Patent · US Expired

Manufacture of fibrids of polyolefins

US4110385A · kind A · utility

7Cited by

7References

4Claims

0Family size

Assignee

BASF SE

Inventors

Bruno Sander · Ludwigshafen, DE
Eckhard Bonitz · Bischofswerda, DE
Kurt Scherling · Hemsbach, DE

Key dates

Filing date	Aug 16, 1976
Grant date	Aug 29, 1978
Priority date	—
Expiry date	Aug 16, 1996

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H13/14
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Fibrids of polyolefins showing a high degree of fibrillation and a high specific surface area are obtained by flashing a pressurized solution of polyolefin in pentane or in a pentane-containing solvent mixture at a temperature above the boiling point of the solvent by passing said solution through an orifice into a space which is at a lower pressure and in which shearing forces are applied to said solution. The fibrids directly obtained may be used, for example, for the manufacture of paper or for the manufacture of textile-like webs.

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