...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7348382 | Polyvinyl alcohol based block copolymer and pigment dispersion aqueous liquid using the same and recording liquid A recording liquid capable of giving a printed matter which is high in printing density, is suppressed in blur, has high printing quality, and has good fastness of a recorded matter including light fastness, water fastness and the like and having a low viscosity, go... | 03/25/2008 |
| 7339016 | Method for preparing water-absorbent polymer composite and accumulated material thereof Disclosed is a method for preparing a water-absorbent polymer composite comprising the steps of contacting a droplet containing a solvent and said polymerizable monomer before polymerization and/or under polymerization with first fibers fed through a first supply po... | 03/04/2008 |
| 7306700 | Process for the production of paper The present invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, comprising adding to the suspension drainage and retention aids comprising a cationic organic polymer and anionic micropartic... | 12/11/2007 |
| 7208555 | Process for preparing polyvinylidene fluoride copolymer The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is char... | 04/24/2007 |
| 6488764 | Cement composition with polymeric latexes prepared in the presence of amps seed A cement composition comprising a polymeric latex prepared by aqueous emulsion polymerization of a monomeric mixture comprising styrene and butadiene in the presence of a seed polymer prepared by aqueous emulsion polymerization of styrene and a salt of ... | 12/03/2002 |
| 6407162 | Emulsion polymerization process utilizing ethylenically unsaturated amine salts of sulfonic, phosphoric and carboxylic acids Disclosed is an improved method of making polymers. The method utilizes at least one ethylenically unsaturated monomer and at least one polymerizable surface active agent. The polymerizable surface active agent is capable of co-polymerization with traditi... | 06/18/2002 |
| 6297337 | Bioadhesive polymer compositions Improved crosslinked ionic polymers or salts thereof having a soluble polymer fraction of less than about 15 wt %, and methods for making the same. The polymers are useful as bioadhesives, thickeners, emulsifiers, suspending aids, and pharmaceutical contr... | 10/02/2001 |
| 6184287 | Polymeric latexes prepared in the presence of 2-acrylamido-2-methylpropanesulfonate A polymeric latex prepared by aqueous emulsion polymerization of a monomeric mixture comprising styrene and butadiene in the presence of a seed polymer prepared by aqueous emulsion polymerization of styrene and a salt of 2-acrylamido-2-methylpropanesulfon... | 02/06/2001 |
| 6153288 | Ink-receptive compositions and coated products Coatable ink-receptive compositions and coated substrates are provided. The compositions contain a pigment dispersed in a binder composed of an ethylene vinyl acetate emulsion polymer and at least one water soluble, cationic polymer, such as polydiallyldi... | 11/28/2000 |
| 5997952 | Fast-setting latex coating and formulations A method of preparing a fast-setting coating material on a substrate which comprises contacting a stable aqueous dispersion of a polymer that contains strong cationic groups and weak acid groups onto a substrate that is basic or treated to be basic.... | 12/07/1999 |
| 5621055 | Process for producing polymer particles with irregular shape A process for producing polymer particles with an irregular shape by polymerizing a water-soluble polymerizable monomer in a system comprising a hydrophobic organic solvent inert to the polymerization and an aqueous solution of the water-soluble polymeriz... | 04/15/1997 |
| 5401809 | Polymer ammonium borates and processes for their preparation Polymer ammonium borates having a molecular weight from about 5000 to about 500,000 and obtained by homopolymerization of monomers, such as, for example, diallyldialkylammonium chloride, and by copolymerization of mixtures of two monomers, such as, for ex... | 03/28/1995 |
| 5189111 | Aminoalkylated side-chains-containing vinylic copolymers Water-dilutable side-chain-containing vinylic copolymers comprising groups (γ) of the formula --X--Alk--Y-- (I), wherein Alk signifies alkylene with 2-6 carbon atoms or hydroxysubstituted alkylene with 3-6 carbon a... | 02/23/1993 |
