Abstract: The present invention relates to core-shell capsules prepared with linear and/or branched and cyclic aliphatic polyisocyanates. In particular, the present invention discloses a core-shell capsule, wherein the shell comprises or consists of a polymeric material which is produced or producible by reacting two components, the first component comprising or consisting of at least one linear aliphatic polyisocyanate and/or at least one branched aliphatic polyisocyanate having more than one isocyanate group, respectively, and at least one cyclic aliphatic polyisocyanate having more than one isocyanate group, the second component comprising or consisting of one or more crosslinking agent(s). Furthermore, a product comprising the present core-shell capsule, a process for producing the present core-shell capsules and the use of the present core-shell capsules is provided.

Abstract: Described is a fragrance control release system which is an emulsifier-free, single phase, nonporous, continuous, permeable polymeric film having a substantially uniform thickness of from about 1 up to about 150 microns, having entrapped and dissolved therein molecules of at least one fragrance substance capable of evolving from said film into the environment proximate said film by means of molecular diffusion at a permeation rate of from about 1×10−7 up to about 0.1 mg-mm/cm2-min in a sustained and controlled release manner. Also described is a process for using the aforementioned system for imparting a fragrance into the environment above the unobstructed outer surface of the aforementioned polymer film which is coated on the surface of a solid or semi-solid support, e.g., a solid surface or human epidermis.

Abstract: Described are flavor composition, flavor component, perfume composition and perfume component-containing microparticles which are particulate matrices composed of: (a) an olfactorily active component (e.g., perfume component); (b) silica; and (c) a saccharide composition which is a mixture of mannitol and maltose. The microparticles are useful in augmenting, enhancing and/or imparting aroma and/or taste (over relatively long periods of time in a controllably releasable manner) to perfume compositions, perfumed articles (e.g., deodorancy and antiperspirant sticks), foodstuffs, chewing gums, beverages and the like. Also described is a process for preparing the above-mentioned microparticles using, in sequence, (1) adsorption of the olfactorily active material onto silica followed by (2) a blending/extrusion step followed by (3) at least one particularization step.

Abstract: Described are flavor composition, flavor component, perfume composition and perfume component-containing microparticles which are particulate matrices composed of: (a) an olfactorily active component (e.g., perfume component); (b) silica; and (c) a saccharide composition which is a mixture of mannitol and maltose. The microparticles are useful in augmenting, enhancing and/or imparting aroma and/or taste (over relatively long periods of time in a controllably releasable manner) to perfume compositions, perfumed articles (e.g., deodorancy and antiperspirant sticks), foodstuffs, chewing gums, beverages and the like. Also described is a process for preparing the above-mentioned microparticles using, in sequence, (1) adsorption of the olfactorily active material onto silica followed by (2) a blending/extrusion step followed by (3) at least one particularization step.

Abstract: Described are controlled, time-release microparticulate active and bioactive compositions (including perfuming compositions) for targeted delivery to surfaces such as skin, hair and fabric and the environment proximate thereto, where the active and bioactive materials have a calculated log.sub.10 P values of between 1 and 8 (P being the n-octanol-water partition coefficient). Such compositions include the active or bioactive material in single phase, solid solution in a wax or polymer matrix also having coated thereon and/or containing a compatible surfactant. Also described are processes and apparatus for preparing such compositions and processes for using same. Furthermore, certain component(s) of the aforementioned compositions in combination with one another are novel, and other components have novel uses in increasing fragrance substantivity, particularly in hair care preparations such as hair gels and shampoos.

Abstract: Described is a fragrance control release system which is an emulsifier-free, single phase, nonporous, continuous, permeable polymeric film having a substantially uniform thickness of from about 1 up to about 150 microns, having entrapped and dissolved therein molecules of at least one fragrance substance capable of evolving from said film into the environment proximate said film by means of molecular diffusion at a permeation rate of from about 1.times.10.sup.-7 up to about 0.1 mg-mm/cm.sup.2 -min in a sustained and controlled release manner. Also described is a process for using the aforementioned system for imparting a fragrance into the environment above the unobstructed outer surface of the aforementioned polymer film which is coated on the surface of a solid or semi-solid support, e.g., a solid surface or human epidermis.

Abstract: Described is a composition of matter particularly useful in fabricating toilet rim blocks consisting of:(a) extruded polyvinyl alcohol or partially hydrolyzed polyvinyl acetate with the maximum mole ratio of acetyl moiety:hydroxyl moiety being about 3:1 having a number average molecular weight of from about 15,000 up to about 68,000 containing 0 up to about 13% by weight of plasticizer;(b) from about 1 up to about 20% by weight of a compatible fragrance contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(c) from 0 up to about 20% by weight of a "foaming agent" which is a first surfactant and which can be a detergent, contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(d) from 0 up to about 20% by weight of a hydrophobic silica contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(e) from 0 up to about 20% by weight of at least one second surfactant in addition to the "foaming agent";(f) from 0 up to about 5% by weight of a

Abstract: A method is disclosed for producing a fragrance containing solid particle for incorporation into laundry detergent by selecting a fat component such as a fatty acid glyceride, heating said fat component to an elevated temperature sufficient to form a molten melt thereof, selecting a solid surface active agent from the group consisting of SPAN.RTM. surfactants with an HLB of 4.3 to 8.6, heating the surface active agent to form a molten melt thereof and then combining the melts with an aroma chemical to form a mixture. The melt is rapidly cooled to form a solid material.

Abstract: A hydrophilic, thermoplastic polyurethane polymer of improved dimensional stability and mechanical strength having an average molecular weight of from about 10,000 to about 200,000 produced by reacting (A) an organic diisocyanate with (B) a blend of glycol components comprising (i) ethylene glycol and/or diethylene glycol, (ii) a polyoxyethylene glycol having an average molecular weight of from about 400 to about 20,000 and (iii) a polyoxypropylene glycol having an average molecular weight of from about 200 to about 2500, and (C) water in an amount up to about 0.5% by weight of the reaction mixture. The polymers are particularly useful in the form of a film product such as gloves and condoms. Other uses are as low friction coatings, body implants and active agent release media.

Abstract: Hydrophilic polyurethane polymers having carboxy groups in the polymer backbone are prepared by reacting a polyol component, an ester of a carboxylic acid and a polyisocyanate to form a polyurethane intermediate. The intermediate is then saponified and the saponified product neutralized to form free carboxy groups. The water absorption of the intermediates and saponified polymers is above 10% and the polyurethanes may range from rigid solids to gel-like, high water absorptive polymers. Neutralization of the carboxy group with ammonium hydroxide produces a water soluble polyurethane which becomes water insoluble when the ammonia is driven off. The carboxy groups introduced into the polymeric chain provide reactive sites for attachment of various side-groups and also allow for various curing procedures.