Abstract:
La présente invention propose une composition liquide bi-composante comprenant un polymère silylé présentant des fonctions alkoxysilane, une résine époxy, un catalyseur aminé pour époxy et un catalyseur pour la condensation des silanols et un promoteur d'adhésion ou agent de couplage. La composition liquide selon l'invention permet d'obtenir après réticulation une membrane d'étanchéité destinée à la circulation piétonnière et/ou de véhicule.
Abstract:
The present invention provides a product and a manufacturing process for an aqueous dispersible dendritic polymer with various functionalities, and polymer compositions and polymer formulations comprising such a dendritic polymer. The aqueous dispersible dendritic polymer composition comprises a hydrophilic functional group to allow dispersion in aqueous solvents and improve washability of the polymer, a low surface tension functional group to impart resistance to dirt pick-up and optionally, a curable functional group to allow superior cross-linking capabilities and optionally, a softening functional group to impart flexibility to the composition.
Abstract:
A polymeric coating for a glass substrate includes a hexafluoropropylene oxide derived silane polymer. The hexafluoropropylene oxide derived silane polymer has a molecular weight of greater than about 5500, a thickness of between about 2 and about 15 nanometers and a coefficient of friction constant of less than about 0.35. A water contact angle of the polymeric hexafluoropropylene oxide derived silane coating decreases by less than about 27% after being subjected to 10000 abrasion cycles.
Abstract:
The present invention is relative to a heat-curable coating composition forming transparent tintable abrasion-resistant coatings, said compositions comprising, in an aqueous or hydro-organic solvent: (A) a hydrolysate of an epoxy-functional silane compound containing at least two alkoxy groups, (B) colloidal silica having an average particle diameter of 1 to 100 µm, (C) an aluminium chelate compound of formula A1(O-C1-4alkyl)nY3-n wherein n is 0, 1 or 2 and Y is a ligand selected from the group consisting of M-C(=O)-CH2-C(=O)-M and M-C(=O)-CH2-C(=O)O-M, wheren each M is independently a C1-4 alkyl group, and (D) a hydrolysate of a silylated poly(tetrahydrofurane) of formula (Ia) or (lb) said heat-curable composition not containing any multifunctional cross-linking agents selected from the group consisting of multifunctional carboxylic acids and multifunctional anhydrides.
Abstract:
Silane-functionalized hydrophilic polymers and polymeric matrices are described. Hydrophilic matrices can be formed from the polymers, and can be used in association with the preparation of implantable and injectable medical devices. Exemplary devices include those having a durable lubricious coating formed from the hydrophilic polymers.
Abstract:
A method for providing a flexible hardcoat on a substrate includes the use of a dual cure silane possessing a UV curable group and a thermally curable silane group. The dual cure silane hydro lyzed and a portion of the silanol groups are condensed with silica to provide a fluid coating composition which is then applied to a substrate. A first cure with UV radiation causes the coating to harden into a flexible hardcoat which permits the substrate to be thermoformed or embossed without damage to the coating. The substrate is then heated to thermally cure the hardcoat to provide a fully cured hard and abrasion resistant hardcoat.