William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7435268 | N-alkylhydroxylated secondary para-phenylenediamine compounds, composition for dyeing keratin fibers comprising the same, and dyeing processes using the composition The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamines and a process for making these compounds. The present disclosure further relates to a composition for dyeing keratin fibers, including human keratin fibers such as hair, con... | 10/14/2008 |
| 7432399 | Diols formed by ring-opening of epoxies A polyol monomer comprising the formula: R1 and R3 are —H, aliphatic, aromatic, or ether; R2 is aliphatic, aromatic, ester, ether, or acrylic, and R1 contains a hydroxyl group, ... | 10/07/2008 |
| 7323597 | Method for the production of diaminoxylene by continuous hydrogenation of liquid phthalonitrile A process for preparing xylylenediamine by continuously hydrogenating liquid phthalonitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, in which a portion of the reactor effluent is recycled as a liquid circulation stream continuous... | 01/29/2008 |
| 6913798 | Sealing material for plastic liquid crystal display cells including two-component epoxy resin composition A sealant composition for a plastic liquid crystal display cell is composed of a two-component epoxy resin composition of a base resin liquid and a curing agent liquid, wherein the base resin is a liquid epoxy resin having from 1.7 to 6 in weight average of epoxy gr... | 07/05/2005 |
| 6908982 | Amino composition and process for producing the same An object of the present invention is to provide an amino composition which provides, when used as a curing agent for epoxy resin, a long pot life and an excellent appearance of a coating film to an epoxy resin composition without deteriorating the reactivity of the... | 06/21/2005 |
| 6646163 | Method for producing high purity xylylenediamine In a method for producing xylylenediamine by hydrogenating phthalonitrile separated from a gas produced by causing xylene to react with ammonia and oxygen-containing gas in the presence of a catalyst, (1) the gas is brought into contact with an organic so... | 11/11/2003 |
| 6562934 | Amino compound and process for producing the same An amino compound obtained by addition reaction of diamine represented by the following formula (1) and an alkenyl compound and a process for producing the same. H2 N--H2 C--A--CH2 --NH2 (1) wherein A is a phenylene... | 05/13/2003 |
| 6495496 | Hydroxy aromatic mannich base condensation products and the use thereof as soot dispersants in lubricating oil compositions Low molecular weight Mannich base condensates of hydroxy aromatic compounds, an aldehyde; and an amine, wherein the combined number of substituent carbon atoms does not exceed 80. Such compounds are useful as soot dispersants in lubricating oils when used... | 12/17/2002 |
| 6476269 | Method for producing xylylenediamine A method for producing xylylenediamine by hydrogenating phthalonitrile synthesized through ammoxidation of xylene, wherein phthalonitrile is trapped in an organic solvent (A) by bringing a gas produced through ammoxidation into direct contact with the org... | 11/05/2002 |
| 6090170 | Multihydroxypolyalkenyl-substituted amine compounds and fuel composition comprising the same The present invention relates to derivatives of polyalkenyl amine substituted with numerous hydroxy groups of the following formula (I) useful as a novel fuel detergent. ##STR1## wherein polyalkenyl denotes a branched alkyl derived from polyolefin wh... | 07/18/2000 |
| 5847215 | Racemization of optically active amines A process for the racemization of optically active amines of the formula (I), where Ar is an unsubstituted or substituted aryl and R is alkyl, in which a) (I) is reacted with the ketone (II) in which Ar and R have the same meanings as for (I), to give the... | 12/08/1998 |
| 5578685 | Curing component for epoxy resins comprising Mannich base from alkylated polyhydroxy aromatic Curing components containing amino groups for curing epoxy resins are obtained by the reaction of alkylated polyhydroxy aromatics (A) with polyamines (B) and aldehydes (C) by the mechanism of the Mannich reaction. The preparation of curable mixtures and v... | 11/26/1996 |
