Classification: Internal Use
Compound
BMAAPMA
N,N-Bis[(3-methylaminoacryl)propyl]methylamine
Structure
Source
Synthesis described
below.
N,N-Bis[3-(methylamino)propyl]methylamine
Sigma-Aldrich
Acryloyl chloride
Sigma-Aldrich
MEHQ
Monomethyl ether hydroquinone
Sigma-Aldrich
UDMA
Urethane dimethacrylate
Esstech, Inc.
MeCN
Acetonitrile
Sigma-Aldrich
BMAAPMA
OVERVIEW

Alkyl acrylamides can be synthesized and used as acrylamide monomers by carrying out a
reaction at room temperature by treating N,N -bis[3 (methylamino)propyl]methylamine
(alkyl amine) with acetonitrile (MeCN) and acryloyl chloride to produce BMAAPMA (bisalkyl acrylamide).

Monomethyl ether hydroquinone (MeHQ) is used as a polymerization stabilizer / inhibitor,
which is typical in adhesive composites.

The composition may also include a dental filler material. Typically are glass filler particles
including silica materials, glass fillers, alkaline glass fillers, metal oxide and prepolymerized
fillers. The composition of the adhesive may also include a solvent such as water, ethanol,
acetone or a combination of those.
Classification: Internal Use
PREPARATION
Acryloyl chloride and MeHQ are added in a flask with a magnetic stir bar, and dissolved in MeCN.
The amine solution dissolved with MeCN is then added to the flask. The reaction mixture forms an
insoluble solid layer, to be discarded, and an organic layer which contains BMAAPMA. Finally, the
recovered material is used in the overall composition, which consists of 40% wt of BMAAPMA and
60% wt of UDMA.
Classification: Internal Use
Compound
DMPA
2,2-Dimethoxy-2-phenylacetophenone
DPIHFP
diphenyliodonium hexafluorophosphate
Structure
Source
Sigma-Aldrich
Sigma-Aldrich
Both DMPA and DPIHFP are used as photoinitiators in the photopolymerization of monomers.
DMPA is used in initializing free-radical polymerization, commonly used in the preparation of
acrylate polymers. It does not require the presence of amine as a co-initiator. DPIHFP is used
as a cationic photoinitiator. Both of their properties make it attractive for use as a photoinitiator
of dental composites.