The present invention relates to an extruded expanded thermoplastic polyurethane elastomer bead and a preparation method therefor. The bead consists of components of the following parts by weight: 100 parts by weight of a thermoplastic polyurethane elastomer, 0.01-0.5 parts of a foaming nucleating agent, and 0.01-0.2 parts by weight of an antioxidant. The preparation method comprises: mixing materials, then putting the mixture into an extruder for granulation to produce a particle raw material suitable for foaming, finally, putting the particle into a foam extruder, and die foaming then underwater pelletizing, thus obtaining a product bead. The present invention utilizes an extrusion method to prepare expanded thermoplastic polyurethane beads. Control of the working conditions of the foaming process could lead to acquiring an expanded=bead of a controllable density, the cell density evenly distribute. The overall production process is easy to operate. Without any special limit or requirement placed on the equipment, this method is suitable for industrial continuous production.

The present invention provides a polycarbonate composition containing hydroxy aluminum hydroxide which exhibits increased gloss level. This effect is seen in polycarbonate blend or blends of polycarbonate and polyesters. This additive is effective in increasing the gloss level of polymer or polymer blend with gloss levels lower than 80 at 20 degree incident angle.

A compound represented by formula: is disclosed. R is hydrogen or alkyl; X is alkylene; Y is a bond, ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, thiourea, alkylene, arylalkylene, alkylarylene, or arylene, wherein alkylene, arylalkylene, alkylarylene, and arylene are optionally at least one of interrupted or terminated by at least one of an ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, or thiourea; and Z is an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrenyl, or a terminal alkenylene having at least three carbon atoms. A composition including the compound, and a method of determining the degree of cure of a curable polymeric resin are also disclosed. ##STR00001##

The present invention relates to materials for making cable jackets, particularly for riser and plenum cables. The materials provide low flammability and allow the cable to meet UL 910 or NFPA-262 or UL 1666 specifications. The composition contains polyvinyl chloride (PVC) resin, a plasticizer, ammonium octamolybdate, a molybdate compound, a stabilizer, a lubricant, aluminum trihydrate, and either i) metal oxide particles, ii) a polytetrafluoroehtylene (PTFE), iii) an intumescent compound, or iv) combinations thereof.

Aqueous inkjet ink compositions are useful in inkjet printing processes and can be used individually or as part of an inkjet ink set. Each aqueous inkjet ink composition has a dynamic viscosity of 5 centipoise (5 mPa-sec) or less at 25° C., and consists essentially of: (a) a polymer-dispersed pigment colorant at 0.9-6 weight %; (b) a composition consisting of compounds represented by the following Structure (I):
HO—CH.sub.2—CH.sub.2—R   (I)
wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, at 0.5-2 weight %; (c) a water-soluble humectant, co-solvent, or both, at than or equal to 20 weight %. Each polymer-dispersed pigment colorant has a 50.sup.th percentile particle diameter of less than 70 nm and a 95.sup.th percentile particle diameter of less than 150 nm, as measured using a dynamic light scattering particle size analyzer.

Flame retardant polymer compositions comprising certain polymers, a flame retardant material obtained by heating certain phosphonic acid salts at temperatures over 200° C. and certain clays or metal compounds such as select metal borates, oxides, hydroxides, oxide hydroxides etc., are readily processed at elevated temperatures and under high stress conditions whereas similar compositions without the clays or metal compounds of the invention are prone to decomposition. For example, polyamide compositions comprising the flame retardant material obtained by heating certain phosphonic acid salts at temperatures over 200° C., hydrotalcite clays, and/or borates, oxides, hydroxides, oxide hydroxides of zinc or calcium, are highly stable to thermal processing under strenuous conditions such as high temperature extrusion.

A lightweight ablator formulation has been developed which offers superior thermal performance compared to current state of the art ablator formulations. The lightweight ablator formulations described herein typically include at least one endothermically decomposing (energy absorbing) material with a fluxing agent resulting in significantly reduced backface temperature response and a more stable surface. According to one implementation the ablator composition comprises about 30 to about 70 percent by weight of a base silicone resin, about 25 to about 67 percent by weight of a low-density filler, about 3 to about 7 percent by weight of a curing agent and greater than 0 and up to about 10 percent by weight of a boron-containing compound.

A lightweight ablator formulation has been developed which offers superior thermal performance compared to current state of the art ablator formulations. The lightweight ablator formulations described herein typically include at least one endothermically decomposing (energy absorbing) material with a fluxing agent resulting in significantly reduced backface temperature response and a more stable surface. According to one implementation the ablator composition comprises about 30 to about 70 percent by weight of a base silicone resin, about 25 to about 67 percent by weight of a low-density filler, about 3 to about 7 percent by weight of a curing agent and greater than 0 and up to about 10 percent by weight of a boron-containing compound.

Two-part cyanoacrylate/cationically curable adhesive systems, are provided.

Two-part cyanoacrylate/cationically curable adhesive systems, are provided.