Abstract: The present disclosure relates to the production of molded products containing recycled content, and more particularly polyurethane foam which includes polyol recovered from chemical recycling of polyurethane foam scrap, which polyol has been treated to optimize viscosity and/or reactivity characteristics.

Abstract: The present disclosure relates to the production of molded products containing recycled content, and more particularly polyurethane foam which includes polyol recovered from chemical recycling of polyurethane foam scrap, which polyol has been treated to optimize viscosity and/or reactivity characteristics.

Abstract: A prepolymer process for preparing a high resilience flexible polyurethane foam by reacting a polyisocyanate composition comprising at least 80% by weight of 4,4′-MDI and having an NCO value below 20% with a polyol composition comprising b1) an EO-rich polyol; b2) a polyol with an EO content between 20-50% and a primary hydroxy content of at least 50%; and b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; according to the following proportions: b1: 40-90 wt %, b2: 5-60 wt %, b3: 0-20 wt %. The invention also relates to reaction systems comprising the above components.

Abstract: Process for making free rise or slabstock flexible polyurethane foams with high resilience using diphenylmethane diisocyanate and a polyol composition comprising: (a) a polyoxyethylene-polyoxypropylene-polyol, having an average nominal hydroxyl functionality of 2-8, an average equivalent weight of 1000-4000 and containing 10-25% by weight of oxyethylene groups; (b) 3 to 8 parts by weight of water as the sole blowing agent or optionally together with CO2 as the sole blowing agents; and (c) 2 to 20, preferably 2 to 10 parts by weight of a polyether polyol having an average nominal hydroxyl functionality of 2-6, an average equivalent weight of 200-600 and containing at least 60% by weight of oxyethylene groups; and optionally (d) up to 30 and preferably 2-25 parts by weight of particulate material which is dispersed in said polyol composition; the amounts of (b)(ii) to (b)(iv) being calculated per 100 parts by weight of (b)(i); and optionally (e) auxiliaries and additives.

Abstract: A composite material with high resistance to impact energy, comprising expanded polypropylene, dispersed in a resin chosen among melaminic resin, phenolic resin and polyurethane resin and mixtures thereof.

Abstract: A method for producing manufactured articles made of composite material comprising the steps of: First completely filling a mold with granules of a pre-expanded polymer in granular form, selected from the group consisting of polystyrene, polypropylene, copolymer of polyphenylene oxide and polystyrene and mixtures thereof; subsequently injecting in the mold an isocyanate mixed with a compound possessing active hydrogen whereby they are filled in void spaces among the granules; and condensing said isocyanate with said compound possessing active hydrogen to yield a polyurethane foam which, by expanding, subsequently completely fills the spaces among the pre-expanded polymer granules.

Abstract: The invention relates to a one-shot or prepolymer process for preparing a visco-elastic polyurethane foam by reacting a polyisocyanate composition with a polyol composition comprising b1) an EO-rich polyol; b2) a polyol with an EO content between 20-50% and a primary hydroxy content of at least 50%; b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; and b4) a polyalkyleneglycol; according to the following proportions: b1: 30-85 wt %, b2: 5-65 wt %, b3: 5-40 wt %, b4: 0-50 wt %. The invention also relates to reaction systems comprising the above components and to the polyol composition.

Abstract: The invention relates to a prepolymer process for preparing a high resilience flexible polyurethane foam by reacting a polyisocyanate composition comprising at least 80% by weight of 4,4′-MDI and having an NCO value below 20% with a polyol composition comprising b1) an EO-rich polyol; b2) a polyol with an EO content between 20-50% and a primary hydroxy content of at least 50%; and b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; according to the following proportions: b1:40-90 wt %, b2:5-60 wt %, b3:0-20 wt %. The invention also relates to reaction systems comprising the above components.

Abstract: Process for making molded flexible polyurethane foams MDI-based foams with high resilience using MDI and a polyol composition.