| 5576108 | Curing component for epoxy resins Curing components containing amino groups for curing epoxy resins are obtained by the reaction of alkylated polyhydroxy aromatics (A) with polyamines (B) and aldehydes (C) by the mechanism of the Mannich reaction. The preparation of curable mixtures and v... | 11/19/1996 |
| 5428065 | 1,3-benzenedimethanamines useful as central nervous system active agents Pharmaceutical compounds of the formula: ##STR1## R1 to R8 are each hydrogen or C1-4 alkyl, m, n and p are each 0, 1, or 2, q is 0, 1, 2 or 3, X and Z are each C1-4 alkyl, C1-4 alkoxy, hydroxy, n... | 06/27/1995 |
| 5380721 | Aryl-fused and hetaryl-fused-2,4-diazepine and 2,4-diazocine antiarrhythmic agents Aryl-fused- and hetaryl-fused-2,4-diazepines of formula XXXVI, benzodiazocines of formula XXX, benzodiazepines of formula II ##STR1## δ-aminoamides of formula III and aryldimethanamines of formula XXXVII ##STR2## wherein A is an aryl or he... | 01/10/1995 |
| 5274106 | Amino-substituted aryllithium compounds as anionic polymerization initiators A vulcanizable elastomeric compound and products such as pneumatic tires and the like, are formed from a functionalized polymer having a functional group derived from an anionic polymerization initiator. The anionic polymerization initiator comprises the ... | 12/28/1993 |
| 5234946 | Substituted alkylamine derivatives The substituted alkylamine derivatives represented by formula (I) ##STR1## wherein R1 represents (a) substituted or unsubstituted C2-6 alkenyl group, (b) substituted or unsubstituted C3-6 cycloalkenyl group, (c) subst... | 08/10/1993 |
| 5130454 | Polytetrahydrofuran derivatives having terminal aromatic groups Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R1 and R4 are each hydrogen or various radicals.... | 07/14/1992 |
| 4973746 | Process for converting pet scrap to diamine monomers Scrap poly(ethyleneterephthalate) is converted to useful amine and diamine monomers such as para-xylylenediamine, 1,4-bis(aminomethyl)cyclohexane and 4-aminomethyl benzoic acid for the production of various polyamides. The conversion of poly(ethyleneterep... | 11/27/1990 |
| 4888283 | Selective inhibitors of benzylaminoxidases with respect to other aminoxidases Selective inhibitors of benzylaminoxidases, said inhibitors consisting of compounds of the general formula I ##STR1## wherein X is a group C--R4 or a nitrogen atom, R1 and R2, which can be the same or different from e... | 12/19/1989 |
| 4879414 | Polythiols and use as epoxy resin curing agents Polythiols prepared by the reaction of hydrogen sulfide or organic dithiols with polyglycidyl substituted amines have been found to be outstanding curing agents for epoxy resins. Epoxy resins cured with these polythiols are characterized by not only impro... | 11/07/1989 |
| 4792355 | Corrosion inhibiting aqueous, acidic compositions comprising metal-chelating omicron-hydroxybenzylamine compound This invention relates to an aqueous, acidic composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a metal substrate and a method for doing same. The composition has a pH of between about 2 and about 6 and comprises water-... | 12/20/1988 |
| 4790878 | Corrosion inhibiting aqueous compositions comprising metal-chelating diphenolamine compounds This invention relates to an aqueous composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a corrodible metal substrate and a method for doing same. The composition has a pH of between about 2 and about 10 and comprises wa... | 12/13/1988 |
| 4550206 | Method of preparing tetrahalobenzene compounds, chemical intermediates used therein and certain of the compounds themselves Tetrahalobenzene compounds of the formula (I): ##STR1## in which X is independently chloro or, preferably, fluoro and Y is hydrogen or --N+ R3 A- in which each R is independently C1-4 alkyl and A is a radic... | 10/29/1985 |
| 4514573 | Isoprenylamine derivatives This invention relates to new isoprenylamine derivatives and acid addition salts thereof, which are useful for controlling virus infection of vertebrate animals.... | 04/30/1985 |
| 4499264 | Preparation of amino polyols An improved method is disclosed for producing amino polyols useful in preparing polyurethane foams. The improvement concerns charging ammonia, a primary amine or a secondary amine to the reaction vessel at the end of the oxide digestion step. The amine or... | 02/12/1985 |
