Patent · US Expired

Pre-expanded polyolefin foam beads

US6013687A · kind A · utility

6Cited by

9References

18Claims

0Family size

Assignee

Huels Aktiengesellschaft · DE

Inventors

Reinhard Wirobski · Marl, DE
Michael Traeger · Heilsbronn, DE
Bernd Guenzel · Haltern am See, DE

Key dates

Filing date	Sep 2, 1998
Grant date	Jan 11, 2000
Priority date	—
Expiry date	Sep 2, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2323/16
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Polyolefinic foam beads which can be processed over a wide temperature range to give molded articles where a ratio of the areas of low-temperature peak and high-temperature peak in the DSC curve during the first heating has a value of not more than 3, and where the heat of fusion of the secondary crystals is greater than 10 J/g.

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