| 摘要 |
Processes of making hyperbranched polymers comprising heating in the presence of a mild basic/nucleophilic esterification catalyst a monomer mixture comprising a hyperbranching monomer consisting of compounds having two COOH groups and one OH group, compounds having one COOH group and two OH groups, compounds having one COOH group and three OH groups, or compounds having three COOH groups and one OH group, wherein the mild basic/nucleophilic esterification catalyst is selected from tin, titanium, aluminum, antimony, manganese, zinc, and calcium derivatives. Processes of making thermoplastic compositions comprising melt-mixing the hyperbranched polymers with one or more thermoplastic polymers and one or more fillers, preferably glass, such that the thermoplastic composition composition exhibits an increase in melt viscosity of less than 10% as measured between 5 minutes and 32 minutes hold up time (HUT) and according to ISO 11443 at 250° C. and at a shear rate of 1000 s−1.
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