| 4414220 | Organic diamine therapeutic compositions A series of organic diamine base compounds derived from either an aromatic, alicyclic or heterocyclic ring and possessing, for the most part, an intervening methylene group between the ring and the aforesaid basic moiety have been prepared, including thei... | 11/08/1983 |
| 4383102 | Method for producing a low viscosity spray polyol by reacting an alkylene oxide with the reaction product of a phenol, an amine and a smaller formaldehyde portion An improved method for the production of polyols useful in the application of sprayed high density polyurethane foams is described. The improvement involves varying the formaldehyde to phenol mole ratio to range between 1.25:1 to 1.75:1 to produce a polyo... | 05/10/1983 |
| 4220650 | Organic diamine therapeutic compositions and methods A series of organic diamine base compounds derived from either an aromatic, alicyclic or heterocyclic ring and possessing, for the most part, an intervening methylene group between the ring and the aforesaid basic moiety have been prepared, including thei... | 09/02/1980 |
| 4166132 | Antiviral amine derivatives of glycerol and propanediols Novel amine and amidine derivatives of di-0-(n-higher alkyl and alkenyl)-glycerols and -propanediols, and their pharmaceutically acceptable acid addition salts, are useful for combating viral infections in mammals. Of particular interest is 1,3-di-0-... | 08/28/1979 |
| 4153598 | Monoazo and diazo colorants from aminoalkylanilines and bis(aminoalkyl)anilines Water-insoluble azo dyestuffs of the formula ##STR1## AND WATER-SOLUBLE ACID ADDITION SALTS THEREOF USEFUL FOR COLORING NATURAL FIBERS, SYNTHETIC FIBER-FORMING MATERIAL AND CELLULOSIC MATERIALS AS WELL AS IN THE MANUFACTURE OF PAPER, VARNISHES, INKS,... | 05/08/1979 |
| 4137265 | Water-insoluble nitrogen-containing polyols A group of water-insoluble nitrogen-containing polyols is provided which are capable of self-catalyzed reaction with organic polyisocyanates to form rigid polyurethane foams of excellent dimensional strength. The polyols of this group are prepared by reac... | 01/30/1979 |
| 4119668 | N,N'-Bridged-bis[N,N'substituted-2-hydroxy alkaneammonium] salts N,N'-Bridged-bis[(O and/or N-substituted)-2-alkyl-2-hydroxyethylamines] of the formula ##STR1## are prepared by condensing an epoxide of the formula ##STR2## and a diamine of the formula R'NH-X-NHR'. The products and dicarbanilates, acid-ad... | 10/10/1978 |
| 4089902 | Diallylaminomethyl-resorcinols Diallylaminomethyl-resorcinol compositions are described which are useful for adhering fiber to rubber.... | 05/16/1978 |
| 4070400 | Diphenyl polyamides having a cyclohexylene moiety Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical s... | 01/24/1978 |
| 4062955 | Analgesic basic naphthalene derivatives Compounds of the general formula: ##STR1## wherein the groups CHR1 NR2 R3 and CHR4 NR5 R6 may be the same or different and where the group CHR4 NR5 R6 ... | 12/13/1977 |
| 4058563 | Novel schiff bases A process is described for isomerizing the cis,cis- and cis,trans-isomers of di-(p-aminocyclohexyl)methane to the corresponding trans,trans-isomer. The starting isomer, or mixture of isomers, is converted to the corresponding bis-benzaldimine by reaction ... | 11/15/1977 |
| 4034040 | Xylene-diamines as antiviral agents Compounds of the formula ##STR1## or a non-toxic acid addition salt thereof wherein R1 is alkyl of from 1 to 20 carbon atoms; R2 is alkyl of from 12 to 20 carbon atoms; R3 is selected from the group consisting of hydrogen ... | 07/05/1977 |
| 4032700 | Process for the preparation of aminated polymers useful as additives for fuels and lubricants Preparation of aminated polymeric additives useful as oil additives, for example as dispersants for hydrocarbon fuels and lubricants, and as multifunctional dispersant-viscosity index improvers for lubricants, by the reaction of amine with a halogen conta... | 06/28/1977 |
| 4029708 | Linear surfactant polymers formed from substituted amines and difunctional reactants Linear surfactant polymers, useful in waterflooding processes and as emulsion breakers, can be prepared by reacting various amines, such as hexamethylene diamine, with monofunctional pendant groups, such as propylene oxide, and then further reacting the s... | 06/14/1977 |