Patent · US Expired

Molding compositions based on high molecular weight polyalkylene terephthalates

US4550148A · kind A · utility

2Cited by

4References

5Claims

0Family size

Assignee

Chemische Werke Huels Aktiengesellschaft · US

Inventors

Michael Droescher · Dorsten, DE
Klaus Burzin · Marl, DE
Christian Gerth · Detmold, DE
Horst Heuer · Haltern, DE

Key dates

Filing date	Jan 16, 1985
Grant date	Oct 29, 1985
Priority date	—
Expiry date	Jan 16, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/3492
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Improved molding compositions based on high-molecular polyalkylene terephthalates are obtained by heating at 240.degree.-300.degree. C. a melt containing a mixture of PA0 (A) a polyalkylene terephthalate having a viscosity number J of at least 50 cm.sup.3 /g, and PA0 (B) 0.05-2.5 parts by weight, based on 100 parts by weight of the molding composition of a cyclic, trimerized isophorone diisocyanate or an oligomer thereof with a degree of oligomerization of 2-5 with an isocyanate functionality of 3-7.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.