Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 6963015 | Ethylene-hexafluoropropylene copolymer elastomer The present invention provides an ethylene-hexafluoropropylene copolymer which is suitable as a hose or seal for engine oil of an automobile and has sufficient amine resistance, while maintaining heat resistance, oil resistance and chemical resistance close to that ... | 11/08/2005 |
| 6824709 | Fluorene derivatives and their polymers Provided are a fluorene derivative represented by Formula (1) and a polymer thereof: wherein at least one of A1, A2 and A3 is a group represented by Formula (2), and the others are 1,4-... | 11/30/2004 |
| 6682661 | Electrooptical liquid crystal system To improve switching times, especially at low temperatures, one or more reactive liquid crystalline compounds is added to a liquid crystal mixture used in an electroptical system. The electroptical system comprises a PDLC film comprising a liquid crystal ... | 01/27/2004 |
| 6670511 | Fluorine-containing diene, its production method and its polymer A fluorine-containing diene represented by the formula 1: wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not ... | 12/30/2003 |
| 6448452 | Fluorine-containing diene, its production method and its polymer A polymer which contains monomer units formed by polymerization of a fluorine-containing diene of formula 1: CF2.dbd.CF(CF2)n CXYOCF.dbd.CF2 Wherein X and Y are hydrogen and chlorine, hydrogen and-bromine, hydrogen a... | 09/10/2002 |
| 6388146 | Polymerizable compound, polymerizable resin composition, cured polymer and liquid crystal display device The polymerizable compound of this invention is represented by general formula (I): ##STR1## where R is H, R', R'O, R'COO, or R'OCO, R' is a linear or branched alkyl group or alkenyl group having 1 to about 15 carbon atoms, A1 and A2 | 05/14/2002 |
| 6365676 | Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF3 (CF2)h --I, where h is an integer from 4 to 18, with a compound having a terminal olefinic group, which comprises conducting s... | 04/02/2002 |
| 6350925 | Perhaloethyl aromatic compounds and perhaloethenyl aromatic compounds therefrom A synthesis is provided for ,ଲ-difluoro-ଲ-halo-ethenyl aromatic compounds such as ,ଲ,ଲ-trifluorostyrenes by a process of reacting CFX2 CFXI, wherein each X is independently F or Cl, provided that at least o... | 02/26/2002 |
| 6342572 | Flame retardant benzocyclobutene resin with reduced brittleness The invention pertains to benzocyclobutene resins having flame retardant properties. Such resins have a high glass transition temperature (Tg>250° C.), low moisture absorption, low dielectric constant, good mechanical properties, flame retardancy (meets ... | 01/29/2002 |
| 6222064 | Fluorination with aminosulfur trifluorides A fluorination method of oxygen and halogen sites with diaryl-, dialkoxyalkyl-, alkylalkoxyalkyl-, arylalkoxyalkyl- and cyclic aminosulfur trifluorides fluorinating reagents is disclosed.... | 04/24/2001 |
| 6166156 | Method for making photocurable halofluorinated acrylates Halofluorinated alkylene monomers are made by a method comprising the steps of: (a) subjecting a first polymer which is the reaction product of a fluorinated vinyl monomer and a vinyl comonomer to dehydrohalogenation to form a second polymer; (b) treating... | 12/26/2000 |
| 6080886 | Fluorination with aminosulfur trifluorides A fluorination method of oxygen and halogen sites with diaryl-, dialkoxyalkyl-, alkylalkoxyalkyl-, arylalkoxyalkyl- and cyclic aminosulfur trifluorides fluorinating reagents is disclosed.... | 06/27/2000 |
| 5886242 | Polymerizable, chiral compounds and their use The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparat... | 03/23/1999 |
| 5446214 | Cotelomers and a process for making them A cotelomer of --CH2 CF2 -- (VDF) units and CF2 CF(CF3)-- (HFP) units characterized in that the HEP units comprise at least 33% of all VDF and HFP units in the cotelomer combined. Also claimed is a process for p... | 08/29/1995 |
| 5350878 | Fluorinated compounds containing hetero atoms and polymers thereof This invention provides 1) novel reactive fluorinated compounds derived from a specified class of telomers or cotelomers of fluoroolefins; and 2) stable products and stable polymers thereof obtained by reaction or polycondensation of the novel reactive fl... | 09/27/1994 |
| 5240574 | Process for the photochemical production of halogen compounds The present invention provides a process for the photochemical production of compounds of the general formula: R--(C2 R4 ')n --X by telomerisation of an alkyl halide R--X as telogen and of an olefin C2 R4 ... | 08/31/1993 |
| 5169998 | Chemically inert fluorinated organosilicon compounds and fluorocarbon telomers for preparing same Chemically inert fluorinated organosilicon compounds for use as, e.g., lubricants are described corresponding to the formulae R14 Si or R23 Si(R3 SiR42)z R23, where z... | 12/08/1992 |
| 5145592 | Neutral hydrogen-free fluorocarbon cotelomers A class of neutral, hydrogen-free liquid or waxy perfluorinated cotelomers is described. The cotelomers contain more than 50% weight of fluorine and are derived from chlorotrifluoroethylene and a member selected from the group consisting of one perfluorin... | 09/08/1992 |
| 4833274 | Perfluoroalkanes and haloperfluoroalkanes, their percursors and process for their synthesis New perfluoroalkanes and haloperfluoroalkanes, having low melting point and high thermal and chemical stability, constituted by preferably branched perfluorinated and haloperfluorinated chains, obtained by starting from precursors containing two halogen a... | 05/23/1989 |
| 4808760 | Telomers prepared from chlorotrifluoroethylene and 1,2-dibromo-2-chlorotrifluoroethane Telomers are prepared by reacting chlorotrifluoroethylene with 1,2-dibromo-2-chlorotrifluoroethane (CBrClFCF2 Br) in the presence of a redox catalyst system comprising a metal halide selected from the group consisting of FeCl3, FeBr | 02/28/1989 |
| 4770797 | Carbon fluoride chloride lubricant The application of carbon fluoride chloride in dry lubricant compositions is disclosed. The material offers a substantial improvement in lubricating properties over prior art carbon fluoride dry lubricants. The improved lubricant is comprised of carbon fluorid... | 09/13/1988 |
| 4668710 | Trihalovinyl polyol ethers Included are trihalovinyl polyol ethers. The compositions have pendant 1,2,2-trihaloethenyl moieties. The compositions may be low viscosity oils or highly polymeric such as incorporated with a urethane or other polymers. One of the uses of the composition... | 05/26/1987 |
| 4307259 | Preparation of tetrabromotetrachloroperfluorododecanes A substantially pure mixture of tetrabromotetrachloroperfluorododecanes of the empirical formula C12 Br4 Cl4 F18, of which the isomer ##STR1## is a significant part, is prepared by oligomerizing bromotriflu... | 12/22/1981 |
