Hydrophilic silicone elastomeric material used in particular...

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 83/04 (2006.01) A61C 9/00 (2006.01) A61K 6/10 (2006.01) C08J 5/00 (2006.01)

Patent

CA 2450605

The invention relates to a setting silicone material to give a silicone elastomer by polyaddition reactions, particularly useful for taking imprints, for example dental imprints. The aim of the invention is a material which has a level of hydrophilicity characterised by achieving contact angles .theta. (cf. figure 1 where (1) represents the surface of a film of set silicone material and (2) represents the drop of water deposited on said surface) which can be as low as those from 25 to 27·. The invention is based upon the introduction into the setting silicone material of particularly: (a) at least one non-ionic surfactant comprising an ester obtained by esterification of a C¿10?-C¿14? fatty acid with a poly(oxyalkylene) glycol of low molecular weight; or a synergistic mixture of (a) + (b) where (b) is at least one non-ionic surfactant comprising a polyalkoxylated C¿5?-C¿16? fatty alcohol of low molecular weight. Said silicone material may be used for the taking of imprints, for example, dental imprints and for production of moulded pieces in addition to copying masses in dental applications, which can develop a marked hydrophilic and/or anti-static character on the surface thereof.

L'invention concerne un matériau silicone réticulable en elastomère silicone par des réactions de polyaddition, utilisable notamment pour la prise d'empreintes, par exemple dentaires. Le but visé est de fournir un materiau permettant notamment d'atteindre un niveau d'hydrophilie marqué par I'obtention d'angles de contact .theta. (cf. figure 1 où le repère 1 représente la surface d'un film du matériau silicone réticulé et le repère 2 représente la goutte d'eau deposée sur ladite surface) pouvant être aussi faibles que ceux allant de 25 a 27~. L'invention repose sur I'introduction, dans le matériau silicone réticulable notamment: (a) d'au moins un agent tensioactif non ionique consistant dans un ester obtenu par estérification d'un acide gras en C1O-C14 par un poly(oxyalkylène)glycol de bas poids moléculaire; ou d'une association synergique (a) + (b) où b désigne au moins un agent tensioactif non ionique consistant dans un alcool gras en C5-C16 polyalkoxylé de bas poids moléculaire. Les applications visées concernent I'utilisation du matériau silicone pour la prise d'empreintes, par exemple dentaires et pour la fabrication de pièces moulées, autres que des masses de duplication dans les applications dentaires, capables de développer en surface un caractère hydrophile et/ou antistatique marqué.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Hydrophilic silicone elastomeric material used in particular... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrophilic silicone elastomeric material used in particular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrophilic silicone elastomeric material used in particular... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1402188

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.