| 摘要 |
The present invention relates to impact-modified polylactic acid/polycarbonate compositions, containing
A) 48 to 90 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of aromatic polycarbonate,B) 1 to 40 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of polylactic acid,C) 0.5 to 15 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of graft polymer,D) 2 to 25 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of a salt of a phosphinic acid andoptionally additional components such as vinyl polymers and additives,
which are distinguished by an optimum combination of high heat resistance, good flame retardance and excellent mechanical properties, to the use of the polycarbonate compositions for the production of mouldings and the mouldings themselves. |
| 主权项 |
1. A composition consisting of
A) 54 to 72 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of an aromatic polycarbonate, wherein the aromatic polycarbonate is a homopolycarbonate based on bisphenol A, a homopolycarbonate based on 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, or a copolycarbonate based on bisphenol A and 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, B) 15 to 25 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of a polylactic acid, C) 5 to 9 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of a graft polymer, wherein the graft polymer is selected from the group consisting of an ABS polymer and a graft polymer with silicon acrylate rubber backbone, wherein C) comprises at least one graft polymer of
C.1 5 to 95 wt. %, of at least one vinyl monomer onC.2 95 to 5 wt. % of at least one backbone selected from the group consisting of butadiene rubbers and silicone acrylate rubbers, D) 7.5 to 15 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D, of a salt of a phosphinic acid, E) 0 to 10 parts by weight, based on the sum of the parts by weight of components A+B+C+D=100 of a vinyl (co)polymer, and F) 0.7 to 5.0 parts by weight, based in each case on the sum of the parts by weight of components A+B+C+D=100, of at least one additive as component F selected from the group consisting of flame retardants, flame retardant synergists, anti-drip agents, lubricants and mould release agents, nucleating agents, stabilisers, antistatic agents, acids, fillers and reinforcing materials, dyes and pigments,wherein the sum of the parts by weight of components A+B+C+D in the composition adds up to 100. |
