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4356275 |
Aminoplast foams
Aminoplast foams of hardened reaction products of aldehydes and at least bifunctional modified α,ω-ureas which contain at least one ether, thioether, acetal, ester, ester amide and/or carbonate...
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4356297 |
In-situ formation of a diprimary amine curing agent
Reactions involving diprimary amines, e.g., methylenedianiline, particularly those forming polyesterimides are carried out using, in place of the diamine, a urethane compound capable of yielding...
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4350803 |
Reaction arrestment mixer head and mixing process
A mixer mixes at least two fluid components of the type which when mixed together undergo chemical reaction to form a solid or semi-solid reaction product. The components are separately introduced...
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4346205 |
Energy absorbing elastomers and composites
A novel elastomer having a very low compression set and a very slow recovery from compression comprises a flexible polyurethane of essentially linear structure containing unsatisfied hydroxyl...
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4343339 |
Process for the production of tires comprising vulcanized elastomers containing urethane groups
The instant invention is directed to a process for the production of vulcanized elastomers containing urethane groups by casting, comprising: (A) mixing the following components: (1) liquid...
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4341687 |
Peelable film-forming urethane/isocyanate paints
A peelable film-forming paint is disclosed which is used for removing contamination from and protecting the surface of equipment subject to contamination such as oil, and which contains...
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4338256 |
Triisocyanates
The present invention provides novel triisocyanate compounds of the formula: ##STR1## the production thereof and the use thereof for polyurethane resins, especially, for solvent-free or high solids...
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4337333 |
Substituted polyisocyanate or polyisocyanate mixtures of the diphenyl methane series containing chlorosulfonyl groups
The instant invention is directed to a substituted polyisocyanate or polyisocyanate mixtures of the diphenyl methane series containing chlorosulfonyl groups, a process for the preparation thereof...
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4336353 |
Salts of 3-methyl-2-(2',4'-dimethyl-phenylimino)-4-thiazoline with polymers containing sulfonic acid groups
Salts of 3-methyl-2-(2',4'-dimethyl-phenylimino)-4-thiazoline with polymers containing sulfonic acid groups, processes for producing them, and their use in combating pests.
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4336365 |
Process for the continuous preparation of polyisocyanates containing uretdione groups and their use as starting components for the production of polyurethane resins
The instant invention is directed to a process for the continuous preparation of polyisocyanates containing uretdione groups comprising dimerizing aromatic polyisocyanates which are free from...
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4330656 |
Activated isocyanate prepolymers and a process for the production of elastomeric polyurethane resins
This invention relates to isocyanate prepolymers activated with alkyl ureas and to a two-stage process for the production of polyurethane elastomers based on 1,5-naphthylene diisocyanate, using...
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4329437 |
Process for the production of broken down lignin-cellulose silicate copolymers
Small particles of cellulose-containing plants and an oxidated silicon compound are mixed with an alkali metal hydroxide then heated to 150° to 220° C. while agitating thereby producing an alkali...
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4328136 |
Process for the production of cellulose-silicate products
A process for impregnating and reacting cellulose particles with oxidated silicon acid to produce lignin-cellulose-silicate and/or cellulose-silicate products impregnated with hydrated silica.
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4328149 |
Polymerization method utilizing a three-phase emulsion system
Polymerization method utilizing a three-phase system: water-in-oil-in-water or oil-in-water-in-oil comprising the steps (a) adding the monomer material to be polymerized into the innermost water or...
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4327008 |
Urethane rheology modifiers and coating compositions containing same
Rheology modifiers useful in water-based and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate, water and a...
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4322364 |
Modified isocyanate compositions
A process for the production of a modified isocyanate by reacting a composition containing carbodiimide groups and free isocyanate groups with a diester of an aliphatic dicarboxylic acid in the...
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4321172 |
Organic polymers with acylurea repeating units having tertiary amino groups pendant therefrom and cathodic electrocoating of said polymers
Polymers with acylurea repeating units in their backbones and having tertiary amino groups pendant therefrom are disclosed, as are compositions useful for cathodic electrocoating and methods for...
