Abstract: What is disclosed are novel hot melt adhesives having pressure sensitive properties that are comprised of a combination of two acrylic-based copolymers containing the novel monomer 1(2)-methyl-3-oxa-4-oxo-5-aza-nonyl methacrylate, one of the copolymers being a low glass transition temperature (Tg) compolymer and the other a high Tg copolymer and which hot melt adhesives, by means of reversible hydrogen bond formation and dissociation, possess the reversible properties of providing a strong cohesive strength at ambient temperature but also having a melt viscosity at elevated coating temperatures such that it can be used in hot melt coating equipment; a process for making said hot melt adhesives; and a process for making adhesive tapes and bandages using said adhesives.

Abstract: A remote sensing device comprising light generating means positioned in the vicinity of an event being measured and means for conducting the generated light to a remote location. The light generating means advantageously comprises an optical emission mechanical transducer or bioluminescent device, or current generating means coupled with a light emitting diode, semiconductor laser or filament bulb. Also disclosed is a method according to the invention.

Abstract: What is disclosed are novel hot melt adhesives having pressure sensitive properties that are comprised of a combination of two acrylic-based copolymers containing the novel monomer 1(2)-methyl-3-oxa-4-oxo-5-aza-nonyl methacrylate, one of the copolymers being a low glass transition temperature (Tg) copolymer and the other a high Tg copolymer and which hot melt adhesives, by means of reversible hydrogen bond formation and dissociation, possess the reversible properties of providing a strong cohesive strength at ambient temperature but also having a melt viscosity at elevated coating temperatures such that it can be used in hot melt coating equipment; a process for making said hot melt adhesives; and a process for making adhesive tapes and bandages using said adhesives.

Abstract: Novel acrylate, hot melt, pressure-sensitive adhesives are disclosed which are polymerized compositions of:______________________________________ Starting Monomer %, by Polymer Weight ______________________________________ 2-ethylhexyl acrylate (2-EHA) 20-80 n-butyl acrylate (BA) 0-45 isobutyl methacrylate (IBMA) 15-25 N--vinyl caprolactam (NVCL) 10-25 ______________________________________useful for medical products such as ostomy seals, adhesive tapes and bandages, wound drainage adhesive seals, wound dressings and the like that adhere well to human skin even under moist conditions.

Abstract: An intrusion-free optical cable of the type wherein one or more signal-carrying optical fibers are carried within an outer cladding which will self-destruct, with or without destruction of the inner signal-carrying fiber, in the event an attempt is made to penetrate the outer cladding and extract a signal. Self-destruction is sensed to indicate that an attempt has been made to penetrate the outer cladding. Various embodiments of the invention are shown including a cladding formed from tempered glass which will shatter when an attempt is made to penetrate it. In another embodiment, a laser is employed which directs a light beam through the cable. This light beam is of sufficient power to melt, or at least raise the temperature of, the cladding or fiber at a point where penetration is attempted such that the severance or rise in temperature can be detected.

Abstract: High molecular weight, colorless polyesters suitable for shaping into filaments and films are obtained using novel catalysts selected from the group consisting of reaction products of specified antimony or zirconium (IV) compounds with (1) a carboxylate of calcium, manganese or zinc and (2) an acid anhydride, alcohol or glycol. The molar ratio of the antimony or zirconium compound to the aforementioned carboxylate is between 1:1 and 1:6. The catalysts are active in both transesterification and polycondensation. The rates of these reactions are more rapid than can be achieved using prior art catalysts.

Abstract: The combination of a diorganotin sulfide, -polysulfide, -dithiocyanate, bis(thiocyanato diorganotin) sulfide or bis(thiocyanato diorganotin) oxide with a tertiary amine functions as a latent catalyst for rigid polyurethane foams. Latency is not observed using a tertiary amine with other sulfur-containing organotin compounds.

Abstract: High molecular weight, colorless polyesters suitable for shaping into filaments and films are obtained using novel catalysts selected from the group consisting of reaction products of specified antimony or zirconium (IV) compounds with 1) a carboxylate of calcium, manganese or zinc and 2) an acid anhydride, alcohol or glycol. The molar ratio of the antimony or zirconium compound to the aforementioned carboxylate is between 1:1 and 1:6. The catalysts are active in both transesterification and polycondensation. The rates of these reactions are more rapid than can be achieved using prior art catalysts.