Resin blend

Patent metadata

Field	Value
Publication number	US-9650511-B2
Application number	US-201414506210-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Nov 25, 2011
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

Provided is a resin blend including a first resin and a second resin, the second resin having a hydrophobic functional group in a side chain and having a surface energy difference of 0.1 to 20 mN/m from the first resin at 25° C., wherein the resin blend is capable of forming a layer separation structure. Also, provided are a pellet, a method for preparing the same, and a resin molding article having a specific layer separation structure. The resin blend may not only improve mechanical properties and surface hardness of the molding article but also shorten process time, increase productivity and reduce production cost by omitting an additional surface coating step.

First claim

The invention claimed is:

1. A resin blend comprising:
a first resin; and
a second resin having a surface energy difference of 5 to 20 mN/m from the first resin at 25° C., wherein the first resin is an ABS resin and the second resin is a (meth)acrylate-based resin having a hydrophobic polysiloxane functional group in a side chain, wherein the ABS resin and the (meth)acrylate-based resin have a melt viscosity difference of 300-500 pa*s at a shear rate of 100 to 1000 s −1 and at a temperature of 210 to 240° C., wherein the second resin has a molecular weight distribution of 1.9 to 2.6 and is a polymer polymerized from a monomer blend containing 0.1 to 30 parts by weight of a monomer represented by the following Chemical Formula 1 as a polymerization unit based on 100 parts by weight of the entire monomer for polymerizing the second resin:

wherein, R 3 is an alkyl group having 1 to 16 carbon atoms, R 4 is a single bond or an alkylene group having 1 to 16 carbon atoms, Q is a single bond, —COO—, —OCO—, —OCOO—, —CO—, —O— or —NH—, R 5 to R 7 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms, R a to R f are each independently an alkyl group having 1 to 16 carbon atoms, and n is a number from 1 to 100, and
wherein the resin blend forms a layer separation structure during a melt processing performed under shear rate of 100 to 1000 s −1 .

2. The resin blend of claim 1 , wherein the second resin has higher glass transition temperature than the first resin and the first resin and the second resin have a glass transition temperature difference of 10° C. to 150° C.

3. The resin blend of claim 1 , wherein the second resin has a weight average molecular weight of 30,000 to 200,000.

4. The resin blend of claim 1 , wherein the second resin further includes at least one organic functional group selected from a group consisting of an alkyl group having 2 to 20 carbon atoms, an alicyclic ring having 5 to 40 carbon atoms, and an aromatic ring having 6 to 40 carbon atoms.

5. The resin blend of claim 1 , wherein the second resin further includes a hydrogen bond donor and a hydrogen bond acceptor.

6. A method of preparing a resin molding article comprising: melting the resin blend of claim 1 to form a melt blend; and processing the melt blend to form a layer separation structure.

7. The method of preparing a resin molding article of claim 6 , further comprising curing the layer separation structure of the resin blend.

8. The method of preparing a resin molding article of claim 6 , wherein the melting and the processing are performed under shear stress.

9. The method of preparing a resin molding article of claim 7 , wherein the curing is thermosetting or ultraviolet (UV) curing.

10. A resin molding article having a layer separation structure comprising:
a first resin layer including the first resin of claim 1 ;
a second resin layer including the second resin of claim 1 formed on the first resin layer; and
an interface layer comprising the resin blend of claim 1 formed between the first resin layer and the second resin layer, wherein the layer separation structure is formed during a melt processing of the resin blend of claim 1 performed under shear rate of 100 to 1000 s −1 .

11. The resin molding article having a layer separation structure of claim 10 , wherein components of the first resin layer are detected on the surface of the second resin layer by an infrared spectrometer.

Assignees

• Lg Chemical Ltd

Inventors

• Yoo Houng Sik
• Ryu Jin Young
• Kim Woo Sung
• Lee Han Na
• Choi Eun Joo
• Choi Hyeon

Classifications

• C09D133/14 Primary

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09D133/18

  Homopolymers or copolymers of nitriles · CPC title

• Y10T428/31536

  Including interfacial reaction product of adjacent layers · CPC title

• C08F212/08

  Styrene · CPC title

• C08F283/12

  on to polysiloxanes · CPC title