Chain Extender BX ADR 4370


Chemical name: Styrene (ST) methacrylate (MMA) and glycidyl methacrylate (GMA) copolymer

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

Molecular weight: 6500-7200

CAS No.:29564-58-7


Technical Specifications

Appearance: White powder or granules

Epoxy equivalent: 280-310 g/mol

Equal to: basf joncryl ADR 4370/4380/4385.


Product Description

Chain extender BX ADR 4370 is a polymeric epoxy functional chain extender. The epoxy functional groups in its structure can achieve chain extension of the polymer by reacting with the terminal light groups, hydroxyl groups and amino groups in the resin to improve the resin characteristics, viscosity, mechanical properties and the purpose of inhibiting polymer hydrolysis can be used in food contact materials.

epoxy chain extender BX ADR 4370 is generally blended and extruded with plastic resin through twin-screw or single-screw extruders. The recommended dosage in bio-based and biodegradable plastics such as polylactic acid (PLA), polymethylethylene carbonate (PPC), polybutylene succinate (PBS), and polyhydroxy fatty acid esters (PHAs) is 0.2 -1.5phr, recommended in polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamine (PA) polycarbonate (PC) and other polycondensation recycled plastics The dosage is 0.2-2.0phr. The specific dosage depends on the number of active functional groups in the resin and the product performance requirements.


Baoxu Chemical Chain Extender



MwTg (°C)Equal to BASFEEW


MwTg (°C)
BX ADR 3700280-3106500-7200/joncryl ADR 4370285680054
BX ADR 4300430 -4605500-600056Jonciyl ADR 4300445550056
BX ADR 4370270-3006500-700061joncryl ADR 4370285680054
BX ADR 4370270-3006500-700061joncryl ADR 43804503300-41
BX ADR 4370270-3006500-700061Joncryl ADR 43854506000-37
BX ADR 44701330-153035000-4000094////


Storage, transportation, and packaging

In a ventilated and dry environment, the shelf life is two years. Net weight: 20kg/bag, lined with PP film.


health safety

The oral LDs of this product for mice are all greater than 5000mg/ Dust formation should be avoided during operation and use, and keep away from fire sources.

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