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US 9,637,634 B2Granted
Flame-retardant polycarbonate molding materials V
AssigneeCovestro Deutschland AG
InventorsMathieu Jung, Thomas Eckel, Vera Taschner
Life of this patent
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Abstract
The present invention relates to flame-retardant, impact-modified polycarbonate (PC) compositions and molding compositions which have good mechanical properties, good resistance to chemicals and high hydrolytic stability. The present application additionally relates to the use of the compositions in the production of molded articles, and to molded articles produced from the compositions.
Claims18
Composition comprising
- A) from 80 to 98 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate,
- B) from 0.5 to 6.0 parts by weight of rubber-modified graft polymer,
- C) from 0.8 to 5.0 parts by weight of at least one cyclic phosphazene according to formula (X)
- wherein
- k represents 1 or an integer from 1 to 10,
- wherein the trimer content (l=1) is from 60 to 98 mol %, wherein the content of higher oligomeric phosphazenes (k=3, 4, 5, 6 and 7) is from 5 to 20 mol %, in each case based on component C,
- and wherein
- R
- is in each case identical or different and represents an amine radical;
- C1- to C8-alkyl, each optionally halogenated;
- C1- to C8-alkoxy;
- C5- to C6-cycloalkyl, each optionally substituted by alkyl and/or by halogen;
- C6- to C20-aryloxy each optionally substituted by alkyl, and/or by halogen, and/or by hydroxy;
- C7- to C12-aralkyl, each optionally substituted by alkyl, and/or by halogen;
- or a halogen radical;
- or an OH radical,
- D) from 0 to 5.0 parts by weight of rubber-free vinyl (co)polymer or polyalkylene terephthalate,
- E) from 0 to 15.0 parts by weight of one or more additives,
- F) from 0.05 to 1.00 part by weight, of one or more antidripping agents,
- wherein all the parts by weight are optionally normalised that the sum of the parts by weight of all the components A+B+C+D+E+F in the composition is 100.
17 more elements
Composition comprising
- A) from 80 to 98 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate,
- B) from 0.5 to 6.0 parts by weight of rubber-modified graft polymer,
- C) from 0.8 to 5.0 parts by weight of at least one cyclic phosphazene according to formula (X)
- wherein
- k represents 1 or an integer from 1 to 10,
- wherein the trimer content (k=1) is from 65 to 85 mol %, the tetramer content (k=2) is from 10 to 20 mol %, the content of higher oligomeric phosphazenes (k=3, 4, 5, 6 and 7) is from 5 to 15 mol %, and the content of phosphazene oligomers with k≧8 is from 0 to 1 mol %, in each case based on component C,
- and wherein
- R
- is in each case identical or different and represents an amine radical;
- C1- to C8-alkyl, each optionally halogenated;
- C1- to C8-alkoxy;
- C5- to C6-cycloalkyl, each optionally substituted by alkyl and/or by halogen;
- C6- to C20-aryloxy, each optionally substituted by alkyl and/or by halogen and/or by hydroxy;
- C7- to C12-aralkyl, each optionally substituted by alkyl and/or by halogen;
- or a halogen radical;
- or an OH radical,
- D) from 0 to 5.0 parts by weight of rubber-free vinyl (co)polymer or polyalkylene terephthalate,
- E) from 0 to 15.0 parts by weight of one or more additives,
- F) from 0.05 to 1.00 part by weight of one or more antidripping agents, wherein the sum of the parts by weight of all the components A+B+C+D+E+F in the composition is 100.
16 more elements
Dependencies are inferred from the claim text.