229 results about "Lauryl methacrylate" patented technology

Methods of making room temperature-curable polymers. Reactants include siloxane-terminated polymers and silanols. The reactants are mixed, and the polymerization allowed to proceed in air at room temperature. The polymers are exceptionally useful because they allow for the incorporation into the polymers themselves of one or more therapeutic compounds. Thus, medical devices from which controlled drug release is desirable (for either local or systemic delivery) can be coated with therapeutic compound-containing polymers of the invention. In a preferred embodiment, a polymer of poly(MPCw:LAMx:HPMAy:TSMAz) where w, x, y, and z represent the molar ratios of monomers used in the feed for preparing the polymer; MPC represents the unit 2-methacryoyloxyethylphosphorylcholine, LMA represents the unit lauryl methacrylate, HPMA represents the unit 2-hydroxypropyl methacrylate, and TSMA represents the unit 3-trimethoxysilylpropyl methacrylate is reacted with polydimethylsiloxane. In another preferred embodiment, a therapeutic compound is incorporated into the polymer, such as dexamethasone.

The invention relates to a preparation method of salt-tolerance controlled-release high-water-absorption resin with hydrophobic chain segments. At present, acrylic-acid-series high-water-absorption resin has many defects and particularly has the defects that the salt tolerance is poor and the water absorbing capacity is easy to be weakened remarkably and normally is weakened to dozens of times from hundreds of times under the action of metal ions, therefore, the improvement of the salt tolerance of the high-water-absorption resin has significance. According to the invention, the high-water-absorption resin with a three-dimensional cross-linked network is formed through copolymerization of acrylic-acid hydrophobic monomers such as butyl methacrylate, iso-octyl methacrylate, n-decyl methacrylate, lauryl methacrylate, lauryl methacrylate or octadecyl methacrylate with acrylic acid, acrylic amide and carboxymethy cellulose under the existence of initiator and cross-linking agent. Compared with the high-water-absorption resin without the hydrophobic chain segments, the high-water-absorption resin disclosed by the invention has the advantages that the magnification on absorption of 0.9% sodium chloride solution is improved by 89.28%, and the water retention is improved by 13.15%.

Chemically prepared toner is manufactured by aggregation in which the binder resin is a latex copolymer having a methacrylic acid ester of long chain, saturated alkyl, which may be lauryl methacrylate. This binder resin has a small amount by weight of acrylic acid component and has other nonionic components, which may be styrene and butyl acrylate moieties. Aggregation is carried out in an aqueous medium, which may have organic solvent components. The aggregation is then heated, and because of the selection of the binder resin to have the long chain ester, the heating step has minimal effect on particle size.