Water resistant permanent antistatic thermoplastic composition
View Patent ↗A water resistant permanent antistatic thermoplastic composition contains about 100 parts by weight of a thermoplastic polymer, such as polycarbonate or a blend thereof, about 0.1 to about 10 parts by weight of an antistatic agent, and about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer.
1. A thermoplastic composition, comprising:
about 100 parts by weight of a polycarbonate, an aromatic polycarbonate, a (co)polyestercarbonate, an aromatic (co)polyestercarbonate, or combinations thereof;
about 0.1 to about 10 parts by weight of an antistatic agent; and
about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer.
2. The composition of claim 1 , wherein the antistatic agent is a sulfonic acid salt according to the formula
wherein Q is nitrogen or phosphorus; R 1 is C 1 –C 40 alkyl, C 1 –C 40 haloalkyl, C 6 –C 40 aryl, (C 6 –C 12 aryl)C 1 –C 40 alkyl, or (C 1 –C 40 alkyl)C 6 –C 12 aryl; and R 2 , R 3 , R 4 and each independently hydrogen, C 1 –C 20 alkyl, C 6 –C 12 aryl, (C 6 –C 12 aryl)C 1 –C 20 alkyl, or (C 1 –C 20 alkyl)C 6 –C 12 aryl.
3. The composition of claim 2 , wherein Q is phosphorus and R 1 is a C 1 –C 40 haloalkyl group wherein the halo is fluoro.
4. The composition of claim 1 , wherein the antistatic agent is a sulfonic acid salt according to the formula
wherein Q is nitrogen or phosporus, X is independently selected from halogen or hydrogen provided that at least one X is halogen; n, m and p are integers from 0 to 12; Y is a single bond or nitrogen, oxygen, sulfur, selenium, phosphorus, or arsenic; R 6 , R 7 , and R 8 are each independently C 1 –C 8 alkyl or C 6 –C 12 aryl; and R 9 is C 1 –C 18 alkyl.
5. The composition of claim 4 , wherein Q is phosphorus.
6. The composition of claim 1 , wherein the polysiloxane-polyether copolymer comprises the structure:
wherein n is about 3 to about 5000; R 9 , R 10 , R 11 , R 12 , R 13 , R 14 are each independently hydrogen, C 1 –C 20 alkyl, C 6 –C 12 aryl, (C 1 –C 20 alkyl)C 6 –C 12 aryl, (C 6 –C 12 aryl)C 1 –C 20 alkyl, C 1 –C 20 alkoxy, or polyether group, wherein at least one of R 9 , R 10 , R 11 , R 12 , R 13 , or R 14 is a polyether group.
7. The composition of claim 6 , wherein R 9 , R 14 , or both are polyethers.
8. The composition of claim 6 , wherein R 10 , R 11 , R 12 , R 13 or a combination of the foregoing are polyethers.
9. The composition of claim 1 , wherein the polysiloxane-polyether copolymer is
wherein x, and z independently range from 0 to about 50; y is 1 to about 50; R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 , R 25 , and R 26 are each independently hydrogen, C 1 –C 20 alkyl, C 6 –C 12 aryl, (C 1 –C 20 alkyl)C 6 –C 12 aryl, (C 6 –C 12 aryl)C 1 C 20 alkoxy, or polyether group wherein at least one of R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 , R 25 , and R 26 is a polyether group.
10. The composition of claim 1 , further comprising a sulfonate alkali metal salt.
11. A method for making a permanently antistatic article, comprising:
melt mixing about 100 parts by weight of a polycarbonate, an aromatic polycarbonate, a (co)polyestercarbonate, an aromatic (co)polyestercarbonate, blends about 0.1 to about 10 parts by weight of an antistatic agent, and about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer to form a blend; and
molding the blend to form an article.
12. A sheet or film of a thermoplastic resin composition, comprising:
about 100 parts by weight of a polycarbonate, an aromatic polycarbonate, a (co)polyestercarbonate, an aromatic (co)polyestercarbonate, or combinations thereof;
about 0.1 to about 10 parts by weight of an sulfonic acid salt antistatic agent; and
about 0.1 to about 10 parts by weight of a polysiloxane-polyether copolymer.
13. An article prepared by the sheet or film of claim 12 .
14. An article prepared from the composition of claim 1 .