Abstract: This invention relates to novel polyamines which are the reaction product of A) at least one nonaromatic diamine containing from 2 to 40 carbon atoms, wherein the amine groups are primary amine groups; and B) at least one epihalohydrin of the formula  where R is hydrogen or methyl and X is chlorine or bromine; and the coatings resulting from the reaction between the above reaction product and nonaromatic epoxy resins.

Abstract: The invention relates to a process for producing a polymer or copolymer from monomer material comprising an acrylate, methacrylate, or mixture of such monomers, which comprises the steps of: (a) charging into a continuous tube reactor a feedstock comprising said monomer material and a polymerization initiator; (b) maintaining a flow rate of said material through the reactor at a reaction temperature in the reactor and under pressure sufficient to provide a residence time of the feedstock in the reactor during which polymerization will occur, to form a resin product in the reactor, and said resulting resin product comprising unreacted monomer, and (c) devolatilizing said resin product exiting the reactor to remove unreacted monomers, to provide a substantially monomer-free resin product. Further, the invention relates to resin product made by the process.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting an epoxy resin with a polyoxyalkylenemonoamine having a molecular weight of from about 3,000 to about 15,000 in a ratio of about 0.001 to 0.060 reactive equivalents of polyoxyalkylenemonoamine to about 1.0 reactive equivalents of epoxy resin. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting an epoxy resin with a polyoxyalkyleneamine having a molecular weight of from about 3,000 to about 15,000 in a ratio of about 0.001 to 0.060 reactive equivalents of polyoxyalkyleneamine to about 1.0 reactive equivalents of epoxy resin. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.

Abstract: The invention is an amidoamine epoxy curing agent composition, which comprises the reaction product of at least one aliphatic monobasic carboxylic acid, triethylenetetraamine, and an amine selected from the group consisting of polyethylenepolyamines higher than triethylenetetraamine, cycloaliphatic amines, and mixtures thereof, its method of use, and cured epoxy compositions made from it.

Abstract: A circuit for generating a pulse signal in response to an input signal. The circuit provides a pulse width for the pulse signal. A first logic device receives the input signal and generates a first intermediate signal. A delay device is coupled to the first logic device and receives the first intermediate signal. The delay device generates a second intermediate signal in response to the first intermediate signal after a period of time. The second intermediate signal has the same state as the second intermediate signal. A second logic device is coupled to both the first logic device and the delay device. The second logic device generates the pulse signal in response to the first intermediate signal.

Abstract: A circuit for generating a pulse signal in response to an input signal. The circuit provides a pulse width for the pulse signal. A first logic device receives the input signal and generates a first intermediate signal. A delay device is coupled to the first logic device and receives the first intermediate signal. The delay device generates a second intermediate signal in response to the first intermediate signal after a period of time. The second intermediate signal has the same state as the second intermediate signal. A second logic device is coupled to both the first logic device and the delay device. The second logic device generates the pulse signal in response to the first intermediate signal.

Abstract: The integrated circuit includes an input path circuit with an address path having an input buffer for providing address signals to a register. A separate clock path having an input buffer provides a clock signal for clocking the register. The input path circuit also includes one or more decode units each having a number of logic gate cells such as NAND gate cells or NOR gate cells. Circuitry is provided within the logic gates for reducing timing delay differences between propagation of multiple bit binary signals, such as address signals, through the logic gates. In an exemplary NAND gate described herein, reduction in timing delay differences is achieved by positioning an additional PMOS device along a current path between a power source and an output path otherwise including only a pair of parallel PMOS devices.

Abstract: An improved burst address generator that is coupled to a memory array receives as its inputs a N-bit start address and dynamically generates a burst sequence of 2.sup.N decoded addresses. The burst address generator is responsive to a mode-select signal that determines whether the burst address generator operates in a linear mode or a non-linear mode. A decoder is provided for decoding the start address. A wrap-around up-down 2.sup.N -bit shift register, coupled to the address decoder, receives the decoded start address from the address decoder and dynamically provides the proper burst address sequences in accordance to the selected mode. A start address storage element is also coupled to the shift register and the address decoder to keep track of the start address.

