| 摘要 |
The fast crystallizing polyalkyleneterephthalate resin compositions disclosed herein contain 0.05-4 percent by weight of a sodium salt of a hydrocarbon acid having the formula R DEG (COO)yNaz wherein R DEG is a hydrocarbon group having a valency of y and having 1-25 carbon atoms therein, preferably 1-10 carbon atoms, y is an integer having a value of at least one, advantageously 1-10 and preferably 1-3, and z is an integer having a value of at least one and no greater than the value of y, this sodium salt of the hydrocarbon acid being in the form of a complex with a polymeric compound, which contains at least two recurring units of the formula -CH2CH2O-, together with reinforcing agents, fillers and/or additives and optionally a flow promoter selected from low molecular weight organic esters or polymers containing a recurring structure of [(CH2)xO-]m wherein x is an integer having a value of no more than 5 and m is an integer having a value ranging from 2, preferably from 200 to about 5,000. The amount of complex is such as to give 0.05 to 4 percent, preferably 0.1-2 percent by weight of sodium carboxylate based on the weight of polyalkyleneterephthalate.
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