Patent · US Active

Ductile expanded polyesters having high impact resistance

US9062165B2 · kind B2 · utility

5Cited by

1References

9Claims

0Family size

Assignee

ARMACELL ENTERPRISE GMBH & CO. KG · DE

Inventors

Mika Meller · Vevey, CH
Jie Li · Zofingen, CH
Horst GRATER · Munster, DE

Key dates

Filing date	May 9, 2011
Grant date	Jun 23, 2015
Priority date	—
Expiry date	Oct 30, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L23/0869
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to expanded polyester materials comprised of polyester/acrylic elastomer blend having an improved ductility and impact resistance, while the compression strength, shear strength/modulus of polyesters remain almost unchanged or unworsened. Addition of a non-reactive/reactive acrylic mixture serving as the blend partner improves the melt strength in an expanding process and leads to a better impact resistance of expanded aromatic polyester materials. All expanded polyester materials are produced with help of a reactive process.

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