Abstract:
The present disclosure relates to a pressure sensitive adhesive comprising: a) a multi-arm block copolymer of the formula Q n -Y, wherein: (i) Q represents an arm of the multi-arm block copolymer and each arm independently has the formula G-R, (ii) n represents the number of arms and is a whole number of at least 3, and (iii) Y is the residue of a multifunctional coupling agent, wherein each R is a rubbery block comprising a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or combinations thereof; and each G is a glassy block comprising a polymerized monovinyl aromatic monomer; b) a polymeric plasticizer having a weight average molecular weight M w comprised between 10.000 and 100.000 g/mol; c) at least one hydrocarbon tackifier which is primarily compatible with the rubbery blocks; d) a glassy block compatible aromatic resin having a softening point value (RBSP) of at least 150C, when measured by the ring and ball test method described in the experimental section; and e) optionally, a linear block copolymer of the formula L-(G) m , wherein L is a rubbery block comprising a polymerized olefin, a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or any combinations thereof; and wherein m is 1 or 2. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive and uses thereof.
Abstract:
This invention relates to coating compositions useful for the prevention and/or removal of limescale and/or soap scum. More specifically, the present invention is directed to a coating composition comprising acidified silica nanoparticles and a sulfonated polymer. The present invention is further directed to a method for the prevention and/or removal of limescale and/or soap scum from the surface of a substrate. The invention also relates to the use of such a coating composition for the prevention and/or removal of limescale and/or soap scum from the surface of a substrate.
Abstract:
The present disclosure relates to silica nanoparticle coatings and articles, such as in particular retro-reflective devices, bearing silica nanoparticle coatings thereon. The present disclosure is also directed to a method for retarding dew formation on the surface of an article, in particular an article comprising a retro-reflective support.
Abstract:
The present disclosure relates to a protective coating composition comprising: • a) an aqueous continuous liquid phase; and • b) acidified silica nanoparticles dispersed in the aqueous continuous liquid phase, wherein the acidified silica nanoparticles comprise mixed hydrophilic and oleophobic surface functionalization, wherein the hydrophilic surface functionalization is obtained by covalently linking the silica nanoparticle to an organofunctional moiety comprising a functional group selected from the group consisting of polyalkyleneoxy-containing moieties and zwitterionic moieties,and wherein the oleophobic surface functionalization is obtained by covalently linking the silica nanoparticle to an organofunctional moiety comprising a functional group selected from fluorine-containing moieties. In another aspect, the present disclosure is directed to a silica nanoparticle as described above, which comprise both hydrophilic and oleophobic surface functionalization. In still another aspect, the present disclosure is directed to a method of treating a hard surface.
Abstract:
The present disclosure is directed to compositions and methods for coating, particularly protecting and optionally cleaning, metallic surfaces, and articles containing such surfaces; wherein the compositions include a zwitterionic polymer including pendant zwitterionic moieties, an inorganic silicate, and water.
Abstract:
A method of making a coatable composition includes: a) providing a initial composition comprising silica nanoparticles dispersed in an aqueous liquid medium, wherein the silica nanoparticles have a particle size distribution with an average particle size of less than or equal to 100 nanometers, and wherein the silica sol has a pH greater than 6; b) acidifying the initial composition to a pH of less than or equal to 4 using inorganic acid to provide an acidified composition; and c) dissolving at least one metal compound in the acidified composition to provide a coatable composition. The at least one metal compound includes at least one of a silver compound, a zinc compound, and a copper compound. Coatable compositions, antimicrobial compositions, preparable by the method are also disclosed. Antimicrobial articles including the antimicrobial compositions are also disclosed.
Abstract:
The present disclosure relates to a silica nanoparticle coating assembly having enhanced durability and articles bearing silica nanoparticle coating assemblies thereon. The present disclosure is also directed to a method for enhancing abrasion resistance of a coating comprising acid-sintered nanosilica particles coated onto a substrate.
Abstract:
The present invention is directed to a multilayer pressure sensitive adhesive (PSA) film, having a first pressure sensitive adhesive layer and at least an opposing layer, wherein the first pressure sensitive adhesive layer comprises a pressure-sensitive adhesive composition with a (meth)acrylic-based elastomeric material comprising a reaction product of polymerizable material comprising: (a) a first monomer which is an alkyl (meth)acrylate ester of a primary alcohol R 1 -OH, the alkyl (meth)acrylate ester being of Formula (I) CH 2 =C(R 2 )-(CO)-OR 1 (I) wherein R 1 is an alkyl having 14 to 25 carbon atoms and the primary alcohol R 1 -OH has an iso index equal to at least 2 but no greater than 4; R 2 is hydrogen or methyl; and (b) a second monomer having an ethylenically unsaturated group; wherein the at least one opposing layer comprises at least one filler material. The invention is also directed to a method for the manufacturing of such a multilayer PSA film and its use.
Abstract:
The present disclosure relates to a coating composition for reducing oily contamination from a chromium surface, wherein the composition comprises: a) a silane compound comprising a perfluoropolyether group; b) a tetra-functional silane; c) a multivalent metal salt; d) an acid; and e) a solvent comprising water and optionally, an organic solvent. In another aspect, the present disclosure is directed to a method of reducing oily contamination from a chromium surface, which comprises the steps of: a) providing a chromium surface; b) applying a coating composition as described above to the chromium surface thereby forming a layer of the coating composition adjacent to the chromium surface; and c) drying and/or curing the layer of the coating composition thereby forming a coating layer adjacent to the chromium surface. According to still another aspect, the present disclosure is directed to a coated article comprising a chromium surface and a coating layer adjacent to the chromium surface, wherein the coating layer comprises a layer of the coating composition as described above which has been dried and/or cured onto the chromium surface. In yet another aspect, the present disclosure relates to the use of a protective coating composition as described above for reducing oily contamination from a chromium surface.
Abstract:
The present disclosure relates to an amphiphilic copolymer comprising: a) repeating monomeric units comprising a pendant zwitterionic moiety; b) repeating monomeric units comprising a pendant group comprising a fluorine-containing group and at least one heteroatom; and c) optionally, secondary repeating monomeric units comprising a pendant group comprising a functional group selected from the group consisting of phosphate groups, phosphonate groups, sulfonate groups, alkoxysilane groups, carboxylate groups, and any combinations thereof; and wherein the repeating monomeric units of the amphiphilic copolymer independently comprise an ethylenically unsaturated polymerizable group selected from the group of (meth)acrylate ester containing groups. In another aspect, the present disclosure is directed to a protective coating composition comprising: a) an amphiphilic copolymer as described above, and b) a solvent comprising water.