Patent · US Active

Method for the combined processing of at least two polymer melts

US12110369B2 · kind B2 · utility

0Cited by

3References

14Claims

0Family size

Assignee

BASF SE

Inventors

Thomas Heitz · Ludwigshafen am Rhein, DE
Johann Diedrich Brand · Waterloo, BE
Joerg Erbes · Karlsruhe, DE

Key dates

Filing date	Mar 5, 2020
Grant date	Oct 8, 2024
Priority date	—
Expiry date	Jun 18, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/03
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for the combined processing of at least two polymer melts selected from the group consisting of (M1), (M2) and (M3), wherein (M1) is a polymer melt comprising a terephthalate polyester (A1), (M2) is a polymer melt comprising a copolyester (A2) on the basis of terephthalic acid, at least one aliphatic, ω-dicarboxylic acid and at least one aliphatic 1,ω-diol, and (M3) is a polymer melt 0 comprising a copolyester (A3) on the basis of terephthalic acid, at least one polytetramethylene glycol and at least one aliphatic 1,ω-diol. The method comprises the alternating processing of the at least two polymer melts into at least one product selected from the group consisting of pellets (P1), fibers (P2), expanded particles (P3), preforms (P4) and articles (P5).

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