| 4996274 | Polycarboxylic acids with higher thickening capacity and better clarity Polymer and process of polymerizing a monomer charge containing at least 85% of an olefinically unsaturated carboxyl monomer of 3 to 5 carbon atoms at up to 15% of a copolymerizable comonomer, in the presence of a mixed reaction medium containing an organ... | 02/26/1991 |
| 4707297 | Removable guidepath for automated guidance vehicles An aqueous guidepath coating composition includes a fluorescent dye, and an acrylic ionomer, and is particularly useful in positional control of and positional detection by stimulated emission-guided Automated Guidance Vehicles (AGV). This coating, used t... | 11/17/1987 |
| 4696981 | Method of manufacturing polyamino acid with microwaves Homopolyamino acids and copolyamino acids are prepared by polycondensation of one kind or a mixture of two or more kinds of monoammonium, diammonium, monoamide, diamide or monoamideammonium salts of malic acid and/or maleic acid and/or fumaric acid, one k... | 09/29/1987 |
| 4438245 | Polymers containing aromatic sulfonic acid ester or amide groups A composition for use in light-sensitive elements which comprises a functional group containing polymer having aromatic sulfonic acid ester or amido groups and sensitizer and a process for preparing the functional polymer and light-sensitive element emplo... | 03/20/1984 |
| 4415717 | Polymeric cationic substituted acrylamide surfactants A new composition of matter is revealed which comprises a copolymer of a surface active quaternary ammonium monomer salt and from 50 wt % to 97 wt % of acrylamide. The new copolymers can have molecular weights substantially greater than 10,000 and still r... | 11/15/1983 |
| 4396752 | Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate for flocculation of solid material suspensions and coalescence of emulsions Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate; and the use thereof for flocculation of solid material suspensions and coalescence of emulsions. Such polyelectrolytes contain in ... | 08/02/1983 |
| 4343730 | Water-in-oil emulsions of polymers of quaternary ammonium compounds of the acrylamido type Water-in-oil emulsions of homopolymers and copolymers of acrylamido alkylene quaternary ammonium salts and their use as sewage treatment acids, demulsifying agents, water clarification aids, etc.... | 08/10/1982 |
| 4319013 | Powdered cationic polyelectrolytes, based on acrylamide and quaternized or salified dimethyl-aminoethyl acrylate, process for producing them Cationic polyelectrolytes in water-soluble powder form, applicable to the flocculation of municipal sludge comprise copolymers of acrylamide and of quaternized or salified dimethylamino-ethyl acrylate, containing in molar proportions 10 to 50% of cationic... | 03/09/1982 |
| 4267103 | Solvent polymerization of carboxyl containing monomers Carboxyl or carboxyl salt containing polymers are prepared by polymerizing carboxyl containing monomers wherein greater than one percent of the carboxyl groups are neutralized with an alkali, ammonia or an amine, optionally copolymerized with other vinyli... | 05/12/1981 |
| 4266044 | Novel polymeric mordanting agents for anionic compounds Mordanting agents for anionic organic compounds are described which comprise recurring units of the formula: ##STR1## wherein R1 is hydrogen or methyl; A is methylene or methylene substituted by C1 -C5 alkyl; n is 0 o... | 05/05/1981 |
| 4237253 | Copolymers, their process of preparation, and cosmetic compounds containing them Copolymers having the formula ##STR1## where B represents Na, K, NH4, ##STR2## or 2-amino-2-methylpropanol-1, R1 and R2 represent hydrogen or -(X) OH; X represents an alkylene having 1-3 carbon atoms or alkylene ... | 12/02/1980 |
| 4230839 | Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylonitrile This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also rel... | 10/28/1980 |
| 4230810 | Method of preparing resin A method of preparing a resin by free radical emulsion polymerizing a monomer mixture comprised of (A) a water soluble bifunctional monomer, (B) a hard segment hydrophobic enhancing monomer, (C) optionally, a soft segment hydrophobic enhancing monomer, an... | 10/28/1980 |
