Byk-chemie Gmbh

Elantas Gmbh

Marc Eberhardt

Jürgen Omeis

Sylvia Bühne

Daniela Leutfeld

René Nagelsdiek

Berthold Jacobs

Guillaume Wojciech Jaunky

Petra Della Valentina

Mark Heekeren

Olaf Muschiolik

Ulrich Orth

Wojciech Jaunky

Michael Bessel

Jasmin Rudner

Jürgen Hartmann

Klaus-W Lienert

Agnetha Klein

Agnetha Schmitt

Jia Cheng

Bianca Morhenn

Ina Kober

Sven Tenbusch

Majdi Al-Masri

Christian Dams

Sylvia BÜHNE

Sylvia Buehne

The invention relates to a method of improving the surface properties of a radiation cured coating, comprising adding to a radiation-curable coating composition 0.1 to 10.0% by weight, based on the total weight of the radiation-curable coating composition, of a polymer (A) having a polysiloxane backbone and at least two methacryloyl groups connected to the polysiloxane backbone via linking groups, wherein the linking groups comprise at least one non-cyclic ether group, and wherein the polysiloxane backbone is connected to the linking groups via a Si—C bond, and wherein polymer (A) is prepared by a process comprising i) Providing a polysiloxane backbone having at least two Si—H groups, ii) Providing a molecule having at least one methacryloyl group, one allyl group, and at least one non-cyclic ether group located between the allyl group and the at least one methacryloyl group, and iii) Forming a covalent bond between the polysiloxane backbone i) and the molecule ii) by reacting the Si—H groups with the allyl group via a hydrosilylation reaction.

Surface properties of radiation-cured coatings

The invention relates to a polymer having a) a polymer backbone and b) one or more polymeric side chains covalently linked to the polymer backbone, wherein the polymeric side chains comprise a polyether segment and a polysiloxane segment, said polysiloxane segment having a number average molecular weight in the range of 1050 to 6000, and said polyether segment being positioned between the polymer backbone and the polysiloxane segment.

Polymer having polyether and polysiloxane segments

The present invention relates to ureaurethanes of the following formula (I) in which at least one of the Ror Rradicals is a mono- or polyunsaturated, branched or unbranched alkenyl or alkynyl radical having 12 to 24 carbon atoms, n is an integer &#x2265;1, where the upper limit for n arises from the maximum number average molecular weight Mof the ureaurethanes of the general formula (I), which is 65 000 g/mol, and which is determined by means of gel permeation chromatography to DIN 55672-2 using a polymethyl methacrylate standard, Ris a xylylene radical or a hydrogenated xylylene radical and Ris a tolylene radical or various other radicals. The invention also relates to ureaurethane compositions comprising the ureaurethanes of the invention and to the preparation of both. The invention further relates to the use of the ureaurethanes or ureaurethane compositions as rheology control agent and antisettling agent. The invention further provides liquid formulations from the group consisting of coating compositions, polymer formulations, pigment pastes, sealant formulations, cosmetics, ceramic formulations, drilling fluids, adhesive formulations, potting compounds, construction material formulations, lubricants, spackling compounds, printing inks and other inks, comprising the ureaurethanes and ureaurethane compositions.

Ureaurethanes for rheology control

The invention relates to a rheology control agent containing i) 15-95% by weight of an amide compound (A), ii) 5-75% by weight of a urea compound (B), iii) 0-50% by weight of an ionogenic compound (C) and iv) 0-35% weight of an organic solvent (D).

Composition for rheology control

The invention relates to copolymers obtainable from polyether-polysiloxane containing macromonomers, and a process for preparation thereof. The invention further relates to the use of the copolymers as additives in compositions such as coating compositions and polymeric molding compounds as well as such compositions