wherein the solid epoxy resin powder coating composition can be formed by blending or reacting various other components with the divinylarene dioxide resin. For example, other components can include other epoxy resins; phenolic resins; or monomeric and/or polymeric isocyanates. The powder coating composition or formulation may advantageously provide, for example, a Fusion Bonded Epoxy coating on a substrate.
摘要:
A solid epoxy resin powder coating composition which includes a divinylarene dioxide resin as one component; and wherein the solid epoxy resin powder coating composition can be formed by blending or reacting various other components with the divinylarene dioxide resin. For example, other components can include other epoxy resins; phenolic resins; or monomeric and/or polymeric isocyanates. The powder coating composition or formulation may advantageously provide, for example, a Fusion Bonded Epoxy coating on a substrate.
摘要:
Flexible polyurethane foams are prepared by reacting a polyisocyanate with a high equivalent weight polyol. At least a portion of the high equivalent weight polyol is a polyester containing hydroxymethyl groups. The polyester is prepared in a multi-step process from animal or vegetable fats, by recovering the constitutent fatty acids, hydroformylating carbon-carbon double bonds in the fatty acids and reducing to form hydroxymethyl groups, and then forming a polyester by reaction with an initiator compound.
摘要:
Thermosetting powder coating compositions, wherein the compositions comprise an epoxy-terminated oxazolidinone-isocyanurate polymer and are capable of forming a foam when applied to a substrate in a powder coating process, as well as methods of making and uses of such compositions.
摘要:
Epoxy resins and mixtures of polyphenolic compounds which comprise cycloaliphatic moieties, processes for the production thereof and mixtures and cured products which comprise these resins and/or mixtures.
摘要:
A process is disclosed for producing resilient polyurethane foams by foaming an organic polyisocyanate, an iso-cyanate-reactive compound and a fusible polymer. The improvement in the hardness of the foams is achieved without adversely affecting the other properties of the foams, such as tensile strength and elongation.
摘要:
The present invention relates to new reactive monomer compositions that have a plurality of reactive, functional moieties, such as one or both of a hydroxyl moiety or a carboxylic acid moiety. The present invention also further relates to use of such reactive monomer compositions as a component of curable coating compositions, especially curable powder coating compositions.
摘要:
A solid epoxy resin powder coating composition which includes a divinylarene dioxide resin as one component; and wherein the solid epoxy resin powder coating composition can be formed by blending or reacting various other components with the divinylarene dioxide resin. For example, other components can include other epoxy resins; phenolic resins; or monomeric and/or polymeric isocyanates. The powder coating composition or formulation may advantageously provide, for example, a Fusion Bonded Epoxy coating on a substrate.
摘要:
A process for forming a cured composition, including: admixing a blocked isocyanate, an epoxy resin, and a catalyst to form a mixture; reacting the mixture to form at least one of oxazolidone and isocyanurate rings; wherein the reaction product has an oxazolidone-isocyanurate peak in the range of 1710 to 1760 cm−1 as measured by infrared spectroscopy. In some embodiments, the reaction product does not have an isocyanate absorbance peak at about 2270 cm−1 as measured by infrared spectroscopy. In other embodiments, the reaction product does not have a hydroxyl absorbance peak at about 3500 cm−1 as measured by infrared spectroscopy.
摘要:
A process for converting epoxy resin to episulfide resin through reactive melt extrusion of a solid epoxy resin with a sulfur donating compound. The resulting resin provides for an application that utilizes the resulting extruded episulfide resin as a low application temperature resin for powder coatings applications.