Polymer Curing Agent B

Identification

Chemical Family

Peroxides

Categories

Technologies → Plastics → Product Families → Polymer Additives → Catalysts, Initiators & Crosslinkers

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Equipment & Parts

Technologies → Composite Materials → Product Families → Additives → Initiators, Promotors & Catalysts

Markets → Building & Construction → Applications → Building Materials → Interior Fixtures

Markets → Automotive & Transportation → Applications → Transportation → Marine

Markets → Industrial → Applications → Oil, Gas & Mining → Refining & Gas Processing

Applications & Uses

Applications

Polymer Curing Agent B is a very effective polymerization initiator for the room temperature cure of unsaturated polyester resins and gives exceptionally fast cures without significantly affecting gel times in most resin systems. Due to the very fast cure of Polymer Curing Agent B, the exotherm development is most often higher than common MEKPcobalt curing system, and therefore, not recommended to cure thick laminates in one step. This performance characteristic is especially beneficial in resin transfer molding (RTM), cast polymers, and other applications requiring fast mold turnaround for production efficiencies. It is not advisable to use Polymer Curing Agent B or any other AAP with gelcoats because of risk of yellowing on white gelcoats and due to the polar property of AAP which can cause osmosis effects. Polymer Curing Agent B is best suited for singly promoted resins using cobalt promotion alone. Levels of cobalt (naphthenate or octoate in 6% solutions) should be in the range of 0.1 to 0.5%. In some cases, the addition of 0.1% to 0.3% diethyl- or dimethylaniline speeds the curing further and gives extremely high exothermic temperature. The resin inhibitor type and level also has an important effect on the performance of Polymer Curing Agent B. In general, high inhibitor levels are usually not desirable, and use of some quaternary ammonium salts can cause significant yellowing of the resin. Also, quaternary ammonium compounds can have an inhibiting effect on the resin system geland cure properties.

End Uses

Composites End Use

Tanks

Features

Materials Features

Fast Curing

Functions

Composite Materials Functions

Initiator

Plastics & Elastomers Functions

Initiator,

Curing Agent

Function

Initiator, Curing Agent

Packaging & Availability

Standard Packaging

The standard package sizes of Polymer Curing Agent B are 5 kg (8 lb) and 25 kg (40 lb) polyethylene bottles.

Processing Methods

Composites Processing Methods

Centrifugal Casting,

Continuous Lamination,

Hand Lay-up,

Spray Lay-up

Properties

Physical Form

Liquid

Regulatory & Compliance

Chemical Inventories

AICS (Australia),

DSL (Canada),

ENCS (Japan),

IECSC (China),

ISHL (Japan),

KECI (Korea),

PICCS (Phillipines),

TSCA (USA),

TCSI (Taiwan)