Abstract: A method and circuit for hiding a refresh of DRAM cells in a memory device. One embodiment of the circuit includes a selection circuit configured to select a first row of DRAM cells in the memory circuit in response to an active control signal. As a result, data may be read from or written to at least one of the DRAM cells in the first row. The selection circuit is also configured to couple a refresh address to a second row of DRAM cells in the memory circuit in response to an inactive state control signal. The second row of cells is refreshed when the selection circuit accesses the second row. For one embodiment, the DRAM cells are four transistor DRAM cells.

Abstract: It has been found that non-blushing coatings of high gloss, long pot life and fast cure time may be obtained by using an epoxy curing agent which comprises an epichlorohydrin-metaxylylenediamine reaction product selected from the group consisting of N,N'-bis(3-aminomethylbenzyl)-2-hydroxytrimethylenediamine, the higher oligomers of N,N'-bis(3-aminomethylbenzyl)-2-hydroxytrimethylenediamine and mixtures thereof and a melting point depressant such as a benzyl alcohol or water and an alcohol solvent and, optionally, a tertiary amine such as N,N'-bis(3-(dimethylamino)propyl)-urea.

Abstract: Provided are epoxy curing agents comprising the reaction product of reactants consisting essentially of a mono-alkylene polyamine having less than about 12 carbon atoms, an alicyclic diamine in an amount of greater than about 10% of the amine equivalents of said amine component, an aromatic mono-glycidyl ether having less than about 18 carbon atoms, and a diglycidyl ether of an aromatic diol having an average degree of oligomerization of less than about 3.5, wherein the ratio of primary amine equivalents of said alkylene polyamine to the total epoxide equivalents of said aromatic glycidyl ether and said diglycidyl ether of an aromatic diol is are greater than one, and the ratio of epoxide equivalents of said aromatic mono-glycidyl ether to epoxide equivalents of said diglycidyl ether of an aromatic diol is greater than one.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.025 reactive equivalents of an amine-epoxy adduct, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and between 0.3 and 0.9 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.

Abstract: A method of preparing a self-dispersing epoxy resin composition is provided. The method comprises reacting a polyepoxide with a polyoxyalkylene polyol wherein the equivalent ratio of epoxide groups of said polyepoxide to hydroxyl groups of said polyoxyalkylene polyol is greater than 10:1, to form an polyol-epoxy adduct and reacting said polyol-epoxy adduct with a polyepoxide and a polyhydric alcohol to form a self-dispersing epoxy resin. Also provided are aqueous dispersions of the self-dispersing epoxy resin and coating compositions comprising the same. The coating compositions are particularly useful as industrial maintenance coatings.

Abstract: A drug delivery device for delivering a drug either intermittently or to a pre-selected region of the gastro-intestinal tract, particularly to the colon, consists of an a solid core comprising an active agent coated with a delay jacket, then coated with a semi-permeable membrane which is optionally drilled to provide a release orifice, and then optionally further coated with an enteric material. The device delivers substantially all of the active agent to the targeted site.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.025 reactive equivalents of an amine-epoxy adduct, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and between 0.3 and 0.9 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.

Abstract: A memory device including a memory array and a series of sense amplifiers coupled to the memory array. The memory array includes numerous memory cells. A clock transmission line receives a clock signal and forms a clock word line within the memory device. A circuit is coupled to the clock transmission line and includes at least one transistor device coupled to the clock transmission line to receive the clock signal. The circuit also includes a clock output coupled to one of the sense amplifiers.

Abstract: There is disclosed a self-disbursing curable epoxy resin composition comprising the addition product of reactants comprising (a) 1.0 reactive equivalent of an epoxy resin, (b) from about 0.40 to 0.95 reactive equivalents of a polyhydric phenol, and (c) from about 0.005 to 0.5 reactive equivalents of an amine-epoxy adduct comprising the addition product of reactants comprising 1.0 reactive equivalent of an aromatic polyepoxide and from about 0.3 to 0.9 reactive equivalents of a polyoxyalkyleneamine.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, and optionally (c) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and greater than 1.0 but no more than about 2.5 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.

Abstract: A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, and optionally (c) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and greater than 1.0 but no more than about 2.5 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.