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4320171 |
Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating
Magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment dispersed in a binder which contains at...
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4317752 |
Process for the production of polyisocyanate lignin-cellulose plastics
This invention relates to a process for preparing polyisocyanate lignin-cellulose plastics by reaction of a lignin-cellulose polymer with a compound having at least two isocyanate groups to produce...
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4313857 |
Broken-down organic lignin-cellulose silicate polymers
Small particles of cellulose-containing plants are mixed with an alkali metal hydroxide and an oxidated silicon compound, then heated to 150° C. to 220° C. while agitating, thereby producing a...
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4314048 |
Aliphatic triisocyanate, a method for preparing it and the preparation of polyurethane resins therewith
4-Isocyanate methyl-1,8-octamethylene diisocyanate of the formula (I), ##STR1## and a method of preparing 4-isocyanate methyl-1,8-octamethylene diisocyanate of the formula (I) which comprises...
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4311815 |
Process for the production of moldings based on polyurethanes
The instant invention is directed to a process for the production of moldings based on polyurethanes comprising reacting organic polyhydroxyl compounds with organic polyisocyanates in quantitative...
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4307203 |
Process for the production of polyurethane silicate foams and resinous products utilizing aldehyde-broken down alkali metal cellulose silicate polymer
Organic polyisocyanates are reacted chemically with aldehyde-broken down alkali metal cellulose silicate polymers to produce polyurethane products.
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4304877 |
Process for the production of alkali metal lignin-cellulose silicate polymer and reaction products
Small particles of lignin-cellulose-containing plants are mixed with an alkali metal silicate, then heated at 80° C. to 120° C. while agitating, thereby producing an alkali metal lignin-cellulose...
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4303768 |
Process for the Production of alkall metal silicate-organic plastics
Polymerable organic compounds are emulsified with aqueous alkali metal silicate solutions then polymerized with a catalyst such as a peroxide type catalyst thereby producing an alkali metal...
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4303786 |
Isonitrile derivatives of macromolecules containing hydroxyl groups
The present invention relates to novel isocyano derivatives of linear or cross-linked, natural or synthetic macromolecules, the derivatives being of the general formula P--O--Q--NC, wherein P is...
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T101303 |
Process for casting polyurethane articles
A mixture of isocyanate-terminated polyurethane prepolymer made from an aliphatic diisocyanate and an approximately stoichiometric amount of a curing aromatic diamine is stored at least -5° to...
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4301262 |
Process for the production of aminoplast dispersions
The instant invention is directed to a process for the production of dispersions of aminoplast condensates in organic polyhydroxyl compounds by the oligo-condensation or polycondensation of...
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4301257 |
Polyfunctional isocyanates free of alkali and urea groups
This invention relates to a polyfunctional isocyanate which is an acrylamide or methacrylamide homopolymer or interpolymer having 20 to 100% of its secondary α and tertiary α carbon atom amide...
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4297456 |
Process for working up isocyanate distillation residues
This invention relates to a process for working up the distillation residue obtained in the commercial production of tolylene diisocyanate by grinding, optionally accompanied and/or followed by...
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4294719 |
Polyisocyanates which contain carbodiimide groups and which are stable in storage
The present invention relates to stable equilibrium mixtures of carbodiimides, uretone imines and organic isocyanates and to stable solutions of carbodiimides and uretone imines in polyisocyanates...
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4286080 |
Extrusion process for the preparation of polyurethane ureas
The present invention relates to a process for the preparation of polyurethane ureas from relatively high molecular weight polyols, diisocyanates, water as chain lengthening agent and optionally...
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4281197 |
Hydrolytic decomposition method
Porous polyurethane solids such as open cell polyurethane foams are rapidly heated and hydrolytically decomposed into separate polyol component and diamine component by contacting the porous solids...
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4281089 |
Polyurethane compositions and process
Polyurethane prepolymers having free isocyanate groups are treated with polyfunctional isocyanate-blocking agents to cause branching prior to or simultaneously with the addition of a curing diol....
