Process for the preparation of fast crystallizing polyalkyleneterephthalate resin compositions
US4558085A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1984 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Aug 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
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.degree.(COO).sub.y Na.sub.z wherein R.degree. 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 --CH.sub.2 CH.sub.2 O--, 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 [(CH.sub.2).sub.x O--].sub.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 poly…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.