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US 11,926,732 B2Granted
Non-bromine, non-chlorine flame retardant, glass filled polycarbonate with improved multi-axial impact strength
AssigneeSabic Global Technologies B.V.
InventorsSnezana Grcev, Joshua Arie van den Bogerd
Life of this patent
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Abstract
In various aspects, the disclosure relates to polycarbonate compositions exhibiting improved impact strength, both multi axial and notched Izod, as well as thin-walled flame resistance while free or substantially free of bromine or chlorine flame retardant additives. The polycarbonate compositions may comprise non-bonding glass fiber, butyl tosylate, and/or a phosphorous based stabilizer.
Claims18
A composition comprising:
- from about 70 wt. % to about 98 wt. % of a polycarbonate polymer component;
- from about 0.01 wt. % to about 1 wt. % of a flame retardant additive, wherein the flame retardant additive is free or substantially free of bromine and/or chlorine;
- from about 2 wt. % to about 20 wt. % of a non-bonding glass fiber;
- and
- from about 0.01 wt. % to about 5 wt. % of a stabilizer component wherein the stabilizer component comprises tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite (PEPQ),
- based on a total weight of the composition,
- wherein a molded sample formed from the composition exhibits a multi-axial impact (MAI) rating energy at max force of greater than about 60 Joules at 23 degrees Celsius (° C.) when tested in accordance with ISO6603 standard and wherein a molded sample of the composition achieves a V2 rating at a thickness of about 0.8 mm UL 94.
4 more elements
A composition of comprising:
- from about 70 wt. % to about 98 wt. % of a polycarbonate polymer component;
- from about 0.01 wt. % to about 1 wt. % of a flame retardant additive, wherein the flame retardant additive is free or substantially free of bromine and/or chlorine;
- from about 2 wt. % to about 20 wt. % of a non-bonding glass fiber;
- and
- from about 0.01 wt. % to about 5 wt. % of a stabilizer component wherein the stabilizer component comprises one or more of bis (2,4-dicumylphenyl) pentaerythritol diphosphite or tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite (PEPQ),
- based on a total weight of the composition,
- wherein a molded sample formed from the composition exhibits a multi-axial impact (MAI) rating energy at max force of greater than about 60 Joules at 23 degrees Celsius (° C.) when tested in accordance with ISO6603 standard and wherein a molded sample of the composition achieves a V2 rating at a thickness of about 0.8 mm UL 94,
- wherein the flame retardant additive comprises potassium perfluorobutanesulfonate.
5 more elements
A composition comprising:
- from about 70 wt. % to about 98 wt. % of a polycarbonate polymer component;
- from about 0.01 wt. % to about 1 wt. % of a flame retardant additive, wherein the flame retardant additive is free or substantially free of bromine and/or chlorine;
- from about 2 wt. % to about 20 wt. % of a non-bonding glass fiber;
- and
- from about 0.01 wt. % to about 5 wt. % of a stabilizer component wherein the stabilizer component comprises one or more of bis (2,4-dicumylphenyl) pentaerythritol diphosphite or tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite (PEPQ),
- wherein a molded sample formed from the composition exhibits a multi-axial impact (MAI) rating energy at max force of greater than about 60 Joules at 23 degrees Celsius (° C.) when tested in accordance with ISO6603 standard and wherein a molded sample of the composition achieves a V2 rating at a thickness of about 0.8 mm UL 94, and
- wherein the non-bonding glass fiber has
- a width of from about 10 micrometer (μm) to about 15 μm,
- a length of from about 2 mm to about 6 mm,
- a diameter or a width of about 13 μm and a length of 4 mm, or
- a combination thereof.
8 more elements
Dependencies are inferred from the claim text.