METABLEN is the trade name of modifiers, which have been developed originally by MITSUBISHI RAYON CO., LTD., a world prominent manufacture of methylmethacrylate resins.
Adding a small quantity of METABLEN to various resins improves and increases their impact strength and processability, and further improves the characteristics, the appearance and the productivity of their final products.

METABLEN A type is an epoch-making processing aid for thermoplastics. With small amount of addition, it greatly improves the melt tension that is required in such processing as vacuum molding, foam molding, blow molding and profiling by minimizing increases in melt viscosity without sacrificing the inherent properties of thermoplastics.

Matrix Resin:Thermoplastics
Grade Type Effect Merit
A-3000 Processing aid
Anti-dripping agent
Melt tension
Die swell
Filler dispersibility
Foaming expansion ratio
Excellent appearance
Excellent treatment
High foaming expansion ratio
*Product is powder and PP/PE master batch.

METABLEN C, E, W and S type are a family of core-shell type impact modifiers, each of which offers unique benefits to manufacturers of thermoplastics products. These impact modifiers do not only improve impact strength but also give other additional benefits depending on the selection of rubber.
METABLEN C and E type have butadiene-based rubber to give super high impact strength.
METABLEN W type has acrylic-based rubber to give excellent weatherability.
METABLEN S type has silicone-acrylic-based rubber to achieve both super high impact strength and excellent weatherability.

Matrix Resin:
PC : Polycarbonate
PS : Polystyrene
PP : Polypropylene
PET : Polyethylene terephthalate
PVC : Polyvinyl chloride
PA : Polyamide
PE : Polyethylene
PBT : Polybutylene terephthalate
ABS : Acrylonitrile-Butadiene-Styrene resin
PMMA : Polymethyl methacrylate
Type Grade Characteristic Matrix Resin
S Silicone- acrylic rubber S-2001 Weatherability, High impact, Impact resistance at low temperature PC, PBT, PA, PET,PS, PVC, ABS, PMMA
SRK200 Heat resistance, Impact resistance at low temperature
SX-006 Coloring ability, Flowability, Chemical resistance
W Acrylic rubber W-450A High impact, Weatherability PC, PBT, PVC, PMMA
W-341 Soft acrylic resin (Details) PMMA
(Butadiene rubber)
C-223A High impact PC, PBT, PA, PS, PVC

METABLEN L type is an acrylic external lubricant that offers exceptional benefits to PVC processors with addition of very low levels. The low use levels mean that there will be scarcely effect on clarity, heat stability, chemical resistance and physical properties. As METABLEN L type introduces low haze contribution and excellent metal release, it is ideal for calendering, blow molding and extrusion applications.

Matrix Resin:
PC : Polycarbonate
ABS : Acrylonitrile-Butadiene-Styrene resin
PMMA : Polymethyl methacrylate
PO : Polyolefin
PEs : Polyester
PVC : Polyvinyl chloride
Grade Effect Merit
L-1000 Metal release
No acceleration of the fusion for Polyvinyl chloride(PVC)
Long term lubricity
Plate out
Less power torque

METABLEN P type is an acrylic processing aid that offers significant benefits to processors of PVC, ABS, polycarbonate and other thermoplastics. METABLEN P type greatly improves the melt elasticity of thermoplastics and promotes fusion of PVC with addition of low use levels. These products are designed to offer maximum dispersability in much kind of thermoplastics. METABLEN P type is possible to correspond wide range of molecular weight.

Matrix Resin:
PC : Polycarbonate
PVC : Polyvinyl chloride
ABS : Acrylonitrile-Butadiene-Styrene resin
PMMA : Polymethyl methacrylate
Grade Type Effect Merit


Molecular weight

Acceleration of fusion
Melt elasticity
Improve appearance
Dispersion of fillers
Jetting (Injection molding)
Flow mark, Air mark (Calendering)
Deep-drawing (Vacuum forming)
Uniformity of foamed cell
P-700 Lubricant type
(high molecular weight)
Acceleration of fusion
Melt elasticity
Metal release

METABLEN department