Abstract: A composite material with high resistance to impact energy, comprising an expanded polymer selected among polystyrene, polypropylene, copolymer of polyphenylene oxide and polystyrene and mixtures thereof, dispersed in a resin chosen among melaminic resin, phenolic resin and polyurethane resin and mixtures thereof.

Abstract: A method of molding a heat-resistant container comprising a primary blow molding step, a primary heat treatment step, a secondary heat treatment step, and a secondary blow molding step. In the primary blow molding step a synthetic resin preform is blow-molded into a primary blow-molded article. In the primary heat treatment step, the primary blow-molded article is held in a heat treatment mold and subjected to heat treatment. The primary blow-molded article, removed from the mold, shrinks, and forms an intermediate molded article. In the secondary heat treatment step, the intermediate molded article is subjected to heat treatment outside the mold. At this time, almost no shrinkage occurs. In the secondary blow molding step, the intermediate molded article is blow molded within a final blow mold to form a final molded product.

Abstract: The present invention is based upon the discovery that composite open-cell foam structures, such as carpet underlay cushions, having improved compression resistance and better wear characteristics can be manufactured by utilizing a carboxylated styrene-butadiene rubber latex which is comprised of a styrene-butadiene rubber latex and a carboxylated styrene-butadiene rubber latex.

Abstract: The invention provides a molded polyurethane article having internal mold release properties. The polyurethane article comprises the reaction product of an isocyanate component (I) and an isocyanate-reactive polyol component (II). The polyol component comprises an isocyanate-reactive polyol (A) having a molecular weight from 100 to about 10,000 and an effective amount of an internal mold release composition (B). The internal mold release composition comprises a silicon-containing polymer (a) and a diester functional compound (b). The diester compound comprises the reaction product of an aromatic dicarboxylic acid (i) and an alcohol having from 2 to 30 carbons.

Abstract: A molded polyurethane foam system utilizing hydrofluorocarbons and alkane hydrocarbons as the blowing agent. The molded polyurethane foam products of the invention have a high-density integral skin and a low-density core. The blowing agent can be the HFC, tetrafluoroethane (HFC-134a) chemical alone or a mixture of tetrafluoroethane (HFC-134a) with one or more of the following: alkanes (such as 2-methylbutane, pentane and heptane) and other inert volatile organic compounds with boiling points in the 15.degree.-100.degree. C. range (such as pentene and acetone).

Abstract: A process for making flexible polyurethane foam, employing a silicone surfactant composition containing 5-20 wt % of a defined low molecular weight silicone surfactant and 95-80 wt % of a defined high molecular weight silicone surfactant. Use of the claimed mixture of surfactants provides product foams having improved breathability relative to foams produced using high molecular weight silicone surfactant alone.

Abstract: In a method for the preparation of highly elastic, cold curing polyurethane foams, equilibrated organofunctional polysiloxanes of the average general formula ##STR1## wherein R.sup.1 is methyl or R.sup.2,R.sup.2 is chloropropyl,n has a value of 0 to 12,m has a value of 1 to 8 when R.sup.1 is methyl and a value of 0 to 6 when R.sup.1 is chloropropyl,are added in amounts of 0.01 to 2.0% by weight, based on the polyols, to the reaction batch.The stabilizing properties of the organofunctional polysiloxanes are superior to those of the known products. The foams, produced pursuant to the invention, have a coarser cell structure and a higher elasticity. The foams are more open-celled as measured by the impression force.

Abstract: The present invention is directed to the production of free-rise polyurethane foams using sterically hindered diamines of the formula (e) ##STR1## and/or ##STR2## in which R.sup.1 and R.sup.2 may be the same or different and represent C.sub.1 -C.sub.4 -alkyl andR.sup.3 and R.sup.4 may again be the same or different and represent H or CH.sub.3, is added to said reaction mixture.