| 4225689 | Aldehyde-containing vinylaryl ethers Disclosed herein are monomeric compounds having the formula (I): ##STR1## wherein: R, R1, R2 and R3 are independently hydrogen or alkyl having from 1 to 4 carbon atoms; R4 is arylene having 6 to 18 carbon atoms;... | 09/30/1980 |
| 4224150 | Process for clarifying aqueous systems employing quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylamide This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also rel... | 09/23/1980 |
| 4218554 | Process for preparing hydrogel contact lenses containing quaternary ammonium salts A novel hydrogel soft contact lens and a process for preparation thereof is disclosed which employs quaternary ammonium salts as a co-monomer which provide control over the percent of hydration with as high as 85% hydration obtainable in the resulting len... | 08/19/1980 |
| 4212782 | Polymers of acid addition salts of methacrylic acid and a 2-mono(lower)alkylaminoethyl methacrylate Disclosed are solid, readily water-soluble addition polymers of acid addition salts of methacrylic acid and a 2-mono(lower)alkylaminoethyl methacrylate, whose lower alkyl group has up to 6 carbons and is straight or branched chain or cyclic. These polymer... | 07/15/1980 |
| 4206051 | Process for demineralizing saline solutions A process for demineralizing an aqueous saline solution containing a deoxygenating agent by treating it with a thermally regenerable ion-exchange resin comprising a resinous material derived from a substituted diallylamine.... | 06/03/1980 |
| 4205152 | Thermosetting resin and its production A thermosetting resin which is a linear copolymer having a molecular weight of 10,000 to 1,000,000 and a glass transition point of -30° to +80° C., obtained by polymerizing in an aqueous medium a monomer mixture comprising (1) 0.1 to 50% by weight of at... | 05/27/1980 |
| 4198497 | N-Substituted acrylamidines, copolymers of N-substituted acrylamidines and esters of acrylic and methacrylic acid and uses of the copolymers N-substituted acrylamidines having the general formula: ##STR1## in which R1 is an isopropyl group, R2 and R3 each is hydrogen, ethyl, propyl, butyl, pentyl, octyl, or octadecyl. The acrylamidine is copolymerized with... | 04/15/1980 |
| 4179549 | Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylamide This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also rel... | 12/18/1979 |
| 4178221 | Process for the preparation of water-soluble acrylic polymers by photopolymerization Water-soluble acrylic polymers are prepared by a sequential photopolymerization process. A monomer solution is deposited on a support which is subsequently irradiated to effect polymerization. Photopolymerization promoters are incorporated in the monomer ... | 12/11/1979 |
| 4171418 | Cationic and amphoteric surfactants Novel water-soluble acrylamide copolymers contain 40 to 70 percent by weight acrylamide units, at least 30 percent of hydrophobic vinyl units and at least 10 percent of vinyl units having ionic properties. In aqueous solution these copolymers have the pro... | 10/16/1979 |
| 4170672 | Process for coating paper with a water soluble thermosetting resin A process is disclosed for coating paper with a novel water-soluble thermosetting resin, which has the property of providing paper with a nearly constant wet and dry strength over a wide pH range; the resin can be mixed, if desired, with other water-solub... | 10/09/1979 |
| 4167464 | Photopolymerized hydrophilic interpolymers of unsaturated carboxylic acid and esters Highly water absorbent films and fibers are prepared by photopolymerizing an alkaline metal salt of acrylic acid, at least one alkyl acrylate or methacrylate wherein the alkyl group contains 10 to 30 carbon atoms, at least one alkyl acrylate or methacryla... | 09/11/1979 |
| 4164612 | Process for producing water-soluble cationic polymers In a process for producing a water-soluble polymer in an easily grindable glassy state by subjecting to aqueous solution polymerization a mixture comprising a monomer composed mainly of a vinyl monomer represented by the general formula (I): ##STR1##... | 08/14/1979 |
| 4158726 | Process for preparing bead polymers Disclosed is a process for preparing a water-soluble bead polymer by dispersing drops of an aqueous solution of water-soluble vinyl monomer in a dispersing medium in the presence of a dispersion stabilizer, and polymerizing the monomer by using monomer se... | 06/19/1979 |