Patent · US Active

Vinyl aromatic/diene-block copolymers having good organoleptic properties

US11326014B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

INEOS STYROLUTION GROUP GMBH · DE

Inventors

Norbert Niessner · Friedelsheim, DE
Daniel Wagner · Bad Dürkheim, DE
Michiel VERSWYVEL · Mechelen, BE

Key dates

Filing date	Jun 18, 2018
Grant date	May 10, 2022
Priority date	—
Expiry date	Oct 4, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2096/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a vinyl aromatic/diene-block copolymer A, obtained by an anionic polymerization of a monomer composition, comprising: Al: 60-95 wt.-% of at least one vinyl aromatic monomer, and A2:5-40 wt.-% of at least one diene monomer, wherein the vinyl aromatic/diene-block copolymer A in total comprises less than 10 parts per million (ppm) of acetaldehyde, methacrolein and styrene based on the total amount of vinyl aromatic/diene-block copolymer A; the vinyl aromatic/diene-block copolymer A has improved orgnoleptic properties and is in particular suitable for producing food packaging materials.

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