Thermoplastic resin and thermoplastic resin composition including the same

Patent metadata

Field	Value
Publication number	US-2017260300-A1
Application number	US-201615528487-A
Country	US
Kind code	A1
Filing date	Aug 31, 2016
Priority date	Aug 31, 2015
Publication date	Sep 14, 2017
Grant date	—

Abstract

The present invention relates to a thermoplastic resin. In accordance with the present invention, a thermoplastic resin exhibiting superior heat resistance, gloss, and whiteness while having mechanical properties identical to or higher than those of a conventional thermoplastic resin and a thermoplastic resin composition including the same are provided.

First claim

1 . A thermoplastic resin, comprising an α-methyl styrene-vinyl cyan compound copolymer and a compound represented by Formula 1 below:
A o (Si n O 2n+1 ) p   [Formula 1]

wherein A is a divalent or trivalent metal, n is an integer of 1 to 100, and each of o and p is an integer of 1 to 5.

2 . The thermoplastic resin according to claim 1 , wherein the compound represented by Formula 1 is an in-situ compound generated by reacting a water-soluble silicate compound and a metal salt coagulant in the α-methyl styrene-vinyl cyan compound copolymer.

3 . The thermoplastic resin according to claim 1 , wherein
the compound represented by Formula 1 has a solubility in water of 0.001 to 0.1%.

4 . The thermoplastic resin according to claim 1 , wherein
the compound represented by Formula 1 is comprised in an amount of 0.0001 to 2 parts by weight based on 100 parts by weight of the α-methyl styrene-vinyl cyan compound copolymer.

5 . The thermoplastic resin according to claim 2 , wherein the vinyl cyan compound is one or more selected from the group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile, and derivatives thereof.

6 . The thermoplastic resin according to claim 2 , wherein the α-methyl styrene is comprised in an amount of 45 to 80% by weight, and the vinyl cyan compound is comprised in an amount of 15 to 50% by weight.

7 . The thermoplastic resin according to claim 2 , wherein the α-methyl styrene-vinyl cyan compound further comprises 1 to 15% by weight of an aromatic vinyl compound (except for α-methyl styrene).

8 . The thermoplastic resin according to claim 2 , wherein the water-soluble silicate compound is a linear silicate compound represented by Formula 2 below:
M 2 (Si n O 2n+1 )   [Formula 2]
wherein M is an alkali metal and n is an integer of 1 to 100.

9 . The thermoplastic resin according to claim 2 , wherein the water-soluble silicate compound is sodium silicate (Na 2 SiO 3 ) or potassium silicate (K 2 SiO 3 ).

10 . The thermoplastic resin according to claim 2 , wherein the water-soluble silicate compound is comprised in an amount of 0.01 to 20 parts by weight based on 100 parts by weight of the α-methyl styrene-vinyl cyan compound copolymer.

11 . The thermoplastic resin according to claim 2 , wherein the metal salt coagulant is a metal salt coagulant represented by Formula 3 below:
A m X s   [Formula 3]
wherein A is a divalent or trivalent metal, X is a halogen element or a sulfate ion, m is an integer of 1 to 5, and s is an integer of 1 to 5.

12 . The thermoplastic resin according to claim 2 , wherein the metal salt coagulant is one or more selected from the group consisting of calcium chloride, magnesium sulphate and aluminum sulphate.

13 . The thermoplastic resin according to claim 2 , wherein the metal salt coagulant is comprised in an amount of 0.01 to 20 parts by weight based on 100 parts by weight of the α-methyl styrene-vinyl cyan compound copolymer.

14 . A thermoplastic resin composition, comprising the thermoplastic resin of claim 1 and a vinyl cyan compound-conjugated diene based compound-vinyl aromatic compound copolymer resin.

15 . The thermoplastic resin composition according to claim 14 , wherein the thermoplastic resin composition comprises 50 to 90% by weight of the thermoplastic resin and 10 to 50% by weight of the vinyl cyan compound-conjugated diene based compound-vinyl aromatic compound copolymer resin.

16 . The thermoplastic resin composition according to claim 14 , wherein the thermoplastic resin composition has a gloss of 89.5 or more.

17 . The thermoplastic resin composition according to claim 14 , wherein the thermoplastic resin composition has a whiteness index (WI) of 28 or more.

Assignees

• Lg Chemical Ltd

Inventors

• Hong Sung Won
• Lee Hyung Sub
• Ju Min Cheol
• Shin Min Seung
• Kim In Soo

Classifications

• C08F212/12

  Monomers containing a branched unsaturated aliphatic radical or a ring substituted by an alkyl radical · CPC title

• C08K3/34

  Silicon-containing compounds · CPC title

• C08L25/16 Primary

  Homopolymers or copolymers of alkyl-substituted styrenes · CPC title

• C08C1/15 Primary

  characterised by the coagulants used · CPC title

• C08F6/22 Primary

  Coagulation · CPC title