The present invention relates to a method that includes providing a formulation having an isocyanate-functional prepolymer and a curing component comprising an amino-functional aspartic ester of the general formula (I) ##STR00001##
applying the formulation to a cell tissue; and curing the formulation such that the loss of blood (haemostatic) or tissue fluids is staunched or leaks in cell tissues are sealed.

Textiles backed with a polyurethane cushion are produced by applying a layer of frothed polyurethane-forming mixture to a surface of the textile. The mixture contains both water and a physical blowing agent. The layer expands due to the action of the water and the physical blowing agent and cures to form an attached cushion having a density of 176 g/L or less.

The invention relates to a method for producing seals made of polyurethane, in which (a) aliphatic polyisocyanate, (b) compounds containing at least two isocyanate-reactive groups, (c) catalysts, (d) antioxidants and/or light stabilizers, and, optionally, (e) blowing agents, and (f) auxiliary agents and/or additives are mixed to form a reaction mixture, and the reaction mixture is allowed to complete the reaction to form polyurethane. The seal made of polyurethane has a Shore A hardness of less than 90 and a density of at least 850 g/L. The polymeric compounds having groups reactive toward isocyanate include b1) polyetherols having a functionality of 2 to 4 and a hydroxyl number of 20 to 100 mg KOH/g, b2) hydrophobic polyols having an OH number of less than 180 mg KOH/g and a functionality of greater than 2 to 3, and b3) chain extenders.

A polyurethane foam for comfort application, includes the reaction product of a first composition that includes from 20 wt % to 80 wt % of an aqueous component and from 20 wt % to 80 wt % of a hydrophilic isocyanate-terminated prepolymer component. The aqueous component includes at least 90 wt % of water based on the total weight of the aqueous component and the hydrophilic isocyanate-terminated prepolymer component has a free NCO content from 1 wt % to 15 wt % and is a reaction product of a second composition that includes an isocyanate component and an isocyanate-reactive component. The isocyanate component includes at least 90 wt % of methylenediphenyl diisocyanate (MDI) and a weight ratio of 4,4′-methylene diphenylisocyanate isomer to 2,4′-methylene diphenylisocyanate isomer greater than 1:1 and less than 10:1, the isocyanate-reactive component including polyethylene glycol and a polyoxypropylene-polyoxyethylene polyol having a molecular weight of from 3000 g/mole to 7500 g/mole and a polyoxyethylene content of at least 50 wt %, and the hydrophilic isocyanate terminated prepolymer component having an polyoxyethylene content from 45 wt % to 75 wt %, based on the total weight of the second composition.

The present invention aims to provide a cervical canal sealant that can be used as a sealant to stop bleeding in the uterus and vaginal discharge, particularly, a cervical canal sealant that can block the cervical canal to inhibit amniotic fluid leakage and that can also be peeled off without damaging reproductive tissue. The present invention relates to a sealant for reproductive organs in which a cured product (X) at 25° C. has a storage modulus G′ of 200 to 2,000 kPa, the cured product (X) being a cured product obtained by curing the sealant for reproductive organs to a thickness of 120 to 150 μm.

Disclosed is an adhesive system and method of use thereof wherein the adhesive composition comprises a moisture curable adhesive comprised of an isocyanate terminated prepolymer and a cure accelerator having two curatives components having different cure kinetics. The cure accelerator is comprised of an isocyanate reactive compound comprising a primary, secondary or tertiary amino group, or a primary thiol group having faster curing kinetics resulting an increase in bead stability within the first minutes and a polyol selected from a diol and/or triol with slower curing kinetics allowing for sufficient open time and yet a fast strength build up. The preferred method of application of the adhesive system is via a 1K application gun.

Methods of using a curable composition, the curable composition including at least one polyether having blocked hydroxyl groups as the plasticizer on at least one alkaline substrate. The curable composition is storage-stable, easy to handle and highly elastic after curing, and does not show any tendency to separate or migrate. It enables elastic bonding, sealing or coating of alkaline substrates, such as, in particular, fresh or green concrete or cement mortar, without occurrence of troublesome odors triggered by plasticizer hydrolysis.

The disclosure includes brominated alkenyl alcohols, their use as a flame retardant in polyurethane and polyurethane foams, and polyurethanes containing the brominated alkenyl alcohols. Compositions, methods, and processes are disclosed. The brominated alkenyl alcohols used as flame retardants in polyurethanes can be generally described by Formula (I), the scope of which is disclosed herein.

##STR00001##

The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Embodiments of the present disclosure are directed towards formulated polyol compositions that include a first polyether polyol having an average hydroxyl number from 112 to 280 mg KOH/g, a second polyether polyol having an average hydroxyl number from 18.5 to 51 mg KOH/g, a third polyether polyol having an average hydroxyl number from 20 to 70 mg KOH/g, and at least one of: fourth polyether polyol having an average hydroxyl number from 112 to 280 mg KOH/g; and a methoxypolyethylene glycol having an average hydroxyl number from 56 to 190 mg KOH/g.