Fluidity improver for aromatic polycarbonate resin, process for producing the fluidity improver for aromatic polycarbonate resin, aromatic polycarbonate resin composition, and molded product
View Patent ↗A fluidity improver for a PC resin that improves the melt fluidity during molding without impairing the excellent properties of the PC resin, and also yields a molded product in which external appearance defects are unlikely. The fluidity improver for an aromatic polycarbonate resin according to the present invention is including a first polymer obtained by polymerizing 0.5 to 99.5 parts by mass of a monomer first mixture including 0.5 to 99.5% by mass of styrene and 0.5 to 99.5% by mass of phenyl (meth)acrylates, in the presence of a second polymer obtained by polymerizing 0.5 to 99.5 parts by mass of a second monomer mixture containing 0.5 to 50% by mass of α-methylstyrene, 0.5 to 99% by mass of styrene and 0.5 to 99% by mass of phenyl (meth)acrylates, wherein the combined total of both monomer mixtures is 100 parts by mass.
1. A fluidity improver for an aromatic polycarbonate resin, comprising a polymer (X) obtained by polymerizing 0.5 to 99.5 parts by mass of a monomer mixture (b) comprising 0.5 to 99.5% by mass of styrene (b 1 ) and 0.5 to 99.5% by mass of phenyl (meth)acrylates (b 2 ),
in presence of a polymer (A) obtained by polymerizing 0.5 to 99.5 parts by mass of a monomer mixture (a) comprising 0.5 to 50% by mass of α-methylstyrene (a 1 ), 0.5 to 99% by mass of styrene (a 2 ) and 0.5 to 99% by mass of phenyl (meth)acrylates (a 3 ),
wherein a combined total of (a) and (b) is 100 parts by mass.
2. The fluidity improver for an aromatic polycarbonate resin according to claim 1 , wherein a polymerization extent of said polymer (X) is not less than 95% by mass.
3. A method of producing a fluidity improver for an aromatic polycarbonate resin, said process comprising:
obtaining a polymer (A) by polymerizing 0.5 to 99.5 parts by mass of a monomer mixture (a) comprising 0.5 to 50% by mass of α-methylstyrene (a 1 ), 0.5 to 99% by mass of styrene (a 2 ) and 0.5 to 99% by mass of phenyl (meth)acrylates (a 3 ), and
polymerizing 0.5 to 99.5 parts by mass of a monomer mixture (b) comprising 0.5 to 99.5% by mass of styrene (b 1 ) and 0.5 to 99.5% by mass of phenyl (meth)acrylates (b 2 ) in presence of said polymer (A),
wherein a combined total of (a) and (b) is 100 parts by mass.
4. The method of producing a fluidity improver for an aromatic polycarbonate resin according to claim 3 , wherein said polymerizing is halted once a polymerization extent has reached at least 95% by mass.
5. An aromatic polycarbonate resin composition, comprising 0.1 to 30% by mass of the fluidity improver for an aromatic polycarbonate resin according to claims 1, and 70 to 99.9% by mass of an aromatic polycarbonate resin.
6. An aromatic polycarbonate resin composition, comprising 0.1 to 30% by mass of the fluidity improver for an aromatic polycarbonate resin according to claims 1, 0.01 to 5% by mass of a polytetrafluoroethylene, and 65 to 99.89% by mass of an aromatic polycarbonate resin.
7. A molded product obtained by molding the aromatic polycarbonate resin composition according to claim 5 .
8. The molded product according to claim 7 , in the form of lamp fitting component for a vehicle.
9. The molded product according to claim 7 , in the form of an extension reflector.
10. An aromatic polycarbonate resin composition, to comprising 0.1 to 30% by mass of the fluidity improver for an aromatic polycarbonate resin according to claims 2, and 70 to 99.9% by mass of an aromatic polycarbonate resin.
11. An aromatic polycarbonate resin composition, comprising 0.1 to 30% by mass of the fluidity improver for an aromatic polycarbonate resin according to claims 2, 0.01 to 5% by mass of a polytetrafluoroethylene, and 65 to 99.89% by mass of an aromatic polycarbonate resin.
12. A molded product obtained by molding the aromatic polycarbonate resin composition according to claim 6 .
13. A molded product obtained by molding the aromatic polycarbonate resin composition according to claim 10 .
14. A molded product obtained by molding the aromatic polycarbonate resin composition according to claim 11 .
15. The molded product according to claim 12 , in the form of lamp fitting component for a vehicle.
16. The molded product according to claim 13 , in the form of lamp fitting component for a vehicle.
17. The molded product according to claim 14 , in the form of lamp fitting component for a vehicle.
18. The molded product according to claim 12 , in the form of an extension reflector.
19. The molded product according to claim 13 , in the form of an extension reflector.
20. The molded product according to claim 14 , in the form of an extension reflector.
21. The fluidity improver according to claim 1 , wherein the monomer mixture (b) is free of α-methylstyrene.
22. The method of claim 3 , wherein the monomer mixture (b) is free of α-methylstyrene.