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Chapter 27 841
Copyright © 2017 Pearson Education, Inc.
38.
The OH group on the middle carbon of glycerol allows for cross-linking during polymerization. Glyptal
gets its strength from this cross-linking.
C
O
COCH
2
CHCH
2
OC
O
O
O
C O
C
O
CH
2
CHOC
CH
2
O
C
O
O
O
COCH
2
CHCH
2
OC
O O
C
COCH
2
CHCH
2
OC
O O
C O
COCH
2
CHCH
2
OC
O
OC
O
O
O
O
O
C
O
C HO
OH
OH
glycerol
terephthalic acid
HOCH
2
CHCH
2
OH
+
O