A sealant material for sealing joints between male and female mating parts comprising: (a) an elongate flexible thread suitable for wrapping around at least one of the parts, and (b) a joint sealing composition comprising an anaerobically curable composition in solid form,
the flexible thread being coated with the anaerobically curable composition. This provides a reactive composition on the thread for sealing joints.

A compound of formula (I) having advantageous properties when used as a latent curing agent for compositions containing isocyanate groups, and to compositions containing the compound of formula (I). The compound of formula (I) is odourless, is liquid and has comparatively low viscosity at room temperature and is stable in storage together with isocyanates. It makes possible odourless single-component polyurethane compositions which have good stability in storage, do not produce bubbles when cured in the presence of moisture, and cause no problematic odour emissions, giving a cured elastic material having good mechanical properties, good heat stability, a surprisingly non-adhesive surface and little tendency towards plasticizer migration.

A sealing member according to the present invention is a sealing member against a synthetic oil containing an ester-type additive, and includes 95.0% by mass or more and 99.5% by mass or less of a para-phenylene diisocyanate-based polyurethane and 0.5% by mass or more and 5% by mass or less of a same compound as the ester-based additive. The sealing member according to the present invention has a smaller friction coefficient and more excellent deformability than conventional sealing members and that can inhibit swelling caused by a synthetic oil.

Disclosed is a foldable electronic device including a sealing member for protecting a side surface of flexible display. A foldable electronic device according to various embodiments of the disclosure may include: a foldable housing configured to be folded and unfolded, a flexible display disposed in the foldable housing, the flexible display including a display panel configured to display image information and a cover window covering a first surface of the display panel on which image information is displayed, the display panel having at least one portion configured to be bent according to folding and unfolding operations of the foldable housing, and a seal contacting a region of a side part of the flexible display with reference to the first surface of the flexible display, the region including a space between the cover window and the display panel, wherein the seal may include a polymer material which is configured to be bent according to the bending operation in a state of being in contact with a side surface of the flexible display during the bending operation of the flexible display.

A sealant material for sealing joints between male and female mating parts comprising: (a) an elongate flexible thread suitable for wrapping around at least one of the parts, and (b) a joint sealing composition comprising an anaerobically curable composition in solid form,
the flexible thread being coated with the anaerobically curable composition. This provides a reactive composition on the thread for sealing joints.

The present disclosure relates to acid-blocked alkylaminopyridine catalysts for use in a polyurethane formulation. The polyurethane formulation may include the acid-blocked alkylaminopyridine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound.

A urethane oligomer according to a) or b) has: a) at least two backbone residues R issued from a polyisocyanate without the NCO groups, linked between them with a diol residue R.sub.B (diol without the two OH groups) by two urethane bonds and each backbone residues R carrying (or linked to) at least two urethane segments each containing at least one terminal allyl group, b) at least one backbone residue R issued from a polyisocyanate without the NCO groups, the backbone residue R carrying (or linked to) at least two urethane segments each linked to R by one urethane bond with at least one urethane segment (arm) containing at least one terminal allyl group, and at least one urethane segment (arm) containing at least one terminal (meth)acrylate group. A curable composition containing the urethane oligomer reduces oxygen inhibition in coatings, adhesives, sealants or in resin matrix with good surface properties.

The present invention relates to a compound of the following formula (I): Formula (I),

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as well as the polyurethanes obtained from these compounds, and their uses in sealant formulations.

Described herein is a process for preparing a polyurethane elastomer including the steps of (A) preparing an isocyanate prepolymer (a), where the isocyanate prepolymer has an isocyanate content in the range of ≥1 wt.-% to ≤9 wt.-%, and (B) preparing a reaction mixture by mixing at least one epoxy compound (b) with the isocyanate prepolymer (a) in presence of at least one catalyst (c), and where the amount of the alkali metal or alkaline earth metal salt is 0.00001 to 0.1 mol per kg of the total weight of the isocyanate prepolymer (a), the epoxy compound (b) and the catalyst (c), and heating the mixture to at least 80° C. to obtain the polyurethane elastomer. Also described herein are a polyurethane elastomer obtained by process and a method of using the polyurethane elastomer as part of a roller or as a sealant.

Process for producing PU foams by reacting at least one polyol component with at least one isocyanate component in the presence of one or more catalysts that catalyse the isocyanate-polyol and/or isocyanate-water reactions and/or isocyanate trimerization, and optionally one or more chemical or physical blowing agents, with use of SiOC-bonded polyether siloxanes having branching in the siloxane moiety, prepared from branched siloxanes bearing acetoxy groups, wherein a sufficient amount of the SiOC-bonded polyether siloxane having branching in the siloxane moiety is added that the proportion by mass of this polyether siloxane (e) based on the finished PU foam is from 0.0001% to 10% by weight.