DYNACOLL® AC series

Acrylics for adhesives are bead polymers made of methyl methacrylate and n-butyl methacrylate which are mainly used to modify reactive hot melts for flat lamination applications.

Various DYNACOLL® AC grades with tailored glass transition temperature and molecular weight are available. They also differ according to their acid and hydroxyl functionality.

DYNACOLL® AC polyacrylates are supplied as beads in bags of 25 kg.

DYNACOLL® AC provides outstanding quality and flow properties

DYNACOLL® AC modified reactive hot melts provide

- low viscosity
- very long open time
- aggressive tack
- high creep resistance directly after bonding

Flat lamination applications require long open times to permit long handling times needed to bond huge panels or sandwich composites. On the other hand, initial strength has to be very high to hold the bonded parts in place without any further mechanical fixation.

To achieve these specific requirements a polymer mixture of DYNACOLL® AC acrylics and DYNACOLL® 7000 Polyester-Polyols is recommend. Those RHM's are mainly used for:

- Sandwich composites
(of aluminium, FRP panels, foam or wood-based substrates e. g. for recreational vehicals)
- Honeycomb structures
(e.g. for door manufacturing)
- Foil laminated particleboard
(e.g. for furniture)
- Medium density fiberboard
(e.g. for furniture)