Internal functionalization in hyperbranched polyesters

Journal of Polymer Science, Part A: Polymer Chemistry

Volumn 36, Issue 17, 1998, Pages 3187-3192

  Trollsas M ^a   Hedrick, J ^a   Mecerreyes, D ^b   Jerome R ^b   Dubois, Ph ^c  

^a IBM ALMADEN RESEARCH CENTER   (United States)

^b UNIVERSITY OF LIÈGE   (Belgium)

^c UNIVERSITY OF MONS   (Belgium)

Author keywords

1,4,9 trioxaspiro 4.6 9 undecanone; Hyperbranched polyesters; Macromonomers; Poly( caprolactone)

Indexed keywords

KETONES; MACROMOLECULES; MOLECULAR STRUCTURE; MOLECULAR WEIGHT; MONOMERS; RING OPENING POLYMERIZATION;

HYPERBRANCHED POLYESTERS; MACROMONOMERS; POLYCAPROLACTONE;

POLYESTERS;

EID: 0032287694     PISSN: 0887624X     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1099-0518(199812)36:17<3187::AID-POLA21>3.0.CO;2-A     Document Type: Article

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44. 2. The polymerizations were carried out in the melt at 100°C (20 h). The polymers were then dissolved in THF and precipitated in cold methanol.
45. g) were recorded on a Perkin-Elmer DSC 7.
46. 2(g) atmosphere. The reaction was stopped after 24 h, the Pd/C was filtered off and the clear solution was precipitated into cold methanol. The obtained macromonomer was a white crystalline powder. Yield: 3.00 g.
47. 2 (3 mL) in a previously flamed flask, into which a solution of DPTS (16.0 mg, 0.05 mmol) in THF and then DCC (0.10 g, 0.50 mmol) was added. After 48 h the reaction mixture was precipitated into methanol and then filtered to yield 0.87 g (87%) of hyperbranched polymer 4-c.
48. 2/ ethanol (5/2 v/v) mixture (ca. 1.0 wt % copolymer for min. The polymer was isolated by precipitation in cold methanol.