ABS-Rubber

Main Features

BR277 rubber is a solution polymerized low cis star branched, low efficiency coupled, oil extended polybutadiene produced using alkyl lithium initiator in batch reactors.

Keys

BR 277 oil extended polybutadiene is used in tire compounds and in some mechanical good compounds.

 

Properties

Test Methods

Analytical Manual

Units

General

Mooney Viscosity

ASTM D1646

MPP16

ML1+4 @ 100°C

37 – 47

Bound Styrene

ASTM D5775

MPP5-MPP6

wt %

N/A

Block styrene

ASTM D3314

MPP8

wt %

N/A

Solution viscosity*

ASTM D5774

MPP9

cPs

N/A

Gel content

MPP12

arbitrary

N/A

Molecular weight

MPP1

KDalton

N/A

Coupling efficiency

MPP1

%

N/A

Volatile matter content

ASTM D5668

MPP10

wt %

0.3 max

Residual solvent

MPP18

ppm

N/A

Colour

ASTM E313

MPP13

Yellow index

N/A

Solution color (Pt/Co)

ASTM D1209

arbitrary

N/A

Vinyl content

MPP5-MPP6

wt % on butadiene

11 – 13

Ash content

ASTM D5667

MPP15

wt %

0.04

Solvent extractables

ASTM D5774

MPP11

wt %

26.3–29.3