Antistatic flame retardant resin compositions and methods and uses thereof
View Patent ↗Disclosed herein are compositions comprising polycarbonate-polysiloxane copolymer, polycarbonate, flame retardant additive, and an anti-static agent. Also disclosed are materials and devices made thereof. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
1. A composition comprising:
(a) a polycarbonate-polysiloxane copolymer, wherein the siloxane is present in the copolymer in an amount of about 13% by weight to about 50% by weight, and wherein the siloxane is present in the composition in an amount of about 0.8% by weight to about 9% by weight;
(b) a polycarbonate;
(c) an anti-static agent in an amount of about 4% by weight to about 19% by weight; and
(d) a flame retardant additive,
wherein the composition has an anti-static property of a half-life of less than about 60 seconds, the composition has flammability rating of V-0, and the composition has a notched IZOD impact rating of at least 300 J/m.
2. The composition of claim 1 , wherein the composition further comprises an anti-oxidant, a mold release agent, a filler or an anti-drip agent, or a mixture thereof.
3. The composition of claim 2 , wherein the anti-drip agent comprises PTFE.
4. The composition of claim 2 , wherein the anti-oxidant agent is present in an amount above 0% by weight to about 1.0% by weight of the composition.
5. The composition of claim 2 , wherein the mold release agent is present in an amount above 0% by weight to about 5% by weight of the composition.
6. The composition of claim 2 , wherein the filler is talc, mica, milled glass fiber, glass fiber, glass flakes, glass beads, wollastonite, whiskers, carbon fiber, carbon powder, or milled carbon fiber, or a combination thereof.
7. The composition of claim 2 , wherein the filler is present in an amount above 0% by weight to about 50% by weight of the composition.
8. The composition of claim 1 , wherein the polycarbonate-polysiloxane copolymer comprises
wherein x is from about 40 to about 60.
9. The composition of claim 1 , wherein the polycarbonate comprises an aromatic polycarbon having the formula:
wherein each R 8 independently is aryl, heteroaryl, aliphatic, or alicyclic, wherein at least 60% of the total number of R 8 groups are aromatic; and
wherein j is at least 2.
10. The composition of claim 1 , wherein the flame retardant additive is an aromatic phosphate compound of the formula:
wherein each R is independently alkyl, cycloalkyl, aryl, alkyl substituted aryl, halogen substituted aryl, aryl substituted alkyl, or halogen.
11. The composition of claim 1 , wherein the flame retardant additive is an- aromatic-phosphate, and phenyl bis(dodecyl) phosphate, phenyl bis(neopentyl) phosphate, phenyl bis(3,5,5-trimethylhexyl) phosphate, ethyl diphenyl phosphate, 2-ethylhexyl di(p-tolyl) phosphate, bis(2-ethylhexyl) p-tolyl phosphate, tritolyl phosphate, bis(2-ethylhexyl) phenyl phosphate, tri(nonylphenyl) phosphate, bis(dodecyl) p-tolyl phosphate, tricresyl phosphate, triphenyl phosphate, dibutyl phenyl phosphate, 2-chloroethyl diphenyl phosphate, p-tolyl bis(2,5,5′-trimethylhexyl) phosphate, 2-ethylhexyl diphenyl phosphate, or a combination thereof.
12. The composition of claim 1 , wherein the flame retardant additive is resorcinol bis(diphenyl phosphate), bisphenol A bis(diphenyl phosphate), N,N′-bis[di-(2,6-xylyl)phosphoryl]-piperazine, or a combination thereof.
13. The composition of claim 1 , wherein the composition has an anti-static property of a half-life of less than 10 seconds.
14. An article of manufacture comprising the composition of claim 1 .
15. The article of manufacture of claim 14 , wherein the article of manufacture is a housing or internal part for a TV, notebook, laptop, personal computer (PC), cellular phone, telephone, tablet, copier, printer, projector, automated teller machine (ATM) or advanced media data storage, memory device, air conditioner, vacuum cleaner, game machine, or electric tool.
16. A method of manufacturing a composition comprising extruding a mixture of:
(a) a polycarbonate-polysiloxane copolymer, wherein the siloxane is present in the copolymer in an amount of about 13% by weight to about 50% by weight, and wherein the siloxane is present in the composition in an amount of about 0.8% by weight to about 9% by weight;
(b) a polycarbonate;
(c) an anti-static agent in an amount of about 4% by weight to about 19% by weight; and
(d) a flame retardant additive
wherein the composition has an anti-static property of a half-life of less than 60 seconds, the composition has flammability rating of V-0, and the composition has a notched IZOD impact rating of at least 300 J/m.