Described herein is a process for producing flexible polyurethane foams, in which (a) polyisocyanate prepolymer, is mixed with (b) polymeric compounds having groups reactive toward isocyanates, (c) optionally chain extenders and/or crosslinkers, (d) catalyst, (e) blowing agent comprising water and (f) optionally additives to give a reaction mixture and reacted to give a flexible polyurethane foam.

A polyurethane composition comprising a mixture comprising at least two aldehyde scavengers, a polyurethane product, and a process for making polyurethane foam are disclosed. The mixture of scavenger compounds can reduce, if not eliminate, the emissions of aldehydes from polyurethane foams. The scavenger compounds comprise at least one member selected from the group consisting of: phenol or substituted phenol, a 1,3-dicarbonyl compound, a polyamine bearing a 1,3-propanediamino function, melamine, a 1,2-diaminocycloalkane, an ammonium salt, and aminosiloxane.

A rubber composition for downhole tools having excellent degradability and storability is provided. The rubber composition for downhole tools includes degradable rubber, a degradation accelerator, and a degradation inhibitor. The degradation accelerator is at least one type of the compound represented by Formula (I) or Formula (II) below. The degradation inhibitor is at least one type selected from the group consisting of carbodiimide compounds, oxazoline compounds, oxazine compounds, and epoxy compounds. The content of the degradation accelerator is from 0.1 to 20 parts by mass relative to 100 parts by mass of the degradable rubber. The content of the degradation inhibitor is from 0.1 to 3 parts by mass relative to 100 parts by mass of the degradable rubber.

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.

The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to polyurethane and polyisocyanurate foams having an open-cell, closed-cell or a combination of open and closed cell structure, and methods for their preparation. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol and a catalyst which is an adduct of an amine and an organic acid.

A method for the manufacture of a polyurethane includes forming a curable composition comprising an active hydrogen-containing component, an organic isocyanate component reactive with the active hydrogen-containing component, a metal catalyst, preferably a metal acetylacetonate, and a catalytic inhibitor effective to inhibit gelling of the curable composition for at least 4.7 minutes, preferably at least 5 minutes at a temperature of 55 C.; processing the curable composition at a first temperature without curing the curable composition; and curing the curable composition to provide the polyurethane.

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.

The invention is directed to methods of preparing compositions used to manufacture polyurethane foams. The invention provides methods for making compositions used to make polyurethane foams that include amine catalysts, but formulated such that catalytic potency is not diminished over time before the forming of a foam.

The present disclosure relates generally to curable resins, in particular dual-cure resins, and related methods for use in an additive fabrication (e.g., 3-dimensional printing) device.

Described herein is a process for producing flexible polyurethane foams, in which (a) polyisocyanate prepolymer, is mixed with (b) polymeric compounds having groups reactive toward isocyanates, (c) optionally chain extenders and/or crosslinkers, (d) catalyst, (e) blowing agent comprising water and (f) optionally additives to give a reaction mixture and reacted to give a flexible polyurethane foam