Abstract:
This invention relates to a novel silicone emulsion, a water-based anchorage additive thereof and a silicone release coating composition. This invention provides a novel silicone emulsion comprising: (A) silicone compound comprising an anchorage additive for enhancing the adhesion to a polymer film substrate, wherein the anchorage additive is the reaction product of a fluid polyorganosiloxane (A1 ) containing at least one alkenyl group and at least one silanol group with a hydrolysable silane (A2) containing at least one epoxide group; (B) at least one surfactant; and (C) water. This invention also provides a water-based anchorage additive thereof, and a silicone release coating composition comprising (X1 ) said novel silicone emulsion and (X2) at least one curable silicone composition, preferably a water-based silicone release coating composition. The curable silicone release coating composition may be applied to a sheet-form substrate and cured to form a release-coated layer having good release property and improved rub-off resistance on the substrate.
Abstract:
There are described vinyl sequential copolymers (and processes for making them) comprising (a) at least 8. 5 wt-% preferably >=20 wt-% of a higher itaconate diester (preferably dibutyl itaconate -DBI); (b) less than 23 wt-% acid monomer but also sufficient to have an acid value less than 150 mg KOH/g of polymer, (c) optionally with less than 50 wt-% of other itaconate monomers, and (d) optionally less than 77 wt-%of other monomers not (a) to (c). The DBI may be biorenewable. One embodiment is an aqueous dispersion of the vinyl sequential polymer of two phases: A) 40 to 90 wt-% of a vinyl polymer A with Tg from -50 to 30°C; and B) 10 to 60 wt-% of a vinyl polymer B with Tg from 50 to 130°C; where DBI is used to prepare A and/or B and polymer A has from 0.1 to 10 wt-% of at least one acid-functional olefinically unsaturated monomer.
Abstract:
There are described a dispersion of polymeric beads where the beads comprise a copolymer composition comprising (preferably consisting essentially of):copolymers (and processes for making them) comprising (a) at least 8. 5 wt-% preferably >=20 wt-% of a higher itaconate diester (preferably dibutyl itaconate -DBI); (b) less than 23 wt-% acid monomer but also sufficient to have an acid value less than 150 mg KOH/g of polymer, (c) optionally with less than 50 wt-% of other itaconate monomers, and (d) optionally less than 77 wt-%of other monomers not (a) to (c). The DBI may be biorenewable. A further embodiment is an aqueous suspension polymerisation process for preparing vinyl polymer beads from olefinically unsaturated monomers and a free-radical initiator, where at least 10 wt-% of the monomer is DBI.
Abstract:
Aqueous emulsions of a silicone resin are disclosed that provide a solid silicone resineous coating upon removing water from a film of the emulsion. The silicone resin emulsions are useful for treating various substrates for imparting water resistance/repellence and improving wear/weather protective properties. In particular, they are useful for rendering mineral-based building materials water-resistant, and also as binders in paints.
Abstract:
Copolymers of hydrophobic higher branched vinyl esters, and a polymerization process for polymerization of hydrophobic monomers in the presence of surfactants having low critical micelle concentration.
Abstract:
Resin compositions containing at least one fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule and at least one non−fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule; aqueous emulsion resin compositions containing at least one hardener selected from the group consisting of isocyanate, melamine, hydrazide, carbodiimide, silane and epoxy compounds; and aqueous emulsion resin compositions containing at least one chemically bonded product of a fluoroolefin polymer and a non−fluoroolefin polymer bonded to each other via at least one covalent bond at a terminus and/or a side chain of the molecules wherein one or both of the fluoroolefin polymer and the non−fluoroolefin polymer have crosslinkable group(s).
Abstract:
Emulsion polymer compositions are disclosed which comprise a first polymer having amine groups and a second polymer having functional groups which are reactive with the amine groups in the first polymer. The compositions are capable of crosslinking efficiently at ambient and elevated temperatures and also having excellent resistance to premature crosslinking during storage. The compositions are useful, for example, in coatings, adhesives, caulks, sealants, additives and modifiers. Processes for preparing the compositions are also disclosed.
Abstract:
The invention relates to a method of bonding together surfaces of two or more elements, whereby at least one of the two or more elements is a mineral wool element, said mineral wool element(s) being bound by a mineral wool binder, the method comprising the steps of providing two or more elements; applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other; curing the adhesive, wherein the adhesive comprises at least one protein; at least one phenol and/or quinone containing compound, and/or at least one enzyme.
Abstract:
Provided is a method for preparing a latex composition for dip forming, the method including: (a) preparing a monomer mixture including a conjugated diene-based monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer; (b) introducing starch, an emulsifier and an inorganic solvent into the monomer mixture; and (c) preparing a copolymer latex by introducing a polymerization initiator, wherein the copolymer includes the starch in a main chain thereof.