Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4107256 | Suspension polymerization of polyurethanes and spin-molding the powder product thereof Polyurethanes having a fine particle size are prepared according to a suspension process wherein silicone surfactants are utilized and the polymerization is carried out under agitation in a nonaqueous and a nonsolvent system according to either a two step... | 08/15/1978 |
| 4096129 | Glutarate-containing polyesterpolyols, methods of preparation and polyurethane compositions derived therefrom Glutarate-containing polyesterpolyols are produced by reaction of primary and/or secondary diols and/or polyols with dimethyl glutarate in the presence of a transesterification catalyst which does not have deleterious effects on the behavior of such polye... | 06/20/1978 |
| 4089822 | Novel polyurethane curative A polyurethane elastomer exhibiting a low glass transition temperature is provided, which comprises the reaction product of (a) a polyurethane prepolymer having terminally reactive isocyanate groups, prepared by reaction of a polymeric diol with a stoichi... | 05/16/1978 |
| 4088636 | 2,2'-Dithiodianiline cured polyurethane An improved polyurethane obtained by reacting 3,3'-dimethyldiphenyl methane-4,4'-diisocyanate with a polyether polyol and curing with 2,2'-dithiodianiline in the presence of a catalytic amount of triethylene diamine.... | 05/09/1978 |
| 4070344 | Amine terminated polymers and the formation of block copolymers Polymers of anionically polymerized monomers such as conjugated dienes, vinyl substituted aromatics, olefinic type compounds, and heterocyclic nitrogen containing compounds, are produced and end capped with a polyisocyanate or polyisothiocyanate. Such end... | 01/24/1978 |
| 4070346 | Production of polyurethane powder The instant invention is directed to the production of polyurethane or polyurea powder. The process broadly comprises atomizing an isocyanate, polyisocyanate or isocyanate pre-polymer in the liquid state and bringing the atomized particles into contact wi... | 01/24/1978 |
| 4069212 | Flame retardant spandex type polyurethanes Flame retardant elastomeric compositions comprised of either spandex type polyurethane having incorporated into the polymer chain halogen containing polyols, conventional spandex type polyurethanes in physical admixture with flame retardant additives or f... | 01/17/1978 |
| 4067844 | Urethane polymers and sealant compositions containing the same Novel, curable polyurethane polymers in which a proportion of the NCO terminations are reacted with certain amino silanes, or with the residual on reaction of a mercaptosilane with a monoepoxide, or with the residual on reaction of an epoxysilane with a s... | 01/10/1978 |
| 4066592 | Zwitterion-containing compositions Synthetic resins which are water-dispersible Zwitterion-containing resins and containing chemically-bound quaternary ammonium base groups can be dissolved or dispersed in water to provide aqueous coating compositions. Such compositions in which these resi... | 01/03/1978 |
| 4054556 | Polyurethanes cured with derivatives of 2,4-diamino-benzoic acid Polyurethane/polyurea compositions comprising the reaction product of an organic diisocyanate, a glycol having a molecular weight of 500-5000 and a derivative of 2,4-diaminobenzoic acid selected from C1 -C8 alkyl and substituted alky... | 10/18/1977 |
| 4053446 | Process for preparing high tear-strength polydiene polyurethane Polydiene polyurethanes having high tear strength are obtained by using polydiene glycols, prepared with use of lithium-based catalyst, having a number average molecular weight of 1,000 to 5,000 and functionality of 1.8 - 2.1, diisocyanates and chain-exte... | 10/11/1977 |
| 4045396 | Flame retardant permanent press Fire retardancy and wrinkle resistance are imparted to cellulosic textiles by impregnation of said textiles with the phosphoalkylated reaction product of a polyisocyanate and an alkyleneamine.... | 08/30/1977 |
| 4036906 | Cured polyurethane compositions containing epoxy resins Cured polyurethane composition characterized by resistance to hydrolysis degradation prepared by reacting a polyurethane reaction mixture containing sufficient diamine curative in the presence of an excess of an epoxy resin.... | 07/19/1977 |
| 4032516 | Method of making polyurethane powder Method for preparing polyurethane resin directly in finely divided form in which method a first reactant for forming the polyurethane is emulsified as fine droplets with the aid of special surfactants and controls in an inert organic liquid medium in whic... | 06/28/1977 |
| 4028301 | Solid, rapid-setting, rigid polyurethanes Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid mo... | 06/07/1977 |
| 4028306 | Urea or carbonamide containing diisocyanate polyaddition products with phosphoric ester substituents The present invention relates to linear, film-forming diisocyanate polyaddition products soluble in lacquer solvents which contain 10 to 69 wt. % of structural units of the formula: ##STR1## and processes for producing such diisocyanate polyaddition ... | 06/07/1977 |
| 4028310 | Process for the production of polyureas This invention relates to a process for the production of polyureas by reacting organic polyisocyanates with diamines, optionally in the presence of other polyfunctional compounds, i.e. polyfunctional in the isocyanate polyaddition context, having isocyan... | 06/07/1977 |
| 4021414 | Sulfuric acid-resistant polyurethane composition and method of preparation A polyurethane composition, resistant to sulfuric acid, prepared by reacting 2,2'-diaminodisulfide with an isocyanate-terminated prepolymer, itself prepared by reacting, in the presence of a 2,6-dialkylated para cresol, at least one polymeric polyol with ... | 05/03/1977 |
