摘要:
The invention provides a process, and product thereof, for forming a chemically resistant fusion bonded seal between chemically dissimilar materials by use of a chlorinated polyolefin film for protective garments. The process involves placing the chlorinated polyolefin film between two dissimilar films such as a facepiece and the fabric film of the garment and applying heat and pressure. The resulting fusion bonded film composite is strong, flexible and upon the application of sufficient stress exhibits total cohesive rupture failure.
摘要:
The invention provides a process, and product thereof, for forming a chemically resistant fusion bonded between chemically dissimilar materials by use of an acid-based terpolymer for protective garments. The olefin terpolymers are preferably copolymers of an olefin, an acid and an ester. The process involves placing the olefin terpolymer film between two dissimilar films such as a facepiece and the fabric material of the garments and applying heat and pressure. The resulting fusion bonded film composite is strong, flexible and upon the application of sufficient stress exhibits total cohesive rupture failure.
摘要:
The instant invention provides a non-asbestos friction material and method of making therefor having from about 2 to 20 wt % of carbonaceous fibers. The remainder of the friction material is an auxiliary material and a thermosetting resin. The carbonaceous fibers are derived from oxidized polyacrylonitrile based fibers. The wt % of bond carbon in the carbonaceous fibers is about 65 to 80.
摘要:
The present invention relates to antistatic polymers containing a mixture of a thermoplastic resin and about 8-20% by weight of conductive partially carbonized chopped linear carbonaceous fibers. The chopped carbonaceous fibers have a carbon content of about 70-85% by weight and an electrical resistivity of about 10.sup.-2-10.sup.3 ohm-cm. The composite has a surface resistivity of about 10.sup.4 -10.sup.10 ohms/square. These intermediate surface resistivities make the composite an excellent choice for use with plastic parts that come into direct contact with electronic components and circuitry.
摘要:
There is provided complexes of antifungal or antimicrobial compounds having at least one site which is a quaternary ammonium, amine, a mixture thereof, or the salts thereof. The complexes are useful in compositions for deodorizing and/or preventing the growth of odor causing microbes or fungus. The compositions are particularly useful for deodorizing footwear.
摘要:
Lightweight armor or high impact structures comprising lamina-like structures comprising zones of decreasing Young's modulus and increasing elongation characteristics. The structure contains at least one ionomer composite having aramid or linearly crystalline polyethylene fibers arranged to dissipate impact forces laterally.
摘要:
There is provided a process for recovering high purity litharge PbO from spent lead acid battery paste at low temperatures and the further preparation of highly pure lead oxides and Pb(OH)2.
摘要:
The invention relates to fire and impact resistant windows and building structures which contain a window composed of a specific order of layers containing a novel fire resistant layer. The invention further pertains to coating compositions for use with structures containing the windows.
摘要:
The disclosure defined by this invention provides a method for extruding thermoplastic polymers which includes the step of creating high pressure steam in the extruding apparatus so as to prevent scorching and to solubilize contaminants. The method can be used in a neutralization step of ionomers in an extrusion process to obtain an extrudate having good light transmission and improved impact resistance.
摘要:
The present invention provides electrolytes for use in electronic devices at temperature below −50° C. consisting of a mixture, eutectic or tereutectic of at least two low viscosity aprotic solvents, acetonitrile, and a mixture of conductive salts having a molecular weight up to 240.