Polymer blends containing phosphates
OwnerBurkhard Reitze, Raimund Zimmermann +2inventors
InventorsBurkhard Reitze, Raimund Zimmermann, Wilfried Haese, Thomas Eckel
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Abstract
The present invention provides thermoplastic blends containing polycarbonate, mold-release agents with OH groups and mixtures of oligomer and monomer phosphorous compounds. The thermoplastic blends of the present invention find use in the manufacture of optical data carriers such as compact discs, video discs and other optical data carriers which can be written on and erased.
Claims14
Thermoplastic polymer mixtures containing at least one polycarbonate and at least one mould release agent having at least one free OH group, as well as at least one monophosphorus compound and at least one oligomeric phosphorus compound.
Process for producing moulded articles, characterised in that polymer mixtures according to one of the preceding claims are used.
Moulded articles produced from thermoplastic polymer mixtures containing at least one polycarbonate and at least one mould release agent with at least one free OH group as well as a special mixture of phosphorus compounds.
Optical data carriers produced from thermoplastic polymer mixtures containing at least one polycarbonate and at least one mould release agent with at least one free OH group, as well as a special mixture of phosphorus compounds.
Mixture containing at least 10 to 90 wt. % of a compound of the formula (II)
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- wherein in the formula R1, R2 and R3 independently of one another denote C1-C8-alkyl, C6-C20-aryl and/or C7-C12-aralkyl
- and m denotes 0 or 1 and n denotes 0 or 1;
- and at least 90 to 10 wt. % of a compound of the formula (III)
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- wherein in the formula R4, R5, R6, R7 independently of one another denote C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl and/or C7-C12-aralkyl, and k is 1 to 5.
Use of the polymer mixtures as defined in the preceding claims for producing moulded articles.
Dependencies are inferred from the claim text.