METHOD FOR COATING A TEXTILE MEDIUM

Abstract

The present invention relates to a coating method wherein a silicone composition crosslinkable by polyaddition reactions is used to form a silicone elastomer on an open-work and/or elastic textile medium. The crosslinking of the silicone composition is obtained by irradiating with UV radiation, the source of which is a UV-LED lamp.

Description

Claims

1. A method for coating a silicone composition X which is crosslinkable by polyaddition reaction to form a silicone elastomer on an open-work and/or elastic textile medium S, comprising a), b) and c): a) a silicone composition X which is crosslinkable by polyaddition reactions is provided, comprising: at least one organopolysiloxane A having, per molecule, at least two C2-C6 alkenyl groups bonded to the silicon,at least one organopolysiloxane B having, per molecule, at least two SiH units, anda catalytically effective amount of at least one hydrosilylation catalyst C, which is activatable by UV irradiation,b) said silicone composition X is deposited continuously or discontinuously on at least one face of said textile medium S, andc) said silicone composition X is crosslinked by irradiation with UV radiation, a source of which is a UV-LED lamp.

2. The method as claimed in claim 1, wherein the textile medium S is a lace or an elastic strip.

3. The method as claimed in claim 1, wherein the silicone composition X further comprises at least one organopolysiloxane compound A′ having, per molecule, a single C2-C6 alkenyl group bonded to the silicon.

4. The method as claimed in claim 1, wherein the silicon composition X additionally comprises a filler D, optionally a mineral filler of silica type.

5. The method as claimed in claim 1, wherein the silicone composition X: does not contain any crosslinking inhibitor; optionally, does not contain I-ethynyl-1-cyclohexanol (ECH); and/ordoes not contain any adhesion-promoting compound.

6. The method as claimed in claim 1, wherein the silicone composition X comprises, based on the total weight of the silicon composition X: from 50% to 90%, optionally from 60% to 87%, of an organopolysiloxane A having, per molecule, at least two C2-C6 alkenyl groups bonded to the silicon,from 0.1% to 10%, optionally from 0.5% to 5%, of an organopolysiloxane B having, per molecule, at least two SiH units,from 2 ppm to 400 ppm, optionally from 5 ppm to 200 ppm, of a hydrosilylation catalyst C (calculated by weight of metal),from 5% to 20%, optionally from 8% to 18% of a filler D, optionally silica, optionally treated with a compatibilizerand optionally from 4% to 20%, optionally from 8% to 18%, of an organopolysiloxane A′ having, per molecule, a single C2-C6 alkenyl group bonded to the silicon.

7. The method as claimed in claim 1, wherein the UV-LED lamp used during irradiation (c) emits radiation having a wavelength of 365 nm, 385 nm, 395 nm or 405 nm, optionally 365 nm.

8. The method as claimed in claim 1, wherein the crosslinking (c) is carried out at a temperature of between 15° C. and 60° C., optionally between 20° C. and 40° C., and optionally at ambient temperature.

9. A textile medium S coated on at least one face with a silicone elastomer which can be obtained by the method as defined in claim 1 .

10. A product comprising the coated textile medium S as claimed in claim 9 in the field of clothing, optionally lingerie optionally as lace for one or more of tops, bottoms, or bras, and/or sports clothing, hygiene items, and/or medical devices, optionally compression bandage or dressing.