Process for the preparation of water repellent materials...

Details Process for the preparation of water repellent materials... Process for the preparation of water repellent materials...

2005-07-05

2005-07-05

Dixon, Merrick (Department: 1774)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S172000, C428S195100, C427S539000, C427S541000, C427S495000, C427S535000

Reexamination Certificate

active

06913823

ABSTRACT:
A process for the preparation of water repellent acrylic fiber materials which includes (a) a first step in which the material is subjected to plasma treatment in the presence of a reactive gas or a mixture thereof with a noble gas; and (b) a second step in which the material obtained in step (a) is subjected to waterproofing by means of (i) traditional resin finish or (ii) with plasma generated in the presence of fluorinated compounds. The materials made of acrylic fiber obtained by the process have a waterproofing degree higher than 25 cm of water column and have a rigid appearance or good draping and softness depending on whether they have been water-proofed with treatment (i) or (ii). These materials may used in the preparation of covers or sun shields.

REFERENCES:
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patent: 5122407 (1992-06-01), Yeo et al.
patent: 5395411 (1995-03-01), Kobayashi
patent: 5965257 (1999-10-01), Ahluwalia
patent: 6013153 (2000-01-01), Koinuma et al.
patent: 0 177 364 (1986-04-01), None
patent: 1 346 139 (1974-02-01), None
patent: WO 95/04854 (1995-02-01), None

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