Staining plastic surfaces |
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申请号 | US3663155D | 申请日 | 1968-09-30 | 公开(公告)号 | US3663155A | 公开(公告)日 | 1972-05-16 |
申请人 | OWENS ILLINOIS INC; | 发明人 | GRAY DON N; MUELLER BRUCE M; | ||||
摘要 | Plastic articles are provided with sub-surface markings which are scuff-proof and resistant to acid, alkali and solvent attack; a staining composition which includes a dye and a sublimable or pyrolyzable carrier is applied to the article and the article is heated whereby the dye penetrates and diffuses into the article and the carrier is volatilized. | ||||||
权利要求 | 2. a pyrolyzable polymer of an alpha-olefin sulfone in a volatile vehicle wherein the olefin has up to 30 carbon atoms, 2. The process of claim 1 wherein said dye has the formula: 3. The procEss of claim 1 wherein said dye is an anthraquinone dye. 3. an atactic or isotactic, pyrolyzable poly (alkylene oxide) and a Lewis Acid decomposition catalyst in a volatile vehicle, wherein the alkylene group has from two to 30 carbon atoms, said volatile vehicle being so selected that it will evaporate when heated to a temperature range of 150*-310* F. for about 2-35 minutes, II. heating said surface having said decorative composition to a temperature of about 150*-310* F. for about 2-35 minutes to vaporize the pyrolyzable materials in said decorative composition and to cause said dye to penetrate said surface. 4. A process for providing a decorable plastic article with a permanent sub-surface marking wherein said plastic is selected from polycarbonates, and polymers and copolymers of monoethylenically unsaturated monomers, said method comprising: I. applying a decorative composition onto the surface of said article, said composition consisting essentially of A. a plastic-surface penetrating dye, B. a carrier for said dye selected from the group consisting of: 5. The method of claim 4 wherein said decorative composition further includes a consistency adjusting amount of a particulate silica or bentonite clay and wherein said method further includes the step of (III) removing residual material from the surface of said article. 6. The method of claim 5 wherein step III is effected by the use of an air stream. 7. The method of claim 6 wherein said carrier is a liquid, pyrolyzable poly-alpha-methylstyrene. 8. The method of claim 6 wherein said carrier is a polymer of octadecene sulfone in a volatile article. 9. A process for providing a permanent sub-surface marking on a decorable plastic article selected from the group consisting of polycarbonate, polyethylene, polypropylene, polystyrene and polymers and copolymers of monomers selected from the group consisting of butene-1, pentene-1, hexene-1, 3-methylbutene-1, 4-methylpentene-1, 5-methylhexene-1, vinyl chloride and vinyl acetate, said method comprising a. applying a decorative composition to the surface of said article, said decorative composition consisting essentially of a dye capable of penetrating the surface of said article and a pyrolyzable carrier for said dye selected from the group consisting of poly(alpha-alkylstyrene) wherein the alkyl group has from one to nine carbon atoms, polyolefin sulfones containing up to 30 carbon atoms in a solvent for said sulfones, atactic and isotactic poly(alkylene oxide) wherein the alkylene radical has from two to 30 carbon atoms in a solvent for said oxide, and b. heating said surface of said plastic article for a time and at a temperature sufficient to pyrolyze said carrier and to diffuse at least a portion of said dye into said surface of said article, and c. removing residual decorative composition from said surface of said article. |
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