Polyester compositions with a high crystallization rate
AssigneeEnichem S.p.A.
InventorsRiccardo Po', Ernesto Occhiello, Giorgio Giannotta, Fabio Garbassi
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Abstract
Polyester compositions with a high crystallization rate obtained by mixing, at a high temperature, a polyester resin with at least one organic compound having the general formula: ROOC--Ar--OOC--Ar'--COO--Ar--COOR (I) where R represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical whereare Ar and Ar', either the same or different, represent a simple or condensed aromatic radical containing from 6 to 12 carbon atoms, and cooling the mixture thus obtained to room temperature.
Claims10
Polyester compositions with a high crystallization rate obtained by mixing, at a high temperature, a polyester resin with at least one organic compound having the general formula:
- ROOC--Ar--OOC--Ar'--COO--Ar--COOR (I)
- where R represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical, Ar represents a 1,2-phenylene or a naphthylene group, and Ar' represents a phenylene or naphthylene group, at least one of Ar and Ar' being naphthylene.
Process for the preparation of molded products comprising molding a polyester composition with a high crystallization rate obtained by mixing, at a high temperature, a polyester resin with at least one organic compound having the general formula:
- ROOC--Ar--OOC--Ar'--COO--Ar--COOR (I)
- where R represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical, Ar represents a 1,2-phenylene or a naphthylene group, and Ar' represents a phenylene or naphthylene group, at least one of Ar and Ar' being naphthylene, and cooling the mixture thus obtained to room temperature.
Process for improving the crystallization rate of a polyester resin comprising:
- mixing at a high temperature a polyester resin with at least one organic compound having the general formula
- ROOC--Ar--OOC--Ar'--COO--Ar--COOR (I)
- where R is hydrogen or a C.sub.1 -C.sub.4 alkyl radical, Ar represent a 1,2-phenylene group of a naphthylene group and Ar' represents a phenylene or naphthylene group, at least one of Ar and Ar' being naphthylene;
- and
- cooling the mixture thus obtained to room temperature.
Dependencies are inferred from the claim text.