According to the invention, thermoreversible hydrogels are provided, which are prepared from chain-extended poloxamers, having advantageous properties. In addition, the invention provides thermoreversible hydrogels, including biological materials, and a process for the preparation thereof, thermoreversible hydrogels including living cells, application systems for pharmaceutical applications, and an in-vitro-method for forming a composition on a surface.

Tiles are adhesively bonded to substrates such as kitchen or bathroom walls by a process in which a tile adhesive is used, the tile adhesive being a one component RTV-1 moisture-curable tile adhesives having properties superior to conventional cementitious and RTU tile adhesives, which contain at least one low viscosity alkoxysilyl-functional polymer, a silicone resin, an aminoalkyl-functional alkoxysilane or partial hydrolysate thereof, and in excess of 60 weight percent mineral filler, of which at least 50 weight percent is a non-reinforcing filler.

This disclosure relates to new injectable hydrogel materials that consist of water gellants comprising linear hydrophilic polymers that comprise hydrogen bonding units in the backbone combined with cross-linkable end groups, resulting in dynamic yet firm hydrogel materials that are easily processable, are highly elastic, show adhesive properties and are self-healing and are especially suitable for biomedical applications.

The invention relates to a curable composition comprising a) at least one polymer having at least one terminal group of the general formula (I)

-A.sub.n-R-SiXYZ(I),

wherein A is a divalent bonding group containing at least one heteroatom, R is selected from divalent hydrocarbon residues having 1 to 12 carbon atoms, X, Y, Z are, independently of one another, selected from the group consisting of a hydroxyl group and C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkoxy, and C.sub.1 to C.sub.8 acyloxy groups, wherein X, Y, Z are substituents directly bound with the Si atom or the two of the substituents X, Y, Z form a ring together with the Si atom to which they are bound, and at least one of the substituents X, Y, Z is selected from the group consisting of a hydroxyl group, C.sub.1 to C.sub.8 alkoxy or C.sub.1 to C.sub.8 acyloxy groups, and n is 0 or 1; and b) at least one compound of the general formula (II)

##STR00001##

wherein R is same or different and is, independently from one another, selected from the group consisting of a hydrogen atom and hydrocarbon residues having 1 to 12 carbon atoms, and Ar is selected from aryl groups, and adhesive, sealant, or coating materials comprising the composition and use thereof.

A curable composition can have a surface with amphiphilic properties which is thus able to counteract biofouling. The curable composition includes: a component A: at least one polysiloxane, a component B: at least one polyether bearing silyl groups and/or a reaction product of a polyether bearing silyl groups with one or more isocyanate-containing compounds, and a component C: at least one catalyst.

Low viscosity mixtures of polysilylated polyethers are described. The mixtures include a) 50 to 95 weight percent of one or more first polysilylated polyethers which are free of urea groups, have an average of two or more terminal hydrolysable silyl groups per molecule and have a molecular weight of 4,000 to 20,000 and 50 to 5 weight percent of one or more second polysilylated polyethers which are free of urea groups, have an average of 1.8 to 4 terminal hydrolysable silyl groups per molecule and have a molecular weight of 1000 to less than 400. The mixtures have surprisingly low viscosities, and are useful as curable components of adhesive, sealant, caulking and/or coating compositions.

Provided herein is a pigmented aqueous basecoat material including a hydroxy-functional polyether-based reaction product that is prepared by a urethane group-forming reaction of: (a) at least one component including isocyanate groups that is prepared by the urethane group-forming reaction of at least one organic diisocyanate (a1) with at least one polyether (a2) of the general structural formula (I).

##STR00001##

R is a C.sub.3 to C.sub.6 alkylene radical, and n is selected accordingly such that a polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol,
the components (a1) and (a2) being used in a molar ratio of 1.8/1.7 to 3.0/1.0, and the resulting component (a) having an isocyanate content of 0.5 to 10.0% with (b) at least one organic polyol.

The invention relates to an ink composition, the ink composition including a pinning agent. The pinning agent provides the ink composition with thermogelling behavior. The invention further relates to a pinning agent suitable for an ink composition. The invention further relates to a method for applying an image to a receiving medium using an ink composition including a pinning agent.

A one-component epoxy-modified polyurethane and/or urea adhesive includes very high levels of reactive urethane group- and/or urea group-containing tougheners, an epoxy resin and epoxy hardener. These adhesives are formulated to cure at high temperatures and surprisingly provide high elongations, excellent thermal stability and good adhesive properties.

The present invention relates to novel hydroxy-terminated (per)fluoropolyether polymer derivatives comprising urethane moieties and their use as additive in compositions for coating substrates, notably glass, metal and plastic.