Unlock instant, AI-driven research and patent intelligence for your innovation.

Monovinylaromatic conjugated diene block copolymer and polymer composition containing same and monovinylaromatic acrylate copolymer

A monovinyl aromatic, block copolymer technology, applied in the field of styrene-methyl methacrylate copolymer, polymer blends, styrene butadiene block copolymer, can solve the problem of increasing vitrification Problems such as transition temperature and damage to the thermal stability of block copolymers

Active Publication Date: 2018-08-10
STYROLUTION GRP
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high 1,2-vinyl content impairs the thermal stability of the corresponding block copolymer and increases its glass transition temperature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Monovinylaromatic conjugated diene block copolymer and polymer composition containing same and monovinylaromatic acrylate copolymer
  • Monovinylaromatic conjugated diene block copolymer and polymer composition containing same and monovinylaromatic acrylate copolymer
  • Monovinylaromatic conjugated diene block copolymer and polymer composition containing same and monovinylaromatic acrylate copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0115] Embodiment 1: preparation styrene butadiene block copolymer (SBC)

Embodiment 1-5

[0117] The structure is 1-S2-B1-(S3 / B2) 1 -(S3 / B2) 2 -(S3 / B2) 3 -S4 (polymer chain 1) and S2-B1-(S3 / B2) 1 -(S3 / B2) 2 -(S3 / B2) 3 - The linear styrene-butadiene block copolymer (SBC) of S4 (polymer chain 2) is obtained by sequential anionic polymerization of styrene and butadiene at 60-90° C. in cyclohexane as solvent. The ratio of initiator BuLi (BuLi1) of polymer chain 1 to initiator BuLi (BuLi2) of polymer chain 2 was 1:2.3. Polymer chains 1 and 2 were coupled with Dehysol D82. Thus, the following SBC block copolymers are obtained:

[0118]

Embodiment 5

[0120] S1: The stirred reactor was initially charged with 4786 ml of cyclohexane and 6.7 ml (9.39 mmol) of a 1.4 molar solution of sec-butyllithium (in n-hexane / cyclohexane) (BuLi1) as initiator. The mixture has been titrated with about 1.6 ml of a 1,4 molar sec-butyllithium solution at 50° C. until a light red color appears. The amount of 321.28 g (354 ml) of styrene required for the preparation of block 1 was metered in. The highest temperature is 72.2°C. Sample 1 (7.92% solids) was taken.

[0121] S2: After all the styrene has been dissolved in 15.4 ml (21.60 mmol) of a 1.4 molar solution of sec-butyllithium (n-hexane / cyclohexane) (BuLi2), 379.04 g (418 ml) of amount of styrene. The highest temperature is 74.9°C. Sample 2 was taken (15.80% solids).

[0122] B1: After all the styrene has dissolved, add butadiene in the amount of 80 g (122 ml) required to prepare block B1. The highest temperature is 74.9°C. Sample 3 (17.29% solids) was taken.

[0123] S3 / B2: After all...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hazeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to novel block copolymers comprising at least one monovinylaromatic monomer (also known as monovinylarene) and at least one conjugated diene monomer, in particular to styrene butadiene blocks Copolymers (SBC) with defined block structures. The invention also relates to polymer blends comprising at least one block copolymer and at least one monovinylarene acrylate copolymer, in particular a styrene-methyl methacrylate copolymer. Related methods of making and articles made from the polymer blends are also provided.

Description

technical field [0001] The present invention relates to novel block copolymers comprising at least one monovinylaromatic monomer (also known as monovinylarene) and at least one conjugated diene monomer, particularly styrene butadiene block copolymers. Segment copolymers (SBC) with defined block structures. The invention also relates to polymer blends comprising at least one block copolymer and at least one monovinylarene acrylate copolymer, in particular styrene-methyl methacrylate copolymer (SMMA). Related methods of making and articles made from the polymer blends are also provided. Background technique [0002] Monovinylarene conjugated diene copolymers, especially styrene butadiene block copolymers (SBC) are known and useful for a variety of purposes. It is known to combine polystyrene with SBC copolymers to achieve impact modified polystyrene. Block copolymers of styrene and butadiene are described, for example, in WO 2000 / 58380, WO 1995 / 35335 and US 4,939,208. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F257/02C08F279/04C08L53/02C08F297/04
CPCC08F297/04C08L25/14C08L53/02C08F293/005C08L2201/08C08L2205/06
Inventor 诺伯特·尼斯内克里斯托弗·马勒康拉德·诺尔汤姆斯·W·科克伦
Owner STYROLUTION GRP