Abstract: A soft polyurethane foam produced from a polyhydroxy compound, a polyisocyanate, a catalyst, a foam stabilizer, water and/or a blowing agent, the improvement wherein the polyhydroxy compound is[1] a terminal hydroxyl group-containing urethane prepolymer obtained by the reaction of at least one polyol selected from the group consisting of the following (A) to (H) with a polyisocyanate and/or[2] at least one polyo selected from the group consisting of the following (D), (E) and (F):(A) a low-molecular-weight polyhydroxy compound,(B) a polyoxyalkylene polyol,(C) an aromatic ring-containing diol,(D) a polyester ether polyol and optionally a low-molecular-weight polyhydroxy compound and at least one compound selected from aliphatic dicarboxylic acids, aromatic dicarboxylic acids, and anhydrides and derivatives thereof,(E) a polyester ether polyol and optionally a low-molecular-weight polyhydroxy compound and at least one compound selected from aliphatic dicarboxylic acids, aromatic dicarboxylic acids, and anhydrid

Abstract: High resiliency polyurethane foams are typically prepared by reaction of polyols blends comprising conventional and polymer containing polyols with aromatic polyisocyanates. Improved physical properties such as tensile strength, tear strength, and elongation of these foams can be achieved by incorporating 0.5 to 3.0 parts 2,3-dibromopropanol into the foam formulation.

Abstract: An open celled, dimensionally stable, flexible urethane foam and method of preparing such foam, which method comprises adding a cell opening dimensionally stabilizing amount of an additive to a foamable urethane composition, and thereafter foaming the composition containing such additive to provide a dimensionally stable, flexible urethane foam product. The additive mixture employed comprises an ester reaction product of a long chain acid with polyethylene or polypropylene glycols and/or contains free acid to provide for a desired acid value. The dimensionally stable, flexible foam product produced is particularly useful in the automotive industry as a flexible molded-type foam for use as cushions and seats.

Abstract: An open celled, dimensionally stable, flexible urethane foam and method of preparing such foam, which method comprises adding a cell opening dimensionally stabilizing amount of an additive to a foamable urethane composition, and thereafter foaming the composition containing such additive to provide a dimensionally stable, flexible urethane foam product. The additive mixture employed comprises an ester reaction product of a long chain acid with polyethylene or polypropylene glycols and/or contains free acid to provide for a desired acid value. The dimensionally stable, flexible foam product produced is particularly useful in the automotive industry as a flexible molded-type foam for use as cushions and seats.

Abstract: Disclosed are a reactive fire-protective formulation containing halogen and phosphorous compounds for polyurethane rigid foam materials and a process for the preparation thereof. The formulation consists of a liquid homogeneous mixture of a polyether-polyol based on an aromatic amine or sorbitol or tetrol or a mixture thereof, a neopentane containing bromo and hydroxy groups and a compound containing phosphorus and nitrogen and is particularly suitable for the preparation of preformulated polyurethane systems (component A).

Abstract: Polyol component essentially consists of polyesterpolyetherpolyol containing polyesterpolyol by the weight ratio of 100:0 to 20:80, in which the polyesterpolyetherpolyol is a copolymer of polytetramethyleneglycol (PTMG) and .epsilon.-caprolactone by the weight ratio of 20:80 to 80:20 with an average molecular weight of 1000 to 3000 and the polyesterpolyol is a condensate of adipic acid as a main acid component with an average molecular weight of 1000 to 3000, is reacted with isocyanate component essentially consists of 4,4'-diphenylmethanediisocyanate (MDI) to make a prepolymer with terminal radical of NCO.

Abstract: The present invention is directed to a process for the production of a flexible polyurethane foam comprising reacting(a) an organic polyisocyanate, and(b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1,(c) in the presence of(i) a blowing agent,(ii) a catalyst, and(iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing

Abstract: The present invention relates to a process for the production of foams containing urethane groups by reacting polyether polyols with polyisocyanates in the presence of water and in the presence of an alkaline catalyst, a compound containing a labile halogen atom and, optionally, a tertiary nitrogen containing chain extender.The present invention also relates to the foams obtainable by this process.

