Thermoplastic composition, articles thereof, and method of making the articles
View Patent ↗A thermoplastic composition comprises greater than or equal to about 60 wt. % polycarbonate; and about 10 wt. % to about 40 wt. % of a polyimide; wherein weight percents are based on a total weight of the thermoplastic composition.
1. A thermoplastic composition comprising:
greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl)propane;
about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units;
about 1 wt. % to about 20 wt. % of a polyimide-siloxane copolymer; and
an anti-drip agent;
wherein weight percents are based on a total weight of the thermoplastic composition, and further wherein a sample of the composition passes ASTM E162.
2. The thermoplastic composition of claim 1 , wherein the polyimide is polyetherimide.
3. The thermoplastic composition of claim 2 , wherein the polycarbonate is present in an amount of about 60 wt. % to about 90 wt. %.
4. The thermoplastic composition of claim 2 , wherein the polycarbonate is present in an amount of about 70 wt. % to about 80 wt. %, and wherein the polyetherimide is present in an amount of about 15 wt. % to about 30 wt. %.
5. The thermoplastic composition of claim 1 , wherein the thermoplastic composition has a 60 degree gloss measurement of less than or equal to about 30 as measured by ASTM D523.
6. The thermoplastic composition of claim 5 , wherein the 60 degree gloss measurement is about 4 to about 30.
7. The thermoplastic composition of claim 6 , wherein the 60 degree gloss measurement is about 10 to about 20.
8. The thermoplastic composition of claim 1 , further comprising about 1 wt. % to about 10 wt. % of the polyimide-polysiloxane copolymer.
9. The thermoplastic composition of claim 1 , wherein each of the polycarbonate and the polyimide are recycled resins, wherein the recycled resins are present in an amount of about 75 wt. % to about 90 wt. %, wherein weight percents are based on a total weight of the thermoplastic composition.
10. An article comprising:
a thermoplastic composition comprising greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane; about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units: about 1 wt. % to about 20 wt. % of a polymide-siloxane copolymer; and an anti-drip agent, wherein weight percents are based on a total weight of the thermoplastic composition, and further wherein a sample of the composition passes ASTM E162.
11. The article of claim 10 , wherein the article comprises multiple layers.
12. The article of claim 10 , wherein the polyimide is polyetherimide.
13. The article of claim 12 , wherein the polycarbonate is present in an amount of about 60 wt. % to about 90 wt. %.
14. The article of claim 12 , wherein the polycarbonate is present in an amount of about 70 wt. % to about 80 wt. %, and wherein the polyetherimide is present in an amount of about 15 wt. % to about 30 wt. %.
15. The article of claim 10 , wherein the thermoplastic composition has a 60 degree gloss measurement of less than or equal to about 30 as measured by ASTM D523.
16. The article of claim 10 , wherein the 60 degree gloss measurement is about 4 to about 30.
17. The article of claim 10 , wherein the 60 degree gloss measurement is about 10 to about 20.
18. The article of claim 10 , wherein each of the polycarbonate and the polyimide are recycled resins, and wherein the recycled resins are present in an amount of about 75 wt. % to about 90 wt. %, wherein weight percents are based on a total weight of the thermoplastic composition.
19. The article of claim 10 , wherein the thermoplastic composition has a color delta F measurement as measured per ASTM D224 after 500 hours weathering per ASTM G155.
20. A method of making an article comprising:
forming a film comprising greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane; about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units; about 1 wt. % to about 20 wt. % of a polymide-siloxane copolymer; and an anti-drip agent, wherein weight percents are based on a total weight of the thermoplastic composition, and further wherein a sample of the composition passes ASTM E162; and
thermoforming the film to form the article.
21. The method of claim 20 , wherein the polycarbonate is present in an amount of about 70 wt. % to about 80 wt. %, and wherein the polyetherimide is present in an amount of about 20 wt. % to about 30 wt. %.
22. The method of claim 20 , wherein after thermoforming the article comprises a 60 degree gloss measurement of less than or equal to about 25 as measured at 60 degrees following ASTM D523.
23. A method of making an article comprising:
co-extruding a core layer and cap layer to form a multi-layer film, wherein the core layer comprises greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane, about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units, about 1 wt. % to about 20 wt. % of a polyimide-siloxane copolymer, and an anti-drip agent, wherein weight percents are based on a total weight of the core layer, and further wherein a sample of the composition passes ASTM E162; and
thermoforming the multi-layer film to form the article.
24. The method of claim 22 , wherein the core layer and the cap layer are co-extruded in a single manifold.
25. The method of claim 22 , wherein each of the polycarbonate and the polyimide are recycled resins, and wherein the recycled resins are present in an amount of about 75 wt. % to about 90 wt. % wherein weight percents are based on a total weight of the thermoplastic composition.
26. The method of claim 22 , further comprising texturing a surface of the multi-layer film.
27. A thermoplastic composition comprising
reaction products of greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane; about 10 wt. % to about 40 wt. % of a polyimide; about 1 wt. % to about 20 wt. % of a polyimide-siloxane copolymer; and an anti-drip agent; and wherein weight percents are based on a total weight of the thermoplastic composition; and further wherein a sample of the composition passes ASTM E162.
28. A thermoplastic composition consisting essentially of:
greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane;
about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units;
about 1 wt. % to about 20 wt. % of a polyimide-siloxane copolymer; and
an anti-drip agent;
wherein weight percents are based on a total weight of the thermoplastic composition: and further wherein a sample of the composition passes ASTM E162.
29. A thermoplastic composition consisting essentially of:
reaction products of greater than or equal to about 60 wt. % of a polycarbonate homopolymer comprising units derived from 2,2-bis(4-hydroxyphenyl) propane; about 10 wt. % to about 40 wt. % of a polyimide that does not contain siloxane units; about 1 wt. % to about 20 wt. % of a polyimide-siloxane copolymer; and an anti-drip agent; and wherein weight percents are based on a total weight of the thermoplastic composition; and further wherein a sample of the composition passes ASTM E162.