ISSN:
0025-116X
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
The synthesis of five-membered cyclic ketenacetals was investigated. It was shown that 2-methylene-1,3-dioxolanes have various properties of polymerization in dependence on the substituents in 4- and 5-position. While 4-methylene-3,5-dioxatricyclo[5.2.1.02,6]decane (1) polymerizes without ring opening to high-molecular-weight polyacetals, which are insoluble in common solvents, 4-methylene-8,9:10,11-dibenzo-3,5-dioxatricyclo[5.2.2.02,6]undeca-8,10-diene (2) yields oligomers (number-average molecular weight M̄n (vapour pressure osmometry) = 900-1500) with ring-opened and non-ring-opend units.
Zusätzliches Material:
5 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/macp.1993.021940721
