Abstract: A novel polymerizable composition, which can be used in 1K aerosol can systems for forming a foam, include a reactive precursor mixture, which is subjected to one or more deoxygenation measures so that it does not react during storage, and an alkyl metal compound, such as an organic borane compound as initiator. Since the initiation of the polymerization is enabled by oxygen, particularly oxygen from ambient air, the curing of the composition is not dependent on ambient moisture and proceeds even at low temperatures, including those below 0° C. The composition has a fast curing time when contacted with oxygen or air, and the resulting final cured product has a high quality.

Abstract: A one component precursor for the polymeric foam (OCF) composition comprising a very low amount of free monomeric MDI. The present OCF composition may be obtained without any free MDI removal step, and without the addition of extra solvent to compensate for the substantially lower amount of free MDI, compared with traditional compositions. The present composition comprises a source of free NCO of functionality of at least 2.6, a tri- or higher functional alcohol, all polyols being characterized by a rather low molecular weight and at least a specific mono-functional alcohol as well as an isocyanate end-capped prepolymer of toluene diisocyanate (=end capped TDI). The OCF composition is suitable for being dispensed from a pressurized can with a blowing agent.

Abstract: The present invention is a valve for a container. The valve includes a grommet defining a channel with an inlet end and an outlet end. The valve has a stem, slideably arranged in the channel, and the grommet includes a first part provided at the inlet end and a second part provided at the outlet end. The first part has a hardness greater than the hardness of the second part.

Abstract: A pressurized can containing a polymer foam composition for use in one component and two component foams, with the polymer foam composition having an unsaturated resin and an oligomeric acrylic resin, wherein the composition has a cure rate of maximum 3 hours.

Abstract: A pressurized container for dispensing a 1K adhesive or sealant composition is disclosed. The container has an outer container with at least one dispensing opening and a deformable inner container to be filled with the 1K composition. The inner container is accommodated in the outer container and also has a dispensing opening. The inner container is connected to the outer container. The outer container has a pressure generator containing an amount of activated carbon having a propellant gas adsorbed thereon.

Abstract: The present invention is a valve for a container. The valve includes a grommet defining a channel with an inlet end and an outlet end. The valve has a stem, slideably arranged in the channel, and the grommet includes a first part provided at the inlet end and a second part provided at the outlet end. The first part has a hardness greater than the hardness of the second part.

Abstract: A one component precursor for the polymeric foam (OCF) composition comprising a very low amount of free monomeric MDI. The present OCF composition may be obtained without any free MDI removal step, and without the addition of extra solvent to compensate for the substantially lower amount of free MDI, compared with traditional compositions. The present composition comprises a source of free NCO of functionality of at least 2.6, a tri- or higher functional alcohol, all polyols being characterized by a rather low molecular weight and at least a specific mono-functional alcohol as well as an isocyanate end-capped prepolymer of toluene diisocyanate (=end capped TDI). The OCF composition is suitable for being dispensed from a pressurized can with a blowing agent.

Abstract: The present invention is directed to a valve (1) for a container comprising a grommet (2) having a plug system (10) and defining a channel (3) with an inlet end (4) and an outlet end (5) and a stem (8) slideably arranged in the channel (3), whereby the grommet (2) comprises at least two parts (7) and (8) sealingly engaged, said first part (7) having protrusion within said second part (8).

Abstract: A leach proof microcapsule containing hydrophobic active molecules, wherein the microcapsule shell breaks upon exposure to a positive pressure drop across the inner and outer sides of the shell, 0<?P=Pin?Pout>5 bar, wherein Pin and Pout are the pressures in, respectively, out of the microcapsule. The microcapsule shell consists of a alkylated organosilica compound, either fully alkylated or having an alkylation degree comprised between 2 and 25 mol. %, preferably between 5 and 20 mol. %, more preferably between 8 and 15 mol. %. The microcapsules of the present invention are particularly suitable for use in compositions for active-catalyzed polymerization reactions to form sealants, foams, coatings or adhesives.

Abstract: A pressurized can containing a polymer foam composition for use in one component and two component foams, with the polymer foam composition having an unsaturated resin and an oligomeric acrylic resin, wherein the composition has a cure rate of maximum 3 hours.

Abstract: The present invention concerns a valve for a container, the valve comprising: a grommet defining a channel with an inlet end and an outlet end; a stem, slideably arranged in said channel; the grommet comprising a first part provided at said inlet end and a second part provided at said outlet end, wherein the first part has a hardness greater than the hardness of the second part.

Abstract: The invention is directed to a polymer foam precursor composition comprising 1 to 60%, preferably 5 to 30% by weight, of a biodiesel obtained by transesterification of vegetable oils. The polymer foam is advantageously a polyurethane foam and the biodiesel is a mixture of methyl and or ethyl fatty acid esters. The biodiesel is a latent hardener and/or extender and/or liquid filler The composition is advantageously used in pressurized vessel or aerosol type cans.

Abstract: The invention concerns an improvement to the design of a tilting/gun valve, more particularly regarding the problem of sticking/blocking. The valve comprises a cup (5), a stem (10) with an enlarged circular base (21) end extending perpendicularly and, therebetween, a grommet (22) made of an elastomer polymer. The grommet (22) is provided with a flat lower surface extending essentially on all the flat upper surface of the enlarged base of the stem to secure the sealing effect. The grommet (22) height H below the cup is less than 4 mm.

Abstract: The invention concerns an improvement to a grommet, preferably for a tilting valve of a container, which increases the protection against moisture diffusion and uptake, in order to avoid blocking or leaking of the valve. The valve comprises a grommet (1) having at least one part made (1A) of non-thermoplastic rubber and another part (1B) made of a thermoplastic material, the latter being in contact with the content of the container. This valve is preferably made by the dual injection technique. The non-thermoplastic rubber may be EPDM or Santoprene and the thermoplastic rubber may be Trefsin.