Patent · US Expired

Polymer for rotomoulding

US6719941B1 · kind B1 · utility

4Cited by

0References

17Claims

0Family size

Assignee

Borealis Technology Oy · FI

Inventors

Astrid Frohaug · Stathelle, NO
Anders Storen Sandaas · Stathelle, NO
Anne Fatnes · Stathelle, NO

Key dates

Filing date	May 18, 2001
Grant date	Apr 13, 2004
Priority date	—
Expiry date	May 18, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2323/02
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention provides a process for the preparation of a moulded polymer item, said process comprising obtaining a polymer moulding powder having a mean particle size of 1 to 2000 &mgr;m comprising an admixture of UV-stabilizer-loaded polymer particles and non-UV-stabilizer-loaded polyolefin polymer particles, loading said powder into a mould, heating and rotating said mould to melt said powder, cooling said mould, and releasing said moulded polymer item from said mould.

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