Chain Extender KL-E4370

Chemical Names:
Styrene (ST), methyl methacrylate (MMA) and methyl methacrylate (GMA) copolymer

English Name :
2-Propenoic acid, 2-methyl-, oxiranylmethyl ester, methyl methacrylate, polymer
with ethenylbenzene

Formula : (C21H28O5)n
Molecular Weight : 6500-7200
CAS No : 1191261-43-4

Technical Properties
Appearance:                           white powder or granular
Non-volatile-matter content:   > 98%
Epoxy equivalent:                   280-310 g/mol

Application Features
KL-E4370 is an polymeric epoxy functional chain extender. In its structure, the
epoxy functional group can realize the expansion chain of the polymer through
reacting with the terminal hydroxyl groups, terminal carboxyl groups and
terminal amino groups of polycondensation resin. Thus achieving the purpose of
improving polycondensation resin viscosity characteristics, mechanical
properties and inhibiting the hydrolysis of polymers.
KL-E4370 chain extenders are blended with modified resins by a double screw
extruder, single screw extruder. The recommended dosage is 0.2-1.5 % used in
bio-based and biodegradable plastics (such as PLA, PPC, PBS, PHA, etc.) and
0.2-2.0% used in the condensation recycled plastics (such as PET, PBT, PC, PA
,etc.).The specific amount depends on the number of active functional groups
and performance requirements of products.

Sanitation & Safety
Acute toxicity test: KL-E4370, an extender, oral LD50(rat)> 5000mg/kg. bw,
which is a low-grade substance. Handle with due care and avoid dust formation
and keep away from ignition sources.

Packaging
The fiber tube lined with plastic bags.

Storage
It should be stored in dark, cool, dry and sealed conditions.

Minimum Order: 1 kilograms

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