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4280006 |
Process for the production of polyisocyanate silicate plastics utilizing an alkali metal cellulose silicate condensation product
This invention relates to a process for preparing polyisocyanate silicate plastics by reaction of an alkali metal cellulose silicate condensation product with a compound having at least two...
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4276228 |
1,6,11-Undecane triisocyanate
There is provided a novel aliphatic triisocyanate, 1,6,11-undecanetriisocyanate having the formula, ##STR1## and a method for production of the same. The novel triisocyanate is produced by reacting...
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4255550 |
Polyurethane polymers characterized by carboxylate groups and hydroxyl groups in the polymer backbone
Water insoluble polyurethane polyether polymers that are soluble in ethanol at pH 11 characterized by a molecular weight above 6,000 and having carboxylate groups and hydroxyl groups in the polymer...
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4250292 |
Process for the preparation of polyurethane elastomers in which at least two reactant portions are introduced into separate positions of a screw machine
The present invention relates to an improved continuous process for the preparation of polyurethane elastomers which are distinguished from the products produced by known processes by increased...
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4247675 |
Polyurethane resins and polyurethane resin coating compositions
Polyurethane resins with an excellent weather resistance are provided by the reaction of polyols with trifunctional isocyanates which are expressed by the following general formula: ##STR1## (R=a...
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4243504 |
Fluorovinyl ether polymers
Fluorovinyl ether polymers consisting essentially of 60 to 99.9 mole percent of monomeric units --CF 2 CFY-- and 0.1 to 40 mole percent of the structural units ##STR1## wherein Y is F, H, Cl, Br,...
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4242488 |
Modified polyurethane adhesive compositions containing a carbamate ester additive useful in laminating substrates
A modified polyurethane adhesive composition characterized by its improved viscosity and high initial bond strength contains an isocyanate-terminated prepolymer or a fully reacted polyurethane and...
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4220749 |
Process for the production of modified polyisocyanates
This invention relates to a new process for the production of organic polyisocyanates containing polyuret groups, to polyisocyanates obtainable by this process and to the use of the products...
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4217436 |
Polyurethane forming compositions
Novel bis cyclic ureas are disclosed having the formula ##STR1## wherein C n H a n represents alkylene from 4 to 12 inclusive and provided there are at least 4 carbon atoms in succession in the...
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4214066 |
Organopolysiloxanes modified with poly-carbodiimide
Polycarbodiimide is present as a solid phase in a liquid polyorganosiloxane, preferably being formed therein by mixing a polyisocyanate with the polysiloxane followed by a carbodiimidization...
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4211848 |
Process for the production of polyisocyanate-polyester-silicate plastic
A polyisocyanate is reacted with an unsaturated polyester containing a vinyl monomer and a water-binding agent, then cured with water containing an oxidated silicon compound and an initiator such...
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4211804 |
Polyisocyanate compositions
Moisture-cure of a polyurethane prepolymer based on an aliphatic diisocyanate is readily accomplished when a prepolymer is first made from a polyhydroxy compound and an isocyanate group-terminated...
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4209605 |
Process for producing shaped polyurethane hydrogel articles
Continuous process for producing hydrogels by charging preselected feeds containing poly(oxyalkylene) polyols, organic diisocyanate and catalyst to a reaction zone followed by crosslinking by...
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4208486 |
Stabilization of organic amide solvents and polymer solutions thereof
Organic amides, solutions of polymers thereof, which polymers are subject to hydrolysis and degradation in the presence of amines, and polymers isolated therefrom are stabilized by the presence of...
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4203883 |
Aqueous colloidal dispersions of tertiary amine salts of urea-urethane polymers and method for manufacture
There are disclosed aqueous colloidal dispersions of tertiary amine salts of urea-urethane polymers of triamine-containing polyamines and isocyanate-terminated, urethane prepolymers having...
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4200701 |
Polymeric materials
A polymeric material which comprises an amorphous solid solution formed between a metallic compound and a polymer by virtue of ether, thioether or urethane linkages contained therein, the metal of...
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