| 4018849 | Polyurethane polyol compositions modified with an alkylenimine Compositions useful as coating compositions comprise the reaction product of a polyurethane polyol which contains acidic carboxyl groups with an alkylenimine. Particularly desirable coatings are produced by further combining the imine-modified polyurethan... | 04/19/1977 |
| 4018745 | Polyurethane wear-resistant surfacing A tough wear-resistant elastomer finish coating for flooring and the like is provided comprising a moisture cured reaction product of an aliphatic polyisocyanate capped prepolymer and an unhindered polymeric polyprimary polyamine.... | 04/19/1977 |
| 4016143 | Polyurethanes based on aromatic polyamines Aromatic di- and triamines are disclosed which amines are prepared by reacting isatoic acid anhydride with a compound containing at least two hydroxyl groups and at least one tertiary nitrogen group and having a molecular weight of from about 119 to about... | 04/05/1977 |
| 4008196 | Process for preparation of amphoteric resinous aqueous emulsions A process for the preparation of amphoteric resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethan... | 02/15/1977 |
| 3998794 | Polyurethane polyureas which contain uretdione groups Cross-linkable diisocyanate polyaddition products containing uretdione groups statistically distributed in the products prepared by reacting: 1. uretdione group-containing polyisocyanates having aliphatically bound isocyanate and uretdione groups, which polyis... | 12/21/1976 |
| 3993619 | Process for dyeing polyurethane resins Dyestuffs of the formula ##SPC1## Wherein: R1 denotes cyano, halogen, alkoxy, alkylsulphonyl, arylsulphonyl, optionally mono or disubstituted carbamoyl or optionally mono- or disubstituted sulphamoyl, R2 denotes hydrogen, cyano carbo... | 11/23/1976 |
| 3991026 | Process for the preparation of anionic thermosetting resin emulsions A process for the preparation of anionic thermosetting resin emulsions, comprising the steps of (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) then reacting t... | 11/09/1976 |
| 3989568 | Polyurethane covered golf balls An improved process and resultant composition for covering golf balls with polyurethane is disclosed. Either the prepolymers or the curing agents are selected to have different rates of reaction so that a partial cure can be made to form a ball half shell... | 11/02/1976 |
| 3982986 | Laminates and method of making them Saran films, or saran coated films or substrates are laminated to treated polyethylene films or surfaces, or to other saran surfaces by means of thermoplastic polyether polyurethanes applied to the substrates as aqueous solutions by conventional laminatin... | 09/28/1976 |
| 3979363 | Method of producing polyurethane filaments Polyurethane elastomeric filaments of improved physical properties and chemical resistance prepared by preforming the filamentary material such that the polyurethane contains at least about 100 up to about 700 milliequivalents/kilogram of reactive termina... | 09/07/1976 |
| 3970601 | Colored poly (urethane) urea powders The instant invention relates to thermoplastic polyurea powders, optionally containing urethane groups, characterized by A. a smooth, substantially spherical or lenticular surface, B. an average particle diameter of 5 to 1,000μ, preferably 10 to 200μ, C. a u... | 07/20/1976 |
| 3966664 | Solid, rapid-setting, rigid polyurethanes Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid mo... | 06/29/1976 |
| 3963681 | Urethane elastomers prepared from polyethers having a certain molecular weight distribution Polyether urethane elastomer composition having improved mechanical properties has been prepared by using polyfunctional isocyanate, curing agent and polyether having active hydrogen terminal groups, wherein the weight average molecular weight of said pol... | 06/15/1976 |
| 3959227 | Polyformals having low methylol end-group content and polyurethanes produced therefrom An improved polyformal is provided which has the formula: wherein R is the hydrocarbon portion of an ,ω-glycol, containing at least 4 carbon atoms in a single chain or a 4 carbon atom chain interrupted by a heteroatom which is oxygen or sulfur; wherein... | 05/25/1976 |
| 3940542 | Polyurethane hydrogel fibers and tapes and composites with natural and other synthetic fibers or films Method for the production of water swellable, lightly crosslinked, hydrogel polymer tapes or fibers comprises extruding an isocyanato terminated prepolymer of a poly(alkyleneoxy) polyol and an organic diisocyanate into a coagulant or crosslinking bath con... | 02/24/1976 |
| 3939123 | Lightly cross-linked polyurethane hydrogels based on poly(alkylene ether) polyols Polyurethane hydrogels of high water swellability comprising lightly crosslinked polymers of isocyanate terminated prepolymers which are the reaction production of (i) poly(alkyleneoxy) polyols with (ii) organic diisocyanates that has been lightly crossli... | 02/17/1976 |
| 3939105 | Microporous polyurethane hydrogels, method and composites with natural and other synthetic fibers or films Microporous polyurethane hydrogels of high water swellability comprising lightly crosslinked polymers of isocyanate terminated prepolymers which are the reaction product of (i) poly(alkyleneoxy) polyol with (ii) organic diisocyanate that has been lightly ... | 02/17/1976 |
| 3933759 | Heat-activatable, storage-stable polyurethane powders A heat-activatable polyurethane powder is prepared which contains about stoichiometric amounts of both blocked --NCO groups and active hydrogen-containing groups, the distribution of which is determined by the order in which the reactants are brought toge... | 01/20/1976 |
| 3931115 | Process of spraying polyurethane-polyurea compositions and applications thereof A polyurethane-polyurea composition is obtained by reacting a liquid prepolymer previously prepared by reaction of one or more polyols having a molecular weight of between 300 and 6000 with a polyisocyanate in excess with a diamine dissolved in a solvent,... | 01/06/1976 |
