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3860646 
Journal Article 
SYNTHESIS OF POLYESTERS-PERFLUOROPOLYETHERS BLOCK COPOLYMERS .3. USE OF VARIOUS TELECHELIC PERFLUOROPOLYETHERS 
Pilati, F; Toselli, M; Vallieri, A; Tonelli, C 
1992 
Yes 
Polymer Bulletin
ISSN: 0170-0839
EISSN: 1436-2449 
28 
151-157 
Multiblock -(A-B)n- copolymers containing polyester segments together with perfluoropolyether (PFPE) segments have been prepared by polymerizing dimethyl terephthalate (DMT), or an equimolar mixture of DMT and dimethyl isophthalate (DMI), with ethylene glycol (EG) in the presence of different telechelic perfluoropolyethers in various amounts (5-30 wt%), using Ti(OBu)4 as the catalyst. Fomblin ZDEAL (a -COOCH3 terminated PFPE), Fomblin ZDOL (a PFPE having -CH2OH terminal groups), and Fomblin ZDOLTX (a PFPE having -CH2O(CH2CH2O)yH terminal groups) were used as telechelic PFPEs. Fomblin ZDOLTX gave the best results: the highest yield in block copolymer (less sensitive to hydrolysis with respect to block copolymers prepared from the other PFPEs), a longer average length of polyester segments, and a relatively low fraction of PFPE lost by distillation during polymerization. 
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