Patent · US Expired

Anhydrous preparation for finishing sewing yarn and thread: contains dimethyl-polysiloxane

US4990267A · kind A · utility

2Cited by

4References

8Claims

0Family size

Assignee

Hansa Textilchemie GmbH · DE

Inventors

Friedhelm Nickel · Essen, DE
Sylvia Rodenwald · Bremen, DE
Hans Rott · Gladbeck, DE

Key dates

Filing date	Apr 18, 1989
Grant date	Feb 5, 1991
Priority date	—
Expiry date	Apr 18, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2962
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An anhydrous preparation for finishing sewing yarn and sewing thread is disclosed. The preparation essentially consists of 65 to 99% by weight of a dimethylpolysiloxane with a viscosity of 50 to 10,000 mm.sup.2 /S.sup.-1 at 25.degree. C. and a hydroxyl content of 0.3 to 1.5% by weight and 1 to 30% by weight of a fatty acid or a fatty amine with, on the average, 8 to 18 carbon atoms and, optionally, 0 to 5% by weight of conventional additives. The preparation are easy to prepare and have an unlimited shelf life and a constant viscosity even over a prolonged period of storage. The preparation confer low thread tension, decreased yarn breakage and improved stick-slip properties on the sewing yarn and thread.

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