Abstract:
A branched random aliphatic-aromatic copolyesters suitable for foaming has increased melt viscosity and melt strength during extrusion and comprises repeating units of: [-{(O-R -O)a-(CO-R -CO)b}-{(O-R -O)c-(CO-Ar-CO)d}-](BA)X. The mole percent of the acid components and diol components are each based on 100 mole percent. The aliphatic acid residue, -CO-R -CO-, is present in an amount b ranging from 30 to 95 percent and the aromatic acid residue, -CO-Ar-CO-, is present in an amount d ranging from 5 to 70 percent. The diol residues, -O-R -O- and -O-R -O-, are present in an amount a of 0 to 100 mol percent and in an amount c of 100 to 0 mol percent, respectively. The branching agent, BA, is present in an amount x of 0.01 to 10 weight percent based on the total weight of acid residues, diol residues and branching agent. A foamed article of the branched random aliphatic-aromatic copolyesters is disclosed.
Abstract:
Composition comprising cyclotrimethylene-trinitramine (RDX) coated with a shock sensitivity reducing agent whereby the shock sensitivity of the composition is reduced a statistically significant amount.
Abstract:
A multi-layer electrostatic dissipative structure that is clear to translucent, washable and thermoformable comprises at least one outer layer and a core layer. Preferably, two outer layers are utilized with the core layer sandwiched therebetween. The outer layers are a blend of amorphous or semi-crystalline copolyester and an electrostatic dissipative polymer in an amount sufficient to impart a surface resistivity of about 10 to 10 Ohms/sq. The core layer is a polymer having a haze value of less than five percent, preferably amorphous or semi-crystalline copolyester. The multi-layer structure may additionally have a tie layer between the core layer and each of the outer layers.
Abstract:
The present invention relates to hemostatic composition comprising 1 to 90 weight percent of vitamin E or a derivative of vitamin E, 1 to 95 weight percent of oxidized cellulose, and 0.1 to 75 weight percent of water. The hemostatic composition may be formed intot pellets, powder, paste, gum, gel, or liquid suitable for molding to conform to the contours of a wound.
Abstract:
A process for the condensation of aldehydes is disclosed in which an aldehyde containing an alpha hydrogen atom and having the formula R1CHO, wherein R1 is selected from alkyl having one to twelve carbon atoms, and aralkyl having one to fourteen carbon atoms, is combined with hydrated MgO under reaction conditions to form a reaction product mixture comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. In a second embodiment, a first composition selected from aldehydes containing an alpha hydrogen atom and having the formula R1CHO, wherein R1 is selected from alkyl having one to twelve carbon atoms, and aralkyl having one to fourteen carbon atoms, is combined under reaction conditions with a second different composition selected from aldehydes having the formula R2CHO, wherein R2 is selected from H, alkyl having one to twelve carbon atoms, and aralkyl having one to fourteen carbon atoms, and with hydrated MgO, to form a reaction product mixture comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. Further according to the invention, the aldol or aldehyde formed may be separated from the reaction product mixture, and recovered or treated as desired, or the reaction product mixture may be further directly treated, such as by hydrogenation, to produce a desired product admixture.
Abstract:
This invention provides certain water-dispersible polyesters which are useful as stabilizers in the preparation of vinyl and acrylic latexes. The polyester/acrylic hybrid latexes so provided have a high solids content and contain markedly reduced levels of coagulum.
Abstract:
This invention is directed to an air freshener composition containing a fiber pad comprising at least one needle-punched, nonwoven, hydrophilic fiber wherein the fiber has a capillary structure and deep grooves or channels along the longitudinal axis of the fiber, a fragrance incorporated into said fiber pad, wherein the fiber pad is enclosed by a container having air passageways to allow for the fragrance to escape into the surrounding environment.
Abstract:
A removable coating composition is disclosed containing oxidized polyolefin wax, paraffin wax, and acrylic copolymer. Also, disclosed is a process of protecting surfaces by applying the coating composition in an aqueous emulsion to a surface and drying. The resulting coated surface is protected such that when coated with graffiti, the graffiti and coating are easily removed with hot water or steam.
Abstract:
A process for the preparation of 1,2-bis-(acyloxylates) comprises acylation of epoxides with carboxylic anhydrides in the presence of a catalytic composition containing a tertiary amine and a carboxylic acid. Preferably, the carboxylic acid is a conjugate acid of the carboxylic anhydride. The carboxylic acid acts as a co-catalyst and its use in conjunction with the tertiary amine significantly increases the rate of reaction and results in higher selectivity. The catalytic composition may be prepared prior to acylation or in situ providing application versatility.
Abstract:
A method for producing a processed polymeric sheet to be adhesively secured to a cover to form a seal, the sheet having properties such that the seal does not have branching peel defects when it is separated. A polymeric sheet is formed from a source of polymeric material, and at least one side of the polymeric sheet is coated with silicone. The polymeric sheet is further processed while implementing a static neutralization method to substantially eliminate electrostatic discharge across the polymeric sheet during such further fabrication, producing a processed polymeric sheet. Preferably the polymeric material is selected from the group consisting of polyethylene, polystyrene, polyester, polyvinyl chloride, polypropylene, acrylics, acrylonitrile, polycarbonates, polyimide, and cellulosics. The static neutralization method, in different preferred embodiments, may be impregnating the polymeric source with a conductive material to dissipate a static charge on the polymeric sheet, coating the polymeric sheet with a hygroscopic material to attract moisture and dissipate a static charge on the polymeric sheet, at least partially ionizing an air mass and passing the polymeric sheet through the air mass to neutralize a static charge on the polymeric sheet, or passing the polymeric sheet near static neutralization bars to neutralize a static charge on the polymeric sheet.