Patent · US Expired

Processing polyethylene resins

US4603173A · kind A · utility

30Cited by

1References

21Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Mark P. Mack · Sharonville, US
Matthew Arthur Page · Wilmington, US

Key dates

Filing date	Feb 27, 1985
Grant date	Jul 29, 1986
Priority date	—
Expiry date	Feb 27, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2314/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyethylene blow molding resins having improved processing properties such as reduction of flare swell and die swell are obtained by treating resins having particular molecular weight characteristics with low levels of free radical initiators. The free radical initiators are used at such low levels that the final physical properties of the resins are substantially unchanged, yet processing is greatly improved.

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