The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1993
Filed:
Feb. 13, 1991
Abstract
Nonwovens of synthetic continuous filaments obtained by melt extrusion, in which at least 50% of the filaments contain at least from 0,5 to 3%, preferably from 0.6 to 1.5%, of a polyorganosiloxane introduced into the said filaments during their manufacture. Process for the manufacture of these nonwovens, in which, before extrusion of the polymer melt to produce the filaments by flowing through orifices of a die, a silicone oil of polyorganosiloxane type is introduced in the proportion at least of 0,5 to 3%, preferably from 0.6 to 1.5% relative to the polymer, into the melt of the latter. The polyorganosiloxane product employed is of the polydiorganosiloxane type with a molecular weight of between 1,000 and 250,000, preferably between 7,500 and 70,000, corresponding to dynamic viscosities of 50 to 10,000 mPa s; stable under extrusion conditions. Use of the nonwovens, chiefly as a support for floor coverings with stitched pile.