Ionizing radiation resistant polycarbonate resin composition and article comprising the same

Patent metadata

Field	Value
Publication number	US-10144826-B2
Application number	US-201615078219-A
Country	US
Kind code	B2
Filing date	Mar 23, 2016
Priority date	Apr 13, 2015
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

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;
about 0.6 parts by weight to about 5 parts by weight of a polyalkylene glycol compound; and
about 0.0001 parts by weight to about 0.05 parts by weight of an organic-inorganic hybrid pigment comprising at least one of a phthalocyanine compound and an azo compound, each based on about 100 parts by weight of the polycarbonate resin,
wherein the polycarbonate resin composition has a yellow index (YI) of about −1 to about 1 after irradiation with gamma rays, as measured in accordance with ASTM D1925-70(1988) 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 a phthalocyanine and 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.

3. The polycarbonate resin composition according to claim 1 , wherein the azo compound is an azo lake pigment.

4. 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.

5. The polycarbonate resin composition according to claim 4 , 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.

6. 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 D2244-16 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 D1003-13 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for about 7 days.

7. 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 D256-10e1 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.

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

9. The molded article according to claim 8 , wherein the molded article is an ionizing radiation resistant medical supply article.

Assignees

• Lotte Advanced Mat Co Ltd

Inventors

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

Classifications

• C08L71/02

  Polyalkylene oxides · CPC title

• C08K5/1515

  Three-membered rings · CPC title

• C08K5/0041

  Optical brightening agents, organic pigments · CPC title

• C08L69/00 Primary

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