81 |
Super Elastic Epoxy Hydrogel |
US12373245 |
2007-07-10 |
US20090317442A1 |
2009-12-24 |
Mark Banister; Dominic McGrath |
Described is a super elastic epoxy hydrogel that is easy to manufacture and can be engineered for various performance enhancements of the polymer. Also described are methods of enhancing the performance of this hydrogel and other hydrogels. Various polymer hydrogel composites, structures, and their uses are included, such as the actuator element comprising the hydrogel of the invention depicted in FIG. 2. |
82 |
Thermoplastic Polyurethanes |
US11774766 |
2007-07-09 |
US20080146749A1 |
2008-06-19 |
NORBERT POHLMANN; Andreas Przybilski; Rolf Steinberger |
Thermoplastic polyurethanes are obtainable by reacting (a) isocyanates with (b1) polyesterdiols having a melting point greater than 150-C, (b2) polyetherdiols and/or polyesterdiols, each having a melting point of less than 150-C and a molecular weight of from 501 to 8 000 g/mol, and, if required, (c) diols having a molecular weight of from 62 to 500 g/mol. |
83 |
Patch repair system for collapsible fuel and water tanks |
US10739361 |
2003-12-18 |
US07306851B2 |
2007-12-11 |
Dattatreya Ramesh Panse |
The invention is a patch system for repairing collapsible fuel tanks, water tanks, inflatable boats, and other articles fabricated from a flexible structural fabric coated with a polymer. The coated structural fabric is made of nylon or polyester synthetic fibers or a blend thereof, which are coated with a thermoplastic elastomer. The structural coated fabric is coated with a thermoplastic elastomer that is a urethane (TPU), or a TPU alloy polymer. Likewise, the patch is a urethane adhesive having a latent cure coated on a TPU film. The patch can also have an integral reinforcing fabric for applications requiring a higher tensile patch. In the invention, the urethane adhesive of the patch is solvent activated by the application of a thin coating of a volatile, substantially low odor, fugitive solvent like acetone or MEK. While in the activated state, the adhesive has much less cyrstallinity and a lot more tack. The solvent activated adhesive has good wetting, and aggressively wets out and adheres to the surface of the TPU coating on the tank. The activated adhesive side of the patch is pressed against the surface of the tank. The solvent will also partially etch the thermoplastic urethane polymer coating on the tank fabric, and rapidly diffuses therein, ultimately evaporating to the surroundings. The cross-linkable urethane adhesive contains a blocked isocyanate and, preferably, an uretdione. The reduced cyrstallinity in the adhesive imparts greater freedom to the blocked isocyanate that can, depending on the equilibrium of the system, begin to cross-link the adhesive. The curing process can be accelerated through the application of heat, albeit will slowly progress to a cured state at ambient conditions. |
84 |
Curable extruded adhesive laminate system for manufacturing collapsible structures |
US10723145 |
2003-11-26 |
US07259115B2 |
2007-08-21 |
Dattatreya Ramesh Panse |
The invention is a heat curable extruded adhesive laminate system for producing collapsible tanks. The laminate is a composite of a fabric; an extruded linear hydroxyl adhesive having an uretdione that serves as a latent thermally activated curing component, and a high cyrstallinity thermoplastic polyurethane. In the system, panels cut from the adhesive laminate are assembled and seamed in a compression press operating at about 260° F. to about 350° F. The bonding process takes about 20-45 minutes, which causes the latent thermally activated curing component to cure the adhesive. Following compression heating in the press, the resulting seams have a strength that exceeds the minimum acceptable performance of 25 lbs/in, after being immersed in water and/or fuel at 160° F. for six weeks. |
85 |
Nematic elastomer fiber with mechanical properties of a muscle |
US10923154 |
2004-08-18 |
US07122598B2 |
2006-10-17 |
Jawad Naciri; Hong Jeon; Patrick Keller; Banahalli R. Ratna |
A method of making a liquid crystalline fiber is disclosed. A copolymer having a liquid crystalline side group and a crosslinking side group is crosslinked. A fiber of the crosslinking copolymer is drawn before the crosslinking reaction is complete. |
86 |
Process for producing porous object |
US10220017 |
2001-02-08 |
US07071241B2 |
2006-07-04 |
Akira Honjo |
The present invention provides a process for producing porous structure having similar properties to that of the porous structure produced with conventional urethane resin solution in organic solvent and suitable for artificial leather, wherein the environmental pollution in the production process with a urethane resin solution in organic solvent and adverse effect on human health caused from remained organic solvent are solved and the problems caused from nonuniform pores produced with urethane resin emulsion are solved.The present invention also provides a production process for porous structure wherein an aqueous urethane resin emulsion to which a highly crystalline substance comprising of a diisocyanate and low-molecular-weight diol is added, or an aqueous emulsion of urethane resin containing the said highly crystalline substance in its polymer chain is heated and gelled with steam with the presence of a pore-forming agent for stabilizing the gel of the said aqueous urethane resin emulsion in the heating and gelling process, and then the gelled aqueous urethane resin emulsion is heated and dried for forming the space of the water into porous structure. In addition, the present invention also provides a process for producing porous structure wherein an aqueous urethane resin emulsion is heated and gelled with steam with the presence of at least one of those selected from the group comprising silica, colloidal silica, silicic acid and silicate for stabilizing the gel of the said aqueous urethane resin emulsion in heating and gelling, and is heated and dried for forming the space of the water into porous structure. |
87 |
Thermo-adherent composition for coil wires |
US11115958 |
2005-04-26 |
US20050244655A1 |
2005-11-03 |
Jerome Fournier; Olivier Pinto |
A thermo-adherent composition for coil wires includes a polyester type thermoplastic polyurethane. |
88 |
Powder coating compositions comprising crystalline urethane acrylates and use thereof |
US10325933 |
2002-12-23 |
US06960620B2 |
2005-11-01 |
Andreas Wenning; Giselher Franzmann; Emmanouil Spyrou |
A radiation-curable powder coating compositions based on crystalline urethane acrylates, which crosslink to light-stable and weather-stable coating films. |
89 |
Segmented polyurethane hotmelt adhesives |
US11042742 |
2005-01-24 |
US20050222363A1 |
2005-10-06 |
Michael Krebs; Uwe Franken; Christoph Lohr |
A reactive hotmelt adhesive is prepared which contains a reaction product of a stoichiometric excess of a polyisocyanate with a hydroxyl-functional polyester-ether block copolymer based on aromatic dicarboxylic acids. The adhesive additionally contains a reaction product of a polyisocyanate and at least one of either a polyether polyol or a polyester polyol. A thermoplastic polymer may also be present. |
90 |
Curable extruded adhesive laminate system for manufacturing collapsible structures |
US10723145 |
2003-11-26 |
US20050112971A1 |
2005-05-26 |
Dattatreya Panse |
The invention is a heat curable extruded adhesive laminate system for producing collapsible tanks. The laminate is a composite of a fabric; an extruded linear hydroxyl adhesive having an uretdione that serves as a latent thermally activated curing component, and a high cyrstallinity thermoplastic polyurethane. In the system, panels cut from the adhesive laminate are assembled and seamed in a compression press operating at about 260° F. to about 350 ° F. The bonding process takes about 20-45 minutes, which causes the latent thermally activated curing component to cure the adhesive. Following compression heating in the press, the resulting seams have a strength that exceeds the minimum acceptable performance of 25 lbs/in, after being immersed in water and/or fuel at 160° F. for six weeks. |
91 |
Hot melt moisture cure polyurethane adhesive with wide range of open time |
US09965769 |
2001-09-27 |
US06844073B1 |
2005-01-18 |
Marietta B. Helmeke; Jorge A. Lavieri |
A hot melt moisture cure polyurethane adhesive composition includes at least one polyurethane prepolymer. The prepolymer includes the reaction product of a polyol component and a polyisocyanate component. The polyol component includes a) at least one amorphous polyester polyol comprising the reaction product of neopentyl glycol, hexanediol and at least one of phthalic anhydride and phthalic acid; b) at least one liquid polyester polyol having a viscosity of greater than about 10,000 cps at 80° C.; c) at least one crystalline polyester polyol having a melting point of from about 40° C. to about 120° C.; and d) at least one thermoplastic polyurethane. |
92 |
Solvent-free two-component curable adhesive composition |
US10082216 |
2002-02-26 |
US06833044B2 |
2004-12-21 |
Akihiro Imai; Kazuaki Imamura; Taiji Morimoto |
The solvent-free two-component adhesive composition of the present invention is prepared by a polyol component (A) and a polyisocyanate component (B), wherein the composition comprises at least one polyol component having crystallinity and selected from the group consisting of a polyester polyol, a polyether polyol, a polycarbonate polyol and a polyurethane polyol in an amount of 3 to 50% by weight relative to the total weight of the components (A) and (B). The adhesive composition has the initial viscosity of about 100 to 1,500 mPa·s (in particular, 100 to 1,000 mPa·s) at 70° C. immediately after the components (A) and (B) are mixed together, and the increasing ratio of viscosity after the composition is stood at 70° C. for 10 minutes to the initial viscosity of 120% or less. According to the present invention, a composite laminated film having the good external appearance can be produced simply and effectively. |
93 |
Radiation curable powder coating compositions and their use |
US10321384 |
2002-12-18 |
US06825240B2 |
2004-11-30 |
Andreas Wenning; Giselher Franzmann; Emmanouil Spyrou |
A radiation curable powder coating composition, comprising I.) a binder comprising A) 60-90% by weight of at least one amorphous urethane acrylate; and B) 10-40% by weight of at least one crystalline urethane acrylate; wherein a Tg of a mixture of A) and B) is at least 35° C.; and II.) an auxiliary and an additive, excluding an UV initiator, crosslinks to yield a lightfast and weather-stable film. |
94 |
Process for the preparation of urethane (meth) acrylates |
US10367887 |
2003-02-19 |
US20040024118A1 |
2004-02-05 |
Thomas
Weihrauch; Andreas
Wenning |
The invention relates to a process for the solvent-free, continuous preparation of urethane (meth)acrylates in an extruder, intensive kneader, intensive mixer or static mixer. These urethane acrylates can be used for the preparation of radiation-curable transparent or pigmented coating compositions, in particular powder coating compositions. |
95 |
Extrudable highly crystalline thermoplastic polyurethanes |
US10036567 |
2001-12-21 |
US20030139509A1 |
2003-07-24 |
Kemal
Onder |
A thermoplastic polyurethane composition having a high crystalline content which advantageously can be processed in an extruder. The composition includes a crystallization retarding component of a short chain or monomeric diol which is branched, substituted or contains heteroatoms, or a combination thereof. The crystallization retarding component delays the onset of crystallization during extrusion processing until the composition has exited the extruder. |
96 |
Radiation curable powder coating compositions and their use |
US10321384 |
2002-12-18 |
US20030130372A1 |
2003-07-10 |
Andreas
Wenning; Giselher
Franzmann; Emmanouil
Spyrou |
A radiation curable powder coating composition, comprising I.) a binder comprising A) 60-90% by weight of at least one amorphous urethane acrylate; and B) 10-40% by weight of at least one crystalline urethane acrylate; wherein a Tg of a mixture of A) and B) is at least 35null C.; and II.) an auxiliary and an additive, excluding an UV initiator, crosslinks to yield a lightfast and weather-stable film. |
97 |
Crystallizing polyether polyols, a method for producing them and use of the same |
US10030489 |
2001-10-25 |
US06569981B1 |
2003-05-27 |
Walter Schäfer; Jörg Hofmann; Pramod Gupta; Pieter Ooms |
This invention relates to crystallizing polyether polyols which can be produced firstly by the reaction of propylene oxide and polyhydroxy compounds in the presence of an alkoxy compound which contains zinc and/or aluminium atoms to form a crystallizing polyether polyol with an average molecular weight Mn from 500 to 5000, followed by the further reaction of the crystallizing polyether polyol which is thus obtained with 10 to 90% by weight, with respect to the amount of crystallizing polyol, of an epoxide in the presence of a catalyst which does not polymerize propylene oxide stereospecifically, to form a crystallizing polyether polyol with an average molecular weight Mn from 1000 to 20,000. The invention further relates to a method for the production thereof and to the use thereof for the production of polyurethane materials, particularly polyurethane foams, polyurethane elastomers and polyurethane coatings. |
98 |
Moisture curing hot-melt adhesives |
US09918261 |
2001-07-30 |
US20030092831A1 |
2003-05-15 |
John
C.
Tangen |
The present invention is directed to a moisture curable, hot melt adhesive coating and/or sealant composition. The composition comprises (a) a first isocyanate-terminated prepolymer comprising the reaction product of an at least essentially semicrystalline hydroxy-functional material (Component A) and a polyisocyanate; (b) a second isocyanate-terminated prepolymer comprising the reaction product of an essentially semicrystalline poly(tetramethylene ether) glycol that has a molecular weight of at least about 1000 (Component B) and a polyisocyanate; and (c) a third isocyanate-terminated prepolymer comprising the reaction product of an essentially amorphous hydroxy-functional material (Component C) and a polyisocyanate, the essentially amorphous hydroxy-functional material having an average functionality less than 2.5 and a Tgnullnull20null C. All essentially amorphous hydroxy-functional materials in the composition have a Tgnullnull20null C. |
99 |
Solvent-free two-component curable adhesive composition |
US10082216 |
2002-02-26 |
US20020157789A1 |
2002-10-31 |
Akihiro
Imai; Kazuaki
Imamura; Taiji
Morimoto |
The solvent-free two-component adhesive composition of the present invention is prepared by a polyol component (A) and a polyisocyanate component (B), wherein the composition comprises at least one polyol component having crystallinity and selected from the group consisting of a polyester polyol, a polyether polyol, a polycarbonate polyol and a polyurethane polyol in an amount of 3 to 50% by weight relative to the total weight of the components (A) and (B). The adhesive composition has the initial viscosity of about 100 to 1,500 mPanulls (in particular, 100 to 1,000 mPanulls) at 70null C. immediately after the components (A) and (B) are mixed together, and the increasing ratio of viscosity after the composition is stood at 70null C. for 10 minutes to the initial viscosity of 120% or less. According to the present invention, a composite laminated film having the good external appearance can be produced simply and effectively. |
100 |
Polyurethanes with talc crystallization promoter |
US09419992 |
1999-10-18 |
US06458880B1 |
2002-10-01 |
Kemal Onder; George Hunter Loeber |
Talc is combined with polyurethane to facilitate crystallization of a polyurethane composition, particularly a polyester-based polyurethane composition. The addition of talc can allow for more rapid formation of products by, for example, injection molding, compression molding, extrusion, and film formation techniques. |