Abstract: A method of manufacturing polyurethane foam by a reaction of organic polyisocyanates and polyols in the presence of a foaming agent and catalysts comprises using as the catalyst, a salt of carbonic acid and polyamine represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are an alkyl group having 1-4 carbon atoms or R.sub.1 and R.sub.2 are combined to form a heterocyclic ring having 3-6 carbon atoms together with a nitrogen atom; and R.sub.3 is an alkylene group.

Abstract: The present invention relates to a process for the preparation of a cellular polyurethane by the reaction of(A) a polyisocyanate with(B) an isocyanate reactive component containing(1) at least one component having a molecular weight of about 60-2000 and a functionality of 2 to 8, containing isocyanate reactive groups,(2) optionally at least one component having a molecular weight of about 2000 to 12,000 and a functionality of 2 to 8 containing isocyanate reactive groups.(3) about 0.1 to 30 parts, based on 100 parts of (B1)+(B2), of a liquid adduct of an amine and carbon dioxide, and(4) optionally water, blowing agents, foam stabilizers, catalysts and other auxiliary agents and additives,characterized in that the liquid adduct of amine and carbon dioxide is liquid at 20.degree. C., optionally contains water, and is an adduct of carbon dioxide and an amine having at least one amino group and containing at least one primary, secondary or tertiary hydroxyl group, which amine may be solid or liquid at 20.degree.

Abstract: A stable dispersion of a polymer in a polyol is prepared by reacting an organic polyisocyanate with a short-chain polyol in a high molecular weight polyol containing a relatively high primary hydroxyl group content, the ratio of the content of primary hydroxyl groups in the short-chain polyol to that in the high molecular weight polyol being at least a critical lower limit of about 3.5. The reaction is further carried out in the presence of a small proportion of water to achieve a reduction in the viscosity of the resulting dispersion. The dispersion is used in preparing high resilience polyurethane foam having desirable physical properties and which is of utility in a wide variety of cushioning applications.

Abstract: The invention relates to a process for the manufacture of highly resilient, cold-curing polyurethane foams with the distinctive feature that polysiloxane-polyoxyalkylene block copolymers with the following characteristics are used as foam stabilizers:(a) the polysiloxane block is linear or branched and contains an average of 4 to 25 silicon atoms, wherein the organic radicals linked to the silicon atoms are polyoxyalkylene or methyl radicals and up to 30% of the methyl radicals can be replaced by substituted alkyl radicals with 1 to 4 carbon atoms, and/or phenyl radicals, and mixtures thereof;(b) the polyoxyalkylene portion consists of at least two polyoxyalkylene blocks, A.sub.1 and A.sub.2, which are formed from oxyethylene and oxypropylene units, wherein block A.sub.1 is formed from 45 to 100 mole percent of oxyethylene units and 55 to 0 mole percent of oxypropylene units and block A.sub.

Abstract: A method for making polyurethanes in a mold that is cooler than usual; i.e., at a temperature less than 120.degree. F., is described. Normally, polyurethanes made in relatively "cold" molds contain numerous surface voids. However, N-alkylmorpholines have been discovered to be effective "cold sink" catalyst additives which permit void-free polyurethane formation even in cooler than average molds. The additive should comprise from about 10 to about 30 wt. % of the entire catalyst portion of the polyurethane formulation.

Abstract: Processes for sealing and strengthening water-bearing geological formations by injection thereinto a polyurethane-resin-forming composition that is especially suitable for this purpose which comprises a conventional polyisocyanate, a conventional polyol, an accelerator for the reaction between the polyisocyanate and the polyol, and a foam stabilizer.

Abstract: An improved game ball is manufactured from a polyurethane foam prepared from a hydroxyl-containing diene polymer, a catalyst system comprised of a tin compound and a tertiary amine and a surfactant system comprised of a non-hydrolyzable silicone-polyether copolymer and a polydialkylsiloxane.

Abstract: High-resilience polyurethane foams made from polyols which are alkylene oxide adducts of alkylenediamines have been found to have surprisingly improved resistance to shrinkage. These foams have particular utility as seating support because they can be molded with good processing characteristics yet contain open cells and resist shrinkage. It is preferred that the polyols used be based on ethylenediamine.

Abstract: Reaction products of an organic polyisocyanate with a reactive diamine such as bis(4-aminocyclohexyl)methane and isophorone diamine, prepared at a temperature of between 135.degree. C. and 200.degree. C., are used to prepare polyurethanes useful for comfort cushioning applications such as automotive seating, furniture, mattresses, and large automotive body panels.

Abstract: Low temperature flexible polyurethane elastomers are prepared by reacting organic polyisocyanates with polyester polyols which have glass transition temperatures of -10.degree. to -80.degree. C. and incorporating therein alkoxylated esters of fatty acids and/or alkoxylated terpene alcohols.

Abstract: The cure time of polyurethane prepolymer curable with water to form polyurethane hydrogel is prolonged by the addition to the water of certain micelle-forming adducts which substantially extend the cure time.

Abstract: Amino catalyst mixtures containing from 10 to 95 percent by weight of 2-diisopropylamino ethanol and from 5 to 90 percent by weight of an amine or mixture of amines selected from the group described herein has been found to be a replacement for N-ethylmorpholine in the production of polyurethane foams.

Abstract: Tertiary amine catalyst mixtures comprising at least one hydroxyalkyl piperazine, preferably 2-hydroxyethyl piperazine or 1,4-di-(2-hydroxyethyl) piperazine, and at least one other tertiary amine for increasing the processability of hydroxyalkyl piperazine in controlling the water-isocyanate reaction rate to obtain optimum performance in cellular polyurethane foam formulations and/or enhancing the compatibility of hydroxyalkyl piperazine with other foaming ingredients in flexible polyester polyurethane foam formulation; and a process for producing cellular polyurethanes, such as flexible polyester or polyether polyurethane foam and high resilience polyether polyurethane foam, by effecting the reaction of an organic polyol reactant and an organic polyisocyanate reactant in the presence of a blowing agent and said tertiary amine catalyst mixture, the resulting cellular polyurethanes exhibiting very low residual amine odor.

Abstract: A select, low density semi-flexible foam polymer composition is prepared from a very select reaction mixture which is characterized by a foaming agent which consists essentially of water and is substantially free of fluorinated hydrocarbon compounds, and a relatively low reaction mixture NCO/OH index of from about 20 to about 70. The foam polymer composition is particularly useful in packaging fragile or shock-sensitive objects.

Abstract: This invention relates to polymer/polyols prepared from an ethylenically unsaturated monomer or a mixture of such monomers and characterized by the utilization, in the preparation thereof, of certain preformed stabilizers tailored to the monomer system employed, a method of preparing such polymer/polyols, and to the preformed stabilizers themselves. In general, the stabilizer, compatible with the polyol portion of the polymer/polyol, comprises a copolymer of an anchor portion consisting of an ethylenically unsaturated monomer or mixture of such monomers and a solvatable portion consisting of a propylene oxide polymer having a number average molecular weight of at least 800. The resulting polymer/polyols are stable, fluid, essentially free from scrap and seeds as produced and contain relatively small polymer particles. In accordance with one aspect of this invention, the polymer particles are essentially spherical in shape.

Abstract: Siloxane copolymer mixtures comprising a minor amount of certain high molecular weight (e.g., 4000 to 30,000) siloxane-oxyalkylene copolymers and a major amount of certain low molecular weight (e.g., 300 to 1100) siloxane-oxyalkylene copolymers or cyanoalkylsiloxanes in specifically defined mixture ratios; a process for producing high resilience polyurethane foam utilizing as a foam stabilizer said siloxane copolymer mixtures; and the foams derived therefrom.

Abstract: A flexible, elastic, uniform polyurethane foam is cold foamed and set from a composition of matter comprising (i) a polyisocyanate, (ii) a polyether-polyol having a molecular weight ranging from 800 to 50,000 and at least 2.1 hydroxyl radicals per mol, of which hydroxyl radicals at least 35% are primary hydroxyl radicals, (iii) a stabilizing amount of an organosilicon stabilizer therefor, and (iv) a blowing agent; said organo silicon stabilizer being a triorganosilylated polypentaerythritol having the structural formula:(R.sub.3 SiOCH.sub.2).sub.4-a C{CH.sub.2 OCH.sub.2 C(CH.sub.2 OSiR.sub.3).sub.3 }.sub.awherein each R, which may be the same or different, is methyl, ethyl or vinyl, at least one R per each --SiR.sub.3 group being methyl, and further wherein a is 1, 2, 3 or 4.

Abstract: A novel flexible polyurethane foam has a substantial number of cells with an internal residual cell surface greater than 60% and less than 90%. The novel foams have improved vibration damping characteristics.

Abstract: The instant invention is directed to a process for heat sealing flexible polyurethane foam, comprising:A. reacting and foaming a polyurethane foam produced by the steps comprising reacting:(I) an organic polyisocyanate;(II) a polyol having a molecular weight of 2,000 to 8,000 comprising the adduct obtained by sequentially reacting:(a) a polyhydroxyl initiator, with a functionality of 2 to 5 and a weight average molecular weight as determined by gel permeation chromatography of from 62 to 200; with(b) 10 to 90%, most preferably 10 to 50%, by weight, based on the total oxide present in (b)+(c)+(d), a first alkylene oxide; and subsequently reacting the product with(c) 10 to 80%, preferably 20 to 50% by weight, based on the total oxide present in (b)+(c)+(d), 4,4,4-trichloro-1,2-epoxybutane and/or epihalohydrin; and subsequently reacting the product with(d) 10 to 60%, most preferably 10 to 40%, by weight, based on the total oxide present in (b)+(c)+(d), a second alkylene oxide.

Abstract: Organosiloxane copolymers containing alkyl groups having from 5 to 20 carbon atoms that have beneficial utility as foam stabilizers in the manufacture of low density high resilience polyurethane foam; solutions of such copolymers; a process for producing low density high resilience polyurethane foam utilizing as a foam stabilizer said organosiloxane copolymers; and the foams derived therefrom.

Abstract: Cold-cured molded polyurethane flexible foams having improved vibration damping properities are made by foaming in the presence of (1) a high molecular weight predominantly linear siloxane polyoxyalkylene block copolymer and (2) a solvent which is compatible with the block copolymer and which has a viscosity of 3 to 100 cps and a surface tension between 15 to 60 dynes/cm.

Abstract: High-resiliency flexible polyurethane foams having at least a 10 percent vinylic polymer or copolymer content may be rendered flame retardant by incorporating therein effective amounts of ANTIBLAZE 19, reputed to have the following structure ##STR1## wherein x is equal to 0 or 1. This compound is also synergistic with other flame-retardant compounds.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved properties. The product comprises the cured reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality and a polyisocyanate. The reaction product is cured by subjecting it to an ambient temperature of from about 290.degree.-425.degree. F. for a time sufficient to achieve an improvement in properties. The invention is also the resulting polyurethane.

Abstract: A stable high-resilient (HR) flexible polyurethane foam may be made from an MDI type isocyanate, a polyether polyol and an amount of diethanolamine in an amount effective for preventing splits in the finished foam. The foams disclosed herein use water as the blowing agent. The disclosed foams have excellent properties and process without splitting.

Abstract: Novel high resilience (HR) urethane foams are prepared from tolylene diisocyanate and novel polymer/polyol compositions made with acrylonitrile and vinylidene chloride monomers. The acrylonitrile:vinylidene chloride-polymer/polyol compositions enhance the load-bearing properties and decrease the flammability of HR foams made with them.