Abstract:
A method for coating thermoplastic resin beads for use in imitation pearls includes the steps of: applying to celluloid a surface treatment compound (A) dissolved into a mixed solution of acetone, ethylacetate, butylacetate, and benzene; coating the surface treated celluloid with compounds for an under coat and a mid coat, each compound being obtained by dissolving celluloid into a mixed solution of ethylacetate and amylacetate, and adding a pigment thereto; and coating the celluloid with a compound for a top coat (D) that is prepared by dissolving celluloid into ethylacetate, and adding a pigment thereto.
Abstract:
A method for modifying the surface of a polymer substrate is provided, which includes applying a permeating substance to predetermined region on the surface of the polymer substrate, and bringing a supercritical fluid into contact with the surface of the polymer substrate to which the permeating substance has been applied to cause the permeating substance to permeate into the polymer substrate. This method makes it possible to selectively (partially) modify a portion of the surface of the polymer substrate by an easier method.
Abstract:
The invention relates to an automated process for the antistatic coating of plastic moulding surfaces after production of the plastic moulding or after subsequent optional working of the moulding or finishing of the surface, and before cleaning of the plastic moulding by an aqueous washing process, and/or before polarization by chemical and/or physical methods, or to an automated process for the antistatic coating of the surface of a plastic-coated and/or lacquer-coated moulding prior to cleaning and/or lacquering of the coated moulding, an antistatic coating being applied by bringing the plastic and/or lacquer surface into contact with a solution containing at least one surfactant and at least 20 wt. % of at least one organic solvent and optionally water, the volatile constituents extensively or completely evaporating and a film containing surfactant being dried on, in order extensively or completely to prevent particle contamination due to electrostatic charging until the moulding is cleaned and/or polarized, and in order to produce extensively or completely clean plastic and/or lacquer surfaces after the cleaning and/or polarization.
Abstract:
A method using irradiation with optical light having a wavelength of 160 to 500 nanometers without higher wavelengths with cooling of the surface during the irradiation to modify the surface (12A, 104A, 202A, 304A, 402A, 502A) of a substrate (12, 104, 202, 304, 402, 502) is described. The light is filtered or the lamp (24, 106, 212, 306, 510) is restricted to the limited range to avoid the affects of the higher spectra. The light can be pulsed or continuous. The method is significantly enhanced by the presence of water (14, 124, 204, 306, 410, 508) on the surface, preferably also in the presence of ozone in the water. The treated surfaces are more paintable and bondable.
Abstract:
A surface reforming method for a plastic molded product of this invention is characterized by comprising a step (a) for immersing a plastic molded product into supercritical carbon dioxide or subcritical carbon dioxide under a temperature lower than the glass transition temperature of said plastic, and a step (b) for vaporizing carbon dioxide adhered to the surface of the plastic molded product under a temperature lower than the glass transition temperature of said plastic. A plastic molded product may be composed of a polymer having a polar group. Examples of such a plastic molded product are a biaxially oriented polyester film, an unoriented polystyrene film, and a biaxially oriented polystyrene film
Abstract:
The invention relates to a process for coating a material surface comprising the steps of: (a) reacting the material surface with a compound of formula 1 nullwherein the variables are as defined in the claims; (b) reacting the so modified surface with a functional polymerization initiator having a functional group that is co-reactive to L2 or L2null; and (c) applying one or more different ethylenically unsaturated hydrophilic monomers or macromonomers to the bulk material surface obtainable according to step (b) and polymerizing said macromonomers, thereby providing a preferably hydrophilic surface coating onto the material surface. Composite materials obtainable according to the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.
Abstract:
A synthetic polymer based surface is coated with polymer particles without the use of an adhesive. A top surface layer is swollen or semidissolved by contacting with a solvent such as acetone, polymer particles are contacted with the surface to partially embed the particles in the surface layer, and the surface layer is dried. The polymer particles are either dry or in a slurry when contacted with the surface, and contact with the polymer particles may be simultaneous or subsequent to contacting with the solvent. The particles may be particles for chromatography, and may be derivatized before or after contacting with the surface such as by coupling an enzyme, DNA, an antibody or an antigen.
Abstract:
Prior to paint coating, a golf ball is surface treated with a surface treating agent comprising a silane coupling agent of the formula: (RO).sub.a --Si--(X).sub.b wherein R is alkyl, X is a monovalent hydrocarbon group, letters a and b are integers of 1 to 3, satisfying a+b=4 and optionally an epoxy compound. The surface treatment helps the ball surface bear a paint coating of quality. The surface treating agent may be a mixture of the salane coupling agents.
Abstract translation:在涂漆之前,用包含下式的硅烷偶联剂的表面处理剂对高尔夫球进行表面处理:(RO)a-Si-(X)b其中R是烷基,X是一价烃基,字母a b为1〜3的整数,满足+ b = 4,任选为环氧化合物。 表面处理有助于球面承受质量的涂料。 表面处理剂可以是烷烃偶联剂的混合物。
Abstract:
The invention relates to the chemical bonding of a polymer/or polymers onto non-metallic substrates such as cellophane by ultrasonic techniques. The cellophane film is preactivated by contacting with silver nitrate solution followed by treatment with potassium hydroxide solution whereby particles of silver and silver oxide are uniformly distributed, in situ, over the surface of cellophane film. The pretreated cellophane film when contacted with grafting solution, that contains monomers, prepolymers, catalyst, graft initiator and other ingredients of the composition, which is being agitated with ultrasonic energy results in polymerization of monomer/prepolymer onto the surface of the cellophane film.