Transparent articles prepared from thermoplastic compositions having high flow and ductility, and method of preparing articles
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02B-003/00
G02B-007/00
출원번호
UP-0347060
(2008-12-31)
등록번호
US-7848025
(2011-01-31)
발명자
/ 주소
Hatano, Akira
Hoeks, Theodorus Lambertus
Karlik, Dennis
Kuriki, Ken
Malinoski, Jon M.
Maruvuda, Sriramakrishna
출원인 / 주소
Sabic Innovative Plastics IP B.V.
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
6인용 특허 :
5
초록▼
Disclosed herein is a camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate so
Disclosed herein is a camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. A method of making the camera lens, and a camera lens comprising a thermoplastic composition comprising a redistribution product of a poly(aliphatic ester)-polycarbonate, are also disclosed.
대표청구항▼
We claim: 1. A camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source,
We claim: 1. A camera lens comprising a thermoplastic composition comprising a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. 2. The camera lens of claim 1, wherein the poly(aliphatic ester)-polycarbonate copolymer has a weight average molecular weight of 16,000 to 19,000 g/mol, when measured by gel permeation chromatography using a crosslinked styrene-divinylbenzene column calibrated to polycarbonate standards. 3. The camera lens of claim 1, wherein the poly(aliphatic ester)-polycarbonate comprises 0.5 to 10 wt % soft-block ester units, based on the total weight of the poly(aliphatic ester)-polycarbonate. 4. The camera lens of claim 1, wherein the glass transition temperature of the poly(aliphatic ester)-polycarbonate is from 110 to 145° C. 5. The camera lens of claim 1, wherein the poly(aliphatic ester)-polycarbonate copolymer comprises ester units derived from an alpha, omega C10-12 aliphatic dicarboxylic acid or derivative thereof. 6. The camera lens of claim 1, wherein the alpha, omega C6-20 aliphatic dicarboxylic acid comprises sebacic acid, and the dihydroxyaromatic compound comprises bisphenol A. 7. The camera lens of claim 1, wherein the thermoplastic composition when molded into an article having a thickness of 3.2 mm, has a haze of less than or equal to 1.0 percent, when measured according to ASTM D1003-00. 8. The camera lens of claim 1, wherein the thermoplastic composition when molded into an article having a thickness of 3.2 mm, has a transmittance of greater than or equal to 85 percent, when measured according to ASTM D1003-00. 9. The camera lens of claim 1, wherein the thermoplastic composition, when molded into an article having a thickness of 3.2 mm, has a yellowness index (YI) of less than 4, when measured according to ASTM D1925-70. 10. The camera lens of claim 1, the thermoplastic composition further comprising a polycarbonate. 11. The camera lens of claim 10, wherein the thermoplastic composition comprises 50 to 99 wt % poly(aliphatic ester)-polycarbonate, and 1 to 50 wt % polycarbonate, based on the total weight of poly(aliphatic ester)-polycarbonate and any added polycarbonate. 12. The camera lens of claim 1, having an effective lens area of 5 to 100 mm2. 13. The camera lens of claim 1, having an effective lens area of 0.5 to 10 mm2. 14. The camera lens of claim 1, wherein the camera lens thickness is from 0.25 to 2.5 mm. 15. The camera lens of claim 1, wherein the camera lens is a spherical or aspherical lens having a focal point. 16. The camera lens of claim 15, wherein the spherical lens is a double-convex lens, double-concave lens, plano-convex lens, plano-concave lens, meniscus convex lens or meniscus concave lens. 17. The camera lens of claim 15, wherein the aspherical lens has an ellipsoidal, hyperbolic, or parabolic face. 18. An optical lens having a shaped surface, comprising a thermoplastic composition comprising: a) a first polymer that is a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units of the formula (8a) wherein m is 4 to 18; and b) optionally, a second polymer that is a polycarbonate, wherein the thermoplastic composition has a melt volume rate of 13 cc/10 min to 25 cc/10 min at 250° C. and under a load of 1.2Kg and a dwell time of 6 minutes, according to ASTM D1238-04, wherein an article molded from the thermoplastic composition and having a thickness of 3.2 mm has a haze of less than or equal to 1.0 percent, when measured according to ASTM D1003-00, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. 19. A method of making a camera lens, comprising molding a poly(aliphatic ester)-polycarbonate copolymer comprising soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 6 minutes, according to ASTM D1238-04, wherein the camera lens has an effective lens area of 0.5 to 100 mm2, and wherein an optical lens prepared by the method has precision dimensions that deviate by less than 400 nm from a reference standard when measured by three dimensional contact profilometry. 20. The method of claim 19, wherein successive optical lenses prepared by the method each have precision dimensions that deviate by less than 400 nm from a reference standard when measured by three dimensional contact measurement. 21. A camera lens comprising a thermoplastic composition, comprising a reaction product of a poly(aliphatic ester)-polycarbonate copolymer comprising 0.5 to 10 wt % soft block ester units derived from an alpha, omega C6-20 aliphatic dicarboxylic acid or derivative thereof, a dihydroxyaromatic compound, and a carbonate source, with a redistribution catalyst, wherein the thermoplastic composition has a melt volume rate of 13 to 25 cc/10 min at 250° C. and under a load of 1.2 Kg and a dwell time of 4 minutes, according to ISO 1133, and wherein the camera lens has an effective lens area of 0.5 to 100 mm2. 22. The camera lens of claim 21, wherein the redistribution catalyst is a tetra C1-6 alkylphosphonium hydroxide, C1-6 alkyl phosphonium phenoxide, or a combination comprising one or more of the foregoing catalysts. 23. The camera lens of claim 21, wherein the redistribution catalyst is present in an amount of 40 to 120 ppm. 24. The camera lens of claim 21, wherein the thermoplastic composition further comprises a poly(aliphatic ester)-polycarbonate copolymer comprising 0.5 to 10 wt % soft block ester units that has not been treated with a redistribution catalyst to form a reaction product.
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