Ionizing Radiation Resistant Polycarbonate Resin Composition and Article Comprising the Same

Patent metadata

Field	Value
Publication number	US-2016297964-A1
Application number	US-201615078219-A
Country	US
Kind code	A1
Filing date	Mar 23, 2016
Priority date	Apr 13, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

A polycarbonate resin composition includes: a polycarbonate resin; a polyalkylene glycol compound; and an organic-inorganic hybrid pigment, and has a yellow index (YI) of about −2 to about 4 after irradiation with gamma rays, as measured in accordance with ASTM D1925 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for 7 days. The polycarbonate resin composition can exhibit excellent properties in terms of color and impact resistance after being irradiated with ionizing radiation.

First claim

What is claimed is:

1 . A polycarbonate resin composition comprising:
a polycarbonate resin; a polyalkylene glycol compound; and an organic-inorganic hybrid pigment, wherein the polycarbonate resin composition has a yellow index (YD of about −2 to about 4 after irradiation with gamma rays, as measured in accordance with ASTM D1925 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for 7 days.

2 . The polycarbonate resin composition according to claim 1 , wherein the organic-inorganic hybrid pigment comprises at least one of a phthalocyanine compound and an azo compound.

3 . The polycarbonate resin composition according to claim 2 , wherein the phthalocyanine compound comprises a compound represented by Formula 1:

wherein, M is copper, iron, nickel, cobalt, manganese, aluminum, palladium, tin, lead, titanium, rubidium, terbium, cerium, lanthanum, or zinc; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are the same or different and are each independently a hydrogen atom, a halogen atom, or a C 1 to C 10 hydrocarbon group.

4 . The polycarbonate resin composition according to claim 2 , wherein the azo compound is an azo lake pigment.

5 . The polycarbonate resin composition according to claim 1 , comprising the polyalkylene glycol compound in an amount of about 0.6 parts by weight to about 5 parts by weight, and the organic-inorganic hybrid pigment in an amount of about 0.0001 parts by weight to about 0.05 parts by weight, each based on about 100 parts by weight of the polycarbonate resin.

6 . The polycarbonate resin composition according to claim 1 , further comprising:
an epoxy ester compound represented by Formula 2:

wherein, R 17 and R 19 are the same or different and are each independently a C 1 to C 10 hydrocarbon group; R 18 and R 20 are the same or different and are each independently a hydrogen atom or a C 1 to C 10 hydrocarbon group; m and n are the same or different and are each independently 0 or 1; and m+n is 1 or 2, and wherein R 17 and R 18 are connected to one another to form a ring and R 19 and R 20 are connected to one another to form a ring.

7 . The polycarbonate resin composition according to claim 6 , comprising the epoxy ester compound in an amount of about 0.001 to about 3 parts by weight, based on about 100 parts by weight of the polycarbonate resin.

8 . The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin composition has a lightness (L*) of about 80 or higher after irradiation with gamma rays, as measured in accordance with ASTM D2244 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for about 7 days, and has a transmittance of about 80% or higher after irradiation with gamma rays, as measured in accordance with ASTM D1003 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for about 7 days.

9 . The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin composition has an Izod impact strength of about 70 kgf·cm/cm to about 90 kgf·cm/cm after irradiation with gamma rays, as measured in accordance with ASTM D256 after irradiating an about 3.2 mm thick Izod specimen with gamma rays at about 25 kGy and leaving the specimen for about 7 days.

10 . A molded article formed of the polycarbonate resin composition according to claim 1 .

11 . The molded article according to claim 10 , wherein the molded article is an ionizing radiation resistant medical supply article.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Hur Jong Chan
• Jang Hyun Hye
• Kwon O Sung
• Chi Jun Ho
• Chei Woo Suk

Classifications

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title

• C08K5/0041

  Optical brightening agents, organic pigments · CPC title

• C08K5/1515

  Three-membered rings · CPC title