Polyester moulding composition for use in electronic devices
First Claim
1. A polyester molding composition having a comparative tracking index (CTI) of at least 400 Volt and a glow wire ignition temperature (GWIT) of at least 775°
- C. at 1.0 mm, consisting of(A) 100 parts by weight (pbw) of a polymer composition consisting of (A-i) at least 50 pbw of a thermoplastic polyester, and, optionally, (A-ii) at least one other polymer,(B) between 2 and 40 pbw of a flame retardant system consisting of (B-i) a nitrogen based organic flame retardant compound free of phosphorus or a phosphorus free salt thereof, and, optionally,(B-ii) less than 1 pbw of a phosphorus containing flame retardant compound, comprising less than 0.1 pbw of an arylenedioxy-tetrakisphenyl-diphosphate and substituted and oligomeric derivatives thereof, (C) between 0.01 and 1 pbw of a mould release agent, and optionally(D) 0-10 pbw of a fibrous reinforcing agent, and(E) 0-100 pbw of other additives.
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Accused Products
Abstract
The invention relates to A polyester moulding composition consisting of (A) 100 parts by weight (pbw) of a polymer composition consisting of (A-i) at least 50 pbw of a thermoplastic polyester, and, optionally, (A-ii) at least one other polymer, (B) between 2 and 40 pbw of a flame retardant system consisting of (B-i) a nitrogen based organic flame retardant compound free of phosphorus or a phosphorus free salt thereof, and, optionally, (B-ii) less than 1 pbw of a phosphorus containing flame retardant compound, (C) between 0.01 and 1 pbw of a mould release agent, and optionally (D) 0-10 pbw of a fibrous reinforcing agent, and (E) 0-100 pbw of other additives. The invention also relates to the use of the composition for making molded parts, in particular part for use in electrical or electronic applications, and to these molded parts.
17 Citations
17 Claims
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1. A polyester molding composition having a comparative tracking index (CTI) of at least 400 Volt and a glow wire ignition temperature (GWIT) of at least 775°
- C. at 1.0 mm, consisting of
(A) 100 parts by weight (pbw) of a polymer composition consisting of (A-i) at least 50 pbw of a thermoplastic polyester, and, optionally, (A-ii) at least one other polymer, (B) between 2 and 40 pbw of a flame retardant system consisting of (B-i) a nitrogen based organic flame retardant compound free of phosphorus or a phosphorus free salt thereof, and, optionally, (B-ii) less than 1 pbw of a phosphorus containing flame retardant compound, comprising less than 0.1 pbw of an arylenedioxy-tetrakisphenyl-diphosphate and substituted and oligomeric derivatives thereof, (C) between 0.01 and 1 pbw of a mould release agent, and optionally (D) 0-10 pbw of a fibrous reinforcing agent, and (E) 0-100 pbw of other additives. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- C. at 1.0 mm, consisting of
Specification