摘要:
Disclosed is a polyurethane based composition for treating textiles to provide such treated textile with oil, water or oil and water repellency. The composition comprises a polyfunctional liquid polyurethane-containing adduct wherein the adduct contains as a first functional group at least one structo-terminal blocked isocyanate moiety per molecule, and at least one second structo-terminal functional group per molecule which is a perfluoro or siloxane moiety.
摘要:
Disclosed is a liquid urethane containing adduct; a process for the preparation thereof; and applications therewith. More specifically this invention relates to a stable adduct which is a liquid at room temperature and which contains a plurality of urethane linkages, and yet which is substantially free of any isocyanate functionality or isocyanate-reactive functionality. Such adducts can be used as quenchants, lubricants, or surfactants.
摘要:
Apparatus (10) for incorporating blowing agents into a liquid material provides a high pressure liquid storage and mixing tank (20) containing a mixture of liquid material (M) under pressure; means for delivering (59) a pre-determined quantity of at least one blowing agent into the mixture in minute bubbles having an average diameter of from about less than 0.5 micron up to about 100 microns; and means for uniformly distributing (60) the blowing agent throughout the liquid material. Apparatus (100) for measuring the volumetric expansion potential of a mixture of blowing agent and liquid material is also provided. It includes a high pressure liquid storage and mixing tank (106) containing a mixture of liquid material (M) and at least one blowing agent under pressure; first and second chambers (140, 141) communicating with each other and with the tank; first and second means for transferring (142, 143) the mixture into and out of the first and second chambers; and first and second means for measuring (144, 145) the volumes displaced by the mixture in the first and second chambers, wherein the second measuring chamber has a volume at least one order of magnitude greater than the first chamber. Finally methods are provided for use of the foregoing apparatuses.
摘要:
Disclosed is a process for preparing nanoscale metal-based powders from a metal salt and an amphiphilic copolymer containing ethylene oxide. The copolymer and metal salt are mixed to form a metal salt/copolymer paste which is then calcined at a temperature sufficient to remove water and organics and to form a metal oxide.
摘要:
The invention is a catalytic device comprised of a catalyst support of fused ceramic grains and a catalyst that is surface-bound to at least a portion of the ceramic grains, incorporated into at least a portion of the ceramic grains or combinations thereof, wherein the grains and catalyst form a surface structure that has a box counting dimension of greater than 1.00 or the box counting dimension has at least one step change when measured from a box size “d” of at least about 1 micrometer to at most about 1 millimeter. The invention is particularly useful in making a catalytic converter or catalytic converter-soot trap.
摘要:
Apparatus (10, 180, 260, 270) for incorporating blowing agents into a liquid material provides a high pressure liquid storage and mixing tank (20, 181, 261, 271) containing a mixture of liquid material (M) under pressure; means for delivering (59, 220, 232, 285) a pre-determined quantity of at least one blowing agent into the mixture in minute bubbles or droplets having an average diameter of from about less than 0.2 micron up to about 100 microns; and means for uniformly distributing (60, 110, 237, 276) the blowing agent throughout the liquid material. Apparatus (100, 260, 270) for measuring the volumetric expansion potential of at least one blowing agent and a liquid material component (M) within a closed system comprises a high pressure tank (106, 181, 261) containing liquid material and at least one blowing agent under pressure; means for measuring (135, 240) the volumetric expansion potential of the mixture, providing first (136, 250) and second (138, 251) chambers, communicating with each other and with the tank; means for transferring (142, 143, 243) the mixture into and out of the first and second chambers, the second measuring chamber having a volume sufficiently greater than the volume of the first chamber whereby at least some of the blowing agent will leave the mixture; means for measuring (164, 252) the pressure in the first chamber; and means for measuring (144, 145, 253) the volumes displaced by the mixture within the first and second first chambers. Finally methods are provided for use of the foregoing apparatuses.