摘要:
The invention relates to the general field of silicone coating on various pliable supports, for example textiles, made of synthetic polymers (polyamide, polyester, etc.). An aim of the invention is to propose an effective process for producing coatings that are waterproof and permeable to moisture vapour, on pliable supports, this process allowing an improvement in the moisture vapour-permeability of the silicones while at the same time conserving the waterproofness. The process according to the invention which achieves this aim consists essentially in coating one of the faces of the support with a film formed by a water-in-oil inverse silicone emulsion comprising a continuous oily silicone phase φs, which can be crosslinked into an elastomer and which comprises a polyorganosiloxane (POS) A that is crosslinkable by polyaddition, by polycondensation, by cationic means or by free-radical means; optionally a crosslinking organosilicic compound B; optionally at least one catalyst C, an aqueous phase φa, a stabilizer, and in seeing to it that the silicone phase φs crosslinks and that removal of water occurs. The invention also relates to pliable supports made of polyamide or polyester, that are waterproof and permeable to moisture vapour, obtained by using a water-in-oil inverse silicone emulsion.
摘要:
Silicone coating on various soft supports, for instance textiles, made of synthetic polymers (polyamide, polyester) provides an efficient method for producing water impermeable and water permeable coatings, on soft supports, said method enabling to improve permeability to water vapor of the silicones while preserving impermeability to water. The inventive method enabling this consists mainly in: coating one of the surfaces of the support with a film formed by an invert water-in-oil silicone emulsion comprising a continuous oily silicone phase phi s, crosslinkable into elastomer and including a polyorganosiloxane (POS) A crosslinkable by addition polymerization, by cationic process or free-radical process; optionally a crosslinking organosilicon compound B; and optionally at least a catalyst C; an aqueous phase phi a; a stabilizing agent; and in ensuring crosslinking of the silicone phase phi s and elimination of water. The invention also concerns water impermeable and water vapor permeable soft polyamide or polyester substrates obtained by using an invert water-in-oil silicone emulsion.
摘要:
Silicone coating on various soft supports, for instance textiles, made of synthetic polymers (polyamide, polyester) provides an efficient method for producing water impermeable and water permeable coatings, on soft supports, said method enabling to improve permeability to water vapor of the silicones while preserving impermeability to water. The inventive method enabling this consists mainly in: coating one of the surfaces of the support with a film formed by an invert water-in-oil silicone emulsion comprising a continuous oily silicone phase phi s, crosslinkable into elastomer and including a polyorganosiloxane (POS) A crosslinkable by addition polymerization, by cationic process or free-radical process; optionally a crosslinking organosilicon compound B; and optionally at least a catalyst C; an aqueous phase phi a; a stabilizing agent; and in ensuring crosslinking of the silicone phase phi s and elimination of water. The invention also concerns water impermeable and water vapor permeable soft polyamide or polyester substrates obtained by using an invert water-in-oil silicone emulsion.
摘要:
Oil-in-water siloxane emulsions are useful for providing a substrate, especially a textile substrate, with long-lasting water-repellent properties.
摘要:
Crosslinkable liquid composition which can crosslink to give a hydrophobic and/or oleophobic silicone elastomer coating, comprising a polyorganosiloxane (POS) resin A exhibiting, per molecule, on the one hand, at least two different siloxyl units chosen from those of M, D, T and Q types, one of the units being a T unit or a Q unit, and, on the other hand, at least three hydrolysable/condensable groups of OH and/or OR1 types, where R1 is a linear or branched C1 to C6, preferably C1 to C3, alkyl radical, a system for promoting attachment B and a polyfluoroacrylate F. Use of this composition to form a silicone elastomer sheath around the constituent yarns, fibers and/or filaments of a textile material and to confer long-lasting oleophobicity and/or hydrophobicity properties.
摘要:
Crosslinkable liquid silicone compostions suited, on curing, for the long-lasting protective and/or applicational coating/treatment of textile substrates, for example, for imparting softness, hydrophobicity, oleophobicity, hydrophilicity or antistatic properties thereto, comprise a formulation of (a) at least one particular polyorganosiloxane (POS) resin, (B) at least one metal alkoxide and/or polyalkoxide, or combination thereof with at least one optionally alkoxylated organosilane and/or at least one organosilicon compound bearing at least one epoxy, amino, ureido, isocyanato and/or isocyanurate substituent, (C) at least one functional coreactant therefor, (D), optionally, at least one nonreactive additive and (E), also optionally, at least one auxiliary agent other than an additive (D).
摘要:
The invention relates to the use of waterproofing liquid silicon compositions for impregnating porous construction materials, for example mineral or (ligno)cellulose materials.
摘要:
An essential aim of the invention is a treatment which permits: (i) coating a textile material and/or threads, fibers and/or filaments making up the textile material, the silicone formulation cross-linking around the threads, fibers and/or filaments making up the textile material and forming a cross-linked silicone coating around the same and ii) durably imparting water-repellency and impermeability to said textile material without substantially affecting the intrinsic respirability of the textile material. Said aim is achieved by means of the present invention using at least one cross-linkable silicone formulation as a base for the textile coating material, particularly, of a textile material which may be used for the production of sports clothing.
摘要:
Stable and substantially filled cationic dental compositions are described which include: (1) at least one cationically reactive compound (A); (2) at least one dental filler (B); (3) optionally, at least one dispersant (C) composed of at least one organic polymer or copolymer; (4) at least one cationic photoinitiator (D); and (5) optionally, at least one photosensitizer (E). The dental filler (B) is treated with at least one organosilicon coupling agent (F), and at least one compound (G). The organosilicon coupling agent (F) has at least one reactive function (rfA) directly linked to a silicon atom forming after activation of a chemical bond with the dental filler, and at least one reactive function (rfB) not directly linked to a silicon atom, forming after activation, a chemical bond with a reactive function (rfC) of the compound (G).
摘要:
Stable and substantially filled cationic dental compositions are described which include: (1) at least one cationically reactive compound (A); (2) at least one dental filler (B); (3) optionally, at least one dispersant (C) composed of at least one organic polymer or copolymer; (4) at least one cationic photoinitiator (D); and (5) optionally, at least one photosensitizer (E). The dental filler (B) is treated with at least one organosilicon coupling agent (F), and at least one compound (G). The organosilicon coupling agent (F) has at least one reactive function (rfA) directly linked to a silicon atom forming after activation of a chemical bond with the dental filler, and at least one reactive function (rfB) not directly linked to a silicon atom, forming after activation, a chemical bond with a reactive function (rfC) of the compound (G).