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 |
| 4012446 | Capped polymers Microbiocidal quaternary ammonium polymers which are made by condensing a difunctional tertiary amine with an excess of 1,4-dihalo-2-butene, then after removing the unreacted 1,4-dihalo-2-butene, adding to the reaction product a calculated quantity of mon... | 03/15/1977 |
| 4009228 | Primary amine-modified anhydride resin A resinous composition derived by reacting (A) an amine selected from primary amines and primary diamines with (B) a maleic anhydride-modified piperylene/methyl branched monoolefin backboned resin. Such compositions can be modified by co-reacting with an ... | 02/22/1977 |
| 4001193 | Anionic sizes Improved anionic sizes of alkali metal or ammonium salts of copolymers of 0.5- 50% by weight of an aliphatic or cycloaliphatic half ester of ,ଲ-monoolefinisch unsaturated dicarboxylic acids, 6-40% by weight of acrylic and/or methacrylic acid ... | 01/04/1977 |
| 3997705 | Method of coagulating a fluoro-elastomer from an aqueous dispersion thereof A process for coagulating a fluoro-elastomer in an aqueous medium which comprises adding to an aqueous acidic medium thereof an organic base or salt thereof which acts as a vulcanization accelerator.... | 12/14/1976 |
| 3988277 | Stabilized Mannich base solutions Aqueous solutions of Mannich bases of polyvinylamides are stabilized against viscosity increase and gelation by addition thereto of an effective amount of a formaldehyde scavenger.... | 10/26/1976 |
| 3985715 | Oxazolidone derivatives of chloromethylated polymers and methods of making the same The application discloses polymers and methods of making same in which a chlorine atom of a chloromethyl pendant group of a polymer such as a chloromethylated copolymer of styrene and divinylbenzene is substituted with a derivative of malonic acid having ... | 10/12/1976 |
| 3983097 | Method of producing high molecular derivatives High molecular derivatives (1) including at least a recurring structural formula: ##SPC1## (wherein R means an organic residue except for 2,4-dinitrophenyl radical in its backbone or side chain) are produced by subjecting a polymer (2) including at l... | 09/28/1976 |
| 3981987 | Hair setting compositions containing easily removable neutralized copolymers Copolymers obtained by copolymerization of vinyl esters of aliphatic carboxylic acids and/or acrylic or methacrylic acid esters of aliphatic alcohols, with half-esters of ethylenically unsaturated dibasic carboxylic acids, followed by neutralization with ... | 09/21/1976 |
| 3966694 | Cationic water soluble polymeric reaction product of poly(diallylamine)-epihalohydrin and nitrogen compound Disclosed are novel retention aid resins for paper fillers, said resins being derived by reaction of a nitrogen compound (such as ammonia) and a base resin which is the reaction product of an amino polymer and an epoxide difunctional toward amines. A spec... | 06/29/1976 |
| 3954912 | Graft polymers A process for the preparation of a graft copolymer which comprises reacting (I) a hydrocarbon resin based on cyclopentadiene or methylcyclopentadiene or both at an elevated temperature with (II) an olefinically unsaturated polycarboxylic acid compound and... | 05/04/1976 |
| 3954898 | Powder coating of epoxy resin, acrylic copolymer and tertiary amine Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##EQU1## wherein R1 is H or CH3 and R2 is an alkyl radical containing from 1 to 14 carbon atoms... | 05/04/1976 |
| 3951896 | Amido-containing resins and compositions containing the same An amido-containing resin which comprises an aminolysis reaction product of A. a reaction product of (a) a benzene compound and (b) an alicyclic compound, and B. an amino-containing compound, said aminolysis reaction product containing one amido group and one ... | 04/20/1976 |
| 3946035 | Anti-inflammatory polymers, pharmaceutical compositions containing the same and process for producing said polymers A polymer has on its macromolecular chains in the form of a lateral branching an anti-inflammator residue having a carboxylic acid function chemically linked to the macromolecular chains by an intermediate covalent function.... | 03/23/1976 |
| 3944511 | Chemically modified polymers There is disclosed a process for preparing chemically modified polyolefins or copolymers thereof which comprises reacting an olefin polymer with a co-reactant having a structure containing both a hydrocarbon residue and at least one highly polar functiona... | 03/16/1976 |
| 3944424 | PHOTOGRAPHIC OR IMAGE RECIEVING ELEMENTS CONTAINING POLYMERIC MORDANTS A water-insoluble polymer comprising repeating units at least 1/3 of said repeating units having the formula: ##SPC1## Wherein R1 and R2 are hydrogen or alkyl and R3, R4 and R5 are alkyl groups wherei... | 03/16/1976 |
| 3941808 | Product The present invention provides oil-soluble, polymeric surface-active agents which are polyimide-amine salts of styrene-maleic anhydride copolymers having pendant tertiary amine groups containing a salt-forming tertiary nitrogen atom neutralized to the ext... | 03/02/1976 |
| 3936513 | Gloss-stabilised fibres and films of acrylonitrile copolymers Vacuole-free films, filaments and fibers consisting of a polymer mixture which comprises a copolymer of acrylonitrile and a polymer which is obtained by a polymer-analogue reaction of a polyacrylic acid ester with dimethylamine, said polymer containing fr... | 02/03/1976 |
| 3933717 | Water soluble linear macroamine polymers and method of producing them A novel macroamine polymer particularly useful as a flocculating agent, said polymer having a structural unit shown by the following formula: ##EQU1## wherein R represents an alkyl group containing 1 to 4 carbon atoms, x is a mol decimal fraction bet... | 01/20/1976 |
