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US 12,180,365 B2Granted
Extruded capacitor films with high temperature performance, methods of manufacture, and articles containing the same
AssigneeShpp Global Technologies B.V.
InventorsJames Alan Mahood, Matthew Frank Niemeyer
Life of this patent
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Abstract
A composition includes 65.0-99.85 wt % of a high heat copolycarbonate, the high heat copolycarbonate further having a number ratio of carbon atoms to a total of hydrogen, oxygen, and fluorine atoms of less than 1.12, preferably from 0.83 to less than 1.12; 0.05-0.5 wt % of a first roughening agent; and 0.1-15.0 wt % of an organic slip agent, wherein the organic slip agent comprises pentaerythritol tetrastearate, dipentaerythritol hexastearate, glycerol tristearate, high density poly(ethylene), polymethylpentene, a poly(carbonate-siloxane), or a combination thereof; wherein each amount is based on the total weight of the composition and totals 100 wt %.
Claims25
An extruded film comprising a composition, comprising:
- 65.0-99.85 wt % of a high heat copolycarbonate comprising
- low heat bisphenol groups derived from a low heat monomer where the corresponding homopolycarbonate of the monomer has a Tg of lower than 155° C., determined according to ASTM E1640-13 with a 1° C./min heating rate, and
- high heat bisphenol groups derived from a high heat bisphenol monomer where the corresponding homopolycarbonate of the monomer has a Tg of 155° C. or higher, determined according to ASTM E1640-13 with a 1° C./min heating rate,
- the high heat copolycarbonate further having a number ratio of carbon atoms to a total of hydrogen, oxygen, and fluorine atoms of less than 1.12;
- 0.1-15.0 wt % of an organic slip agent, wherein the organic slip agent comprises pentaerythritol tetrastearate, dipentaerythritol hexastearate, glycerol tristearate, high density poly(ethylene), polymethylpentene, a poly(carbonate-siloxane), or a combination thereof;
- 0.05-0.5 wt % of a roughening agent comprising a particulate, crosslinked silicone;
- and
- optionally, 1.0-50.0 wt % of a bisphenol A homopolymer comprising a weight average molecular weight of 19,000-21,000 Daltons, as measured by gel permeation chromatography (GPC), using a crosslinked styrene-divinylbenzene column and calibrated to bisphenol A homopolycarbonate references,
- wherein each amount is based on the total weight of the composition and totals 100 wt %, and
- wherein the extruded film has
- a glass transition temperature of 170-250° C. determined in accordance with ASTM E1640-13;
- and
- a Bosch Test clearing count of 0-10 at 300 V/μm.
10 more elements
A composition, comprising:
- 65.0-99.85 wt % of a high heat copolycarbonate comprising
- low heat bisphenol groups derived from a low heat monomer where the corresponding homopolycarbonate of the monomer has a Tg of lower than 155° C., determined according to ASTM E1640-13 with a 1° C./min heating rate, and
- high heat bisphenol groups derived from a high heat bisphenol monomer where the corresponding homopolycarbonate of the monomer has a Tg of 155° C. or higher, determined according to ASTM E1640-13 with a 1° C./min heating rate,
- the high heat copolycarbonate further having a number ratio of carbon atoms to a total of hydrogen, oxygen, and fluorine atoms of less than 1.12;
- 0.1-15.0 wt % of an organic slip agent, wherein the organic slip agent comprises pentaerythritol tetrastearate, dipentaerythritol hexastearate, glycerol tristearate, high density poly(ethylene), polymethylpentene, a poly(carbonate-siloxane), or a combination thereof;
- and
- 0.05-0.5 wt % of a first roughening agent comprising a particulate, crosslinked silicone;
- wherein each amount is based on the total weight of the composition and totals 100 wt %;
- and
- a second roughening agent in an amount of 2.0-10.0 wt %, based on the total weight of the composition, wherein the second roughening agent comprises a cyclic olefin copolymer.
7 more elements
A composition, comprising:
- 65.0-99.85 wt % of a high heat copolycarbonate comprising
- low heat bisphenol groups derived from a low heat monomer where the corresponding homopolycarbonate of the monomer has a Tg of lower than 155° C. determined according to ASTM E1640-13 with a 1° C./min heating rate, and
- high heat bisphenol groups derived from a high heat bisphenol monomer where the corresponding homopolycarbonate of the monomer has a Tg of 155° C. or higher, determined according to ASTM E1640-13 with a 1° C./min heating rate,
- the high heat copolycarbonate further having a number ratio of carbon atoms to a total of hydrogen, oxygen, and fluorine atoms of less than 1.12;
- wherein the high heat copolycarbonate comprises a 3,3,5-trimethylcyclohexanone bisphenol-bisphenol A copolycarbonate;
- 0.1-15.0 wt % of an organic slip agent, wherein the organic slip agent comprises pentaerythritol tetrastearate, dipentaerythritol hexastearate, glycerol tristearate, high density poly(ethylene), polymethylpentene, a poly(carbonate-siloxane), or a combination thereof;
- and
- 0.05-0.5 wt % of a roughening agent comprising a particulate, crosslinked silicone;
- wherein each amount is based on the total weight of the composition and totals 100 wt %.
6 more elements
Dependencies are inferred from the claim text.