Chemistry Reference
In-Depth Information
acrylate fraction. Lin and co-workers prepared
16
from AA modified rosin and
synthesised the copolymers of
16
with MMA [90]. They showed that
16
improved
the heat resistance and solvent resistance of copolymers. Do and co-workers prepared
an acrylic monomer by the reaction of hydrogenated rosin with glycidyl methacrylate
[41, 91]. The acrylic monomer can be used as a tackifying agent for ultraviolet
(UV) curing pressure sensitive adhesives. Duan and co-workers [42, 92] prepared
a rosin-based acrylic monomer by reacting
p
-toluenesulfonic acid-(2-acryloyloxy)
ethyl ester with sodium rosinate through a nucleophilic substitution reaction. The
rosin-based acrylic monomer was used to carry out graft copolymerisation with
chitosan under microwave irradiation using potassium persulfate as an initiator.
The copolymer was used for delivery of the drug fenoprofen calcium. Wang and co-
workers recently prepared
17
and
18
by the reaction of dehydroabietic acid chloride
with 2-hydroxyethyl acrylate or 2-hydroxyethyl methacrylate [20, 93]. Atta and co-
workers [40] prepared a few diacrylate monomers (
19
-
22
) based on
2
and
1
. These
monomers were used for coating steel.
O
C
H
2
H
2
C
O
C
C
CH
2
C
O
C
C
CH
2
H
O
O
CH
3
23
24
25
O
C
H
H
H
2
CHCH
2
COOC-C
C-COOCH
2
CHCH
2
C-COOCH
2
CHCH
2
H
2
CHCH
2
COOC-C
H
H
26
Figure 4.5
Allyl ester monomers of resin acids
Allyl monomers of resin acids
. Allyl monomers are generally prepared by the
esterification reaction of resin acids and their derivatives with allyl alcohol or methallyl
alcohol. Bai and co-workers synthesised the rosin allyl alcohol ester and its polymer,
