Thermoplastic resin composition and article produced thereform

Patent metadata

Field	Value
Publication number	US-10472490-B2
Application number	US-201715790334-A
Country	US
Kind code	B2
Filing date	Oct 23, 2017
Priority date	Oct 25, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes about 100 parts by weight of a thermoplastic resin and about 0.5 to about 30 parts by weight of zinc oxide. The zinc oxide has a peak intensity ratio (B/A) of about 0.1 to about 1.0, wherein A indicates a peak in the wavelength range of 370 nm to 390 nm and B indicates a peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement. The thermoplastic resin composition can exhibit good properties in terms of weather resistance, antibacterial properties, and the like.

First claim

What is claimed is:

1. A thermoplastic resin composition comprising:
about 100 parts by weight of a thermoplastic resin; and
about 0.5 to about 30 parts by weight of zinc oxide, the zinc oxide having a peak intensity ratio (B/A) of about 0.1 to about 1.0,
wherein A indicates intensity of the peak in the wavelength range of 370 nm to 390 nm and B indicates intensity of the peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement.

2. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has a peak position degree (20) in the range of 35° to 37° and a crystallite size of about 1,000 Å to about 2,000 Å in analysis of X-ray diffraction (XRD), as calculated by Equation 1:

Crystallite
⁢

⁢

⁢
size
⁢

⁢

(
D
)

=

K
⁢
λ

βcosθ

,

[

Equation
⁢

⁢
1

]

wherein, K is a shape factor, λ is an X-ray wavelength, β is an FWHM value (degree) of an X-ray diffraction peak, and θ is a peak position degree.

3. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide is prepared by melting zinc particles in a reactor, heating the molten zinc to about 850° C. to about 1,000° C. to vaporize the molten zinc, injecting oxygen gas into the reactor, cooling the reactor to about 20° C. to about 30° C., and heating the reactor to about 400° C. to about 900° C. for about 30 minutes to about 150 minutes.

4. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin comprises at least one of a rubber-modified vinyl-based copolymer resin, an aromatic vinyl resin, a polyolefin resin, a polycarbonate resin, a poly(alkyl (meth)acrylate) resin, a polyester resin, and a polyamide resin.

5. The thermoplastic resin composition according to claim 4 , wherein the rubber-modified vinyl-based copolymer resin comprises a rubber-modified vinyl graft copolymer and an aromatic vinyl copolymer resin.

6. The thermoplastic resin composition according to claim 5 , wherein the rubber-modified vinyl graft copolymer is prepared by graft polymerization of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer to a rubber polymer.

7. The thermoplastic resin composition according to claim 5 , wherein the aromatic vinyl copolymer resin is a polymer of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer.

8. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has a peak intensity ratio (B/A) of about 0.2 to about 1.0 in photoluminescence measurement.

9. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has a peak intensity ratio (B/A) of about 0.2 to about 0.7 in photoluminescence measurement.

10. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has an average particle diameter (D50) of about 0.5 μm to about 3 μm, as measured by a particle analyzer.

11. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has an average particle diameter (D50) of about 1 μm to about 3 μm, as measured by a particle analyzer.

12. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has a BET specific surface area of about 10 m 2 /g or less, as measured by a nitrogen gas adsorption method using a BET analyzer.

13. The thermoplastic resin composition according to claim 1 , wherein the zinc oxide has a BET specific surface area of about 1 m 2 /g to about 7 m 2 /g, as measured by a nitrogen gas adsorption method using a BET analyzer.

14. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a color variation (ΔE) of about 2 to about 12, as calculated according to Equation 2:

Color
⁢

⁢
variation
⁢

⁢

(

Δ
⁢
E

)

=

(

Δ
⁢
L

*

)

2

+

(

Δ
⁢
a

*

)

2

+

(

Δ
⁢
b

*

)

2

Assignees

• Lotte Advanced Mat Co Ltd

Inventors

• Yang Cheon Seok
• Kim Yoen Kyoung
• Bae Seung Yong
• Kim Ju Sung

Classifications

• G01N23/20

  by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials · CPC title

• C08F20/18

  with acrylic or methacrylic acids · CPC title

• C08K2201/006

  Additives being defined by their surface area · CPC title

• C08K2003/2296

  of zinc · CPC title

• C08K3/22 Primary

  of metals · CPC title