Laser-writable material
First Claim
1. A composition which comprises(i) a plastic material,(ii) 0.001 to 2.2% by weight of TiO2,(iii) no more than 0.1% by weight of carbon black having an average particle diameter of from 30 to 120 nm, and(iv) 0.01 to 20% by weight of a tracking resistance reducing additive which is a halogen-containing compound, an antimony compound, a hydroxide or glass fibers,wherein said plastic material comprises polyethylene, polypropylene, polyisobutylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetates, polyacrylonitrile, polyacrylates, polymethacrylates, polybutadiene, copolybutadiene, ABS plastics, ethylene-vinyl acetate copolymers, high-molecular-weight esters of aromatic polycarboxylic acids with polyfunctional alcohols, polyamides, polyimides, polyamideimides, liquid crystal polymers, aromatic polycarbonates, polyurethanes, polyethers, polyphenylene sulphides, polyacetates, products of the condensation of formaldehyde with phenols, products of the condensation of formaldehyde with urea, thiourea and melamine aminoplastics, epoxy resins, polyphenols, alkyd resins, maleate resins or mixtures thereof.
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Accused Products
Abstract
Plastic containing small amounts of titanium dioxide and, if appropriate, carbon black and an additive which reduces the tracking resistance, for the production of laser-writable mouldings.
43 Citations
3 Claims
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1. A composition which comprises
(i) a plastic material, (ii) 0.001 to 2.2% by weight of TiO2, (iii) no more than 0.1% by weight of carbon black having an average particle diameter of from 30 to 120 nm, and (iv) 0.01 to 20% by weight of a tracking resistance reducing additive which is a halogen-containing compound, an antimony compound, a hydroxide or glass fibers, wherein said plastic material comprises polyethylene, polypropylene, polyisobutylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetates, polyacrylonitrile, polyacrylates, polymethacrylates, polybutadiene, copolybutadiene, ABS plastics, ethylene-vinyl acetate copolymers, high-molecular-weight esters of aromatic polycarboxylic acids with polyfunctional alcohols, polyamides, polyimides, polyamideimides, liquid crystal polymers, aromatic polycarbonates, polyurethanes, polyethers, polyphenylene sulphides, polyacetates, products of the condensation of formaldehyde with phenols, products of the condensation of formaldehyde with urea, thiourea and melamine aminoplastics, epoxy resins, polyphenols, alkyd resins, maleate resins or mixtures thereof.
Specification
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- Resources
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsFoltin, Eckard, Erkelenz, Reiner, Yesildag, Mehmet C., Pischtschan, Alfred, Huff, Karl, Depcik, Hans-Werner
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Primary Examiner(s)NOT, DEFINED
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Application NumberUS07/306,677Time in Patent Office596 DaysField of Search524/413, 524/430, 524/496, 524/504, 524/577, 524/568, 524/589, 524/560, 524/542, 524/556, 524/64, 430/945US Class Current524/413CPC Class CodesB41M 5/267 Marking of plastic artifact...C08K 3/04 CarbonC08K 3/22 of metalsY10S 430/146 Laser beam
