摘要:
The present invention relates to copolymer surfactants and their use in, e.g., coatings such as latex paint and solvent-based paint, and to a method of dispersing colored pigments using the copolymer surfactant, colorant compositions in which at least one pigment is dispersed by a copolymer surfactant of the invention, a paint which has a colorant composition of the invention, and a method for making a paint having a colorant composition of the invention.
摘要:
The present invention relates to a universal metallic/pearlescent colorant composition that is free of VOCs including alkylphenol ethoxylate (APE) and formaldehyde. The colorant composition comprises substantially no resin and comprises microcrystalline cellulose and optionally a synthetic silicate to disperse the metallic pigments.
摘要:
The present invention relates to a dispersion of hybrid organic-inorganic nanocomposite molecules comprising discrete inorganic silica nanoparticles that are covalently bonded to organic polymers, wherein the dispersion has a high solid content (>30% wt.) and high silica content (>35% wt.) with low coagulum (about 100-400 ppm or about 0.05% wt or less). The hybrid organic-inorganic nanocomposite is prepared by (1) hydrolyzing silane monomers at acidic conditions; (2) surface treating inorganic silica nanoparticles with silane monomers; (3) stabilizing the surface-treated inorganic silica nanoparticles with an amine stabilizer; and (4) reacting organic monomers with surface-treated inorganic silica nanoparticles.
摘要:
The present invention relates to paint extenders or open-time extenders, which are mixed with an architectural coating, such as aqueous latex paints, to increase the coating's open time. The open-time extender comprises acrylic or vinyl latex particles having a mean diameter of less than about 150 nm, and at least one crosslinkable monomer that can crosslink the latex particles in the open-time extender to the latex particles in the architectural coating at ambient conditions. The open-time extender also comprises water and the total solid content of the open-time extender is less than about 15% by weight.
摘要:
The invention is related to glossy, low- or zero-VOC aqueous paint compositions, comprising water based latex polymer, a hiding pigment, at least one low-VOC coalescence aid having a volatile organic content of less than 50 g/L, and a second inorganic pigment with particle size ranging from about 1 to 100 nanometers. The paint composition gives good block resistance and mechanical strength and can be adopted for paints with at least glossy and semi-gloss finishes.
摘要:
The invention is directed to latex compositions comprising sequentially designed polymer having a first stage, a second stage and a third stage corresponding to a seed, a core and a shell. The latex polymer is suitable for aqueous low volatile organic compounds (“VOC”) paint (less than 50 g/L) with good block resistance, improved open time and increased water softening resistance. To attain good block resistance, the seed and the core contain monomers that form polymers with relatively harder characteristics and higher glass transition temperature (“Tg”) while the shell contains monomers that form polymers with softer characteristics and lower Tg. To gain improved open time, the latex polymer contains suitable level of hydrophilic monomers necessary to hold water. To achieve water softening resistance, hydrophobic monomers are grafted on hydrophilic portions of the shell or the core layers. The invention is also directed to the process of making the latex by a sequential emulsion polymerization.
摘要:
The present invention relates to a coating composition containing a polymer blend dispersion including: a first polymer having a relatively low molecular weight and a relatively low glass transition temperature and comprising a self-crosslinking monomer; and a second polymer having a relatively high molecular weight and a relatively high glass transition temperature. Latex paint compositions and architectural coatings containing the coating composition according to the invention are also described herein, as well as substrates coated therewith.
摘要:
A colorant composition containing a hydrophobic latex polymer component to impart resistance to water-softening and -staining in a paint film made from a latex paint formulated with the colorant composition, as well as the paint and paint film, and methods for making the foregoing.