Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7388048 | Flexible semiaromatic polyamides with a low moisture uptake The present invention relates to a flexible semiaromatic polyamide composition with a low moisture uptake comprising, by weight, the total being 100: 60 to 99.5% (preferably 70 to 93%) of at least one copolyamide of formula X/Y,Ar ... | 06/17/2008 |
| 7105628 | Compositions for golf equipment Golf balls comprising thermoplastic, thermoset, castable, or millable elastomer compositions are presently disclosed. These elastomer compositions comprise reaction products of polyisocyanates and telechelic polymers having isocyanate-reactive end-groups such as hyd... | 09/12/2006 |
| 6881819 | Liquid initiator for carrying out anionic lactam polymerization in an accelerated manner, method for the production thereof and its use The invention relates to a liquid initiator for carrying out anionic lactam polymerization. The liquid initiator contains a conversion product of isocyanate (1) with a protic compound (P) and a base (B) in an aprotic solvation agent (S). ... | 04/19/2005 |
| 6875838 | Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer Disclosed is a process for reducing low molecular weight impurities, namely caprolactam and its oligomers, from Nylon-6 pre-polymer during the preparation of Nylon-6 polymer. ... | 04/05/2005 |
| 6809173 | Anionically produced polyamide and method for the production thereof and also a method for reprocessing polyamide The invention relates to a polyamide with low viscosity degradation after remelting which can be produced by anionic polymerization of lactam in the presence of alkaline catalysts and if necessary activators and the method for production of the polyamide. The invent... | 10/26/2004 |
| 6672031 | Environment protective liner plank structure Environment protective liner plank structure having several legs and a panel. Each leg is composed of multiple layers of rice grasses (or wheat stems) which evenly overlap each other in the same direction. A layer of adhesive is sprayed between each two l... | 01/06/2004 |
| 6649711 | Process for preparing vinylic polymers with catalyst system containing metal complex and Lewis acid A polymerisation process for the preparation of vinylic polymers from the corresponding vinylic monomers which process comprises the step of reacting a vinylic monomer in the presence of a catalyst system comprising a) a metal complex of general formula (... | 11/18/2003 |
| 6632897 | Use of nano-scaled metal oxide particles as polymerization catalysts Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond and/or at least one carbon containing ring capable of undergo... | 10/14/2003 |
| 6605687 | Compositions for making ene-thiol elastomers In one aspect, the invention provides ene-thiol elastomers comprising the reaction product of a polythiol free of hydrophilic groups and having at least two thiol groups and an aromatic, heterocyclic, aliphatic, or cycloaliphatic polyene having at least t... | 08/12/2003 |
| 6579965 | Process for the anionic polymerization of lactams For the anionic polymerization of lactams: (a) (i) a catalyst capable of creating a lactamate and (ii) a regulator chosen from amides of formula R1-NH--CO-R2, in which R1 can be substituted by an R3-CO--NH-- or R3-0-- radical and in which R1, R2 and R3 de... | 06/17/2003 |
| 6525166 | Polyamides with high fluidity, method for making same, compositions said polyamide The invention concerns a polyamide comprising macromolecular chains having a star-shaped configuration, a method for making said polyamide and compositions comprising same. More particularly, the invention concerns a method for making a polyamide comprisi... | 02/25/2003 |
| 6465583 | Continuous polymerization and direct fiber spinning and systems for accomplishing same Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one a... | 10/15/2002 |
| 6423304 | Dimerized fatty acid based polyamides useful for clear candle and gel applications Blooming and/or syneresis in gel formulations can be reduced or eliminated by adding to an organic mixture an effective amount of a polyamide gelling agent having a softening point of less than about 105° C. wherein the polyamide is the reaction product ... | 07/23/2002 |
| 6372939 | Production of 6-aminocaproic acid A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and 5-cyanovaleric acid; hydrogenating the resulting product to produce ... | 04/16/2002 |
| 6242509 | Gels including bioactive components An ester-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed into a fr... | 06/05/2001 |
| 6203872 | Waterproof and water vapour permeable lining Proposed is a process for sealing the seams of a water vapour permeable lining comprising a laminate of a textile material and a waterproof, but water vapour permeable film in which sections of said laminate with the textile sides facing one another are b... | 03/20/2001 |
| 6194537 | Nylon 6 chip and production of nylon 6 yarn and film and of further industrial articles from nylon 6 Nylon 6 chip is obtainable by hydrolytic polymerization of caprolactam in the presence of dicarboxylic acids as chain regulators, subsequent processing of the polymer melt into chip, extraction of the low molecular weight portions from the chip with water... | 02/27/2001 |
| 6169160 | Cable protectant compositions Substrates that are moisture-sensitive and/or corrosion-sensitive, such as electrical components found in fiber optic cables, copper wires, terminal blocks, connections and junctions, are protected from moisture and/or corrosion with a protectant composit... | 01/02/2001 |
| 6160080 | Polyamide, method for its manufacture and compounds containing it The invention relates to a polyamide, a method for its manufacture and compounds containing it. It involves, specifically, a polyamide obtained through polymerization of an aminoacid or lactam such as caprolactam in the presence of a compound having at le... | 12/12/2000 |
| 6143862 | Copolyamides and polyamide compositions, process of manufacture and applications Colpolyamides resulting from the polycondensation of a mixture of (a) dodecanelactam (L12) or of 12-aminododecanoic acid (A12) and of (b) 11-aminoundecanoic acid (A11) are characterized in that the monomer L12 or A12 represents 1 to 15% or 85 to 99% by we... | 11/07/2000 |
| 6111055 | Ester-terminated polyamide gels An ester-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed into a fr... | 08/29/2000 |
| 6069228 | Process for preparing polyamides Disclosed is a process for the preparation of polyamide polymers via prepolymer formation in a reactor system comprising a reactor, flasher and separator, crystallization of the prepolymer under controlled temperature conditions and the subsequent convers... | 05/30/2000 |
| 6034156 | Dispersion The presently claimed process for the production of a solid pigment/resin dispersion comprises the steps of mixing together a particulate pigment, a solid resin carrier, a water-immiscible organic solvent in which the carrier is at least partially soluble... | 03/07/2000 |
| 5998570 | Ester-terminated polyamides of polymerized fatty acids useful in formulating transparent gels in low polarity liquids A low molecular weight, ester-terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency. The ester-terminated polyamide is prepared by reacting "x" equivalents of dicarboxylic acid wherein at le... | 12/07/1999 |
| 5989697 | Copolyether amide and water vapor permeable film made therefrom Claimed is a copolyether amide having a melting point in the range of 180° to 260° C., incorporating at least 10 wt. % and not more than 30 wt. % of ethylene oxide groups, and composed of 30 to 60 wt. % of polyamide segments and 70 to 40 wt. % of segmen... | 11/23/1999 |
| 5859178 | Polymerization of caprolactam with certain quaternary ammonium compounds A process for the polymerization of caprolactam to nylon-6 polymer, comprising the use of a polymerization accelerator having the structural formula ##STR1## wherein R1, R2, R3 and R4 are alkyl, aryl and ar... | 01/12/1999 |
| 5783657 | Ester-terminated polyamides of polymerized fatty acids useful in formulating transparent gels in low polarity liquids A low molecular weight, ester-terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency. The ester-terminated polyamide is prepared by reacting "x" equivalents of dicarboxylic acid wherein at le... | 07/21/1998 |
| 5773557 | Acrylic/lactam resin compositions and method of producing same An acrylic/lactam monomer based polymeric resin is provided which has excellent weatherability, outstanding transparency and optical clarity, improved heath and solvent resistance, as well as improved impact strength. The acrylic/lactam monomer based poly... | 06/30/1998 |
| 5747634 | Continuous process for activated anionic lactam polymerization A continuous process for activated anionic lactam polymerization is proposed, wherein a liquid system is employed, which simultaneously contains activator and anionic catalyst for the polymerization of lactam.... | 05/05/1998 |
| 5744570 | Copolyether amide and water vapour permeable film made therefrom Claimed is a copolyether amide having a melting point in the range of 180° to 260° C., incorporating at least 10 wt. % and not more than 30 wt. % of ethylene oxide groups, and composed of 30 to 60 wt. % of polyamide segments and 70 to 40 wt. % of segmen... | 04/28/1998 |
| 5744573 | Electrostatic dissipative nylons A method for the anionic polymerization of a lactam which produces an nylon having a surface resistivity of between about 106 to about 1012 Ω/.quadrature.. Miscible antistatic agents are mixed with the lactam and the moisture concen... | 04/28/1998 |
| 5739262 | Ternary copolyamide This invention relates to a novel ternary polyamide for the production of monofilaments, films and injection moulded articles.... | 04/14/1998 |
| 5734006 | N-vinyl lactam copolymer containing tablets of low friability and high rate of dissolution This invention relates to a coprecipitated binder composition used for the compression of pharmaceutically and agriculturally active components to provide a non-friable pill or tablet of increased hardness with remarkably improved rate of dissolution and ... | 03/31/1998 |
| 5723567 | Copolyamides A partially aromatic copolyamide is formed of: (a) 5 to 30 weight-% of hexamethylene diamine (b) 10 to 40 weight-% of metaxylylene diamine (c) 15 to 50 weight-% of adipic acid (d) 5 to 45 weight-% of at least one aliphatic dicarboxylic add with 7 to 10 carbon atoms... | 03/03/1998 |
| 5696227 | Process for the batchwise preparation of polylaurolactam A process for the batch preparation of polylaurolactam in the melt, involving introducing molten, anhydrous laurolactam at a temperature of up to 280° C. into a pressure-resistant reactor heated externally to a maximum of 290° C.; introducing steam havi... | 12/09/1997 |
| 5674973 | Continuous production of low molecular weight polyamides A process for the continuous production of polyamides from a mixture of at least one lactam and water and, if required, other monomer units and/or conventional additives and fillers under polyamide-forming conditions, where the mixture of the starting mat... | 10/07/1997 |
| 5668234 | Reaction injection molding (RIM) of methyl (meth)acrylate and related monomers using group-4 catalysts Acrylate monomers such as methyl methacrylate, or other suitable monomers such as lactams, lactones, or acrylamides, are polymerized by reaction injection molding (RIM) utilizing a combination of organo group-4 catalysts, e.g., a neutral organo catalyst a... | 09/16/1997 |
| 5519097 | Process for the continuous hydrolytic polymerization of laurolactam The present invention provides an economical process for the continuous hydrolytic polymerization of laurolactam.... | 05/21/1996 |
| 5512627 | Acrylic/lactam resin composition and method of production same An acrylic/lactam monomer based polymeric resin is provided which has excellent weatherability, outstanding transparency and optical clarity, improved heath and solvent resistance, as well as improved impact strength. The acrylic/lactam monomer based poly... | 04/30/1996 |
| 5508339 | Acrylic/lactam resin compositions and method of producing same An acrylic/lactam monomer based polymeric resin is provided which has excellent weatherability, outstanding transparency and optical clarity, improved heath and solvent resistance, as well as improved impact strength. The acrylic/lactam monomer based poly... | 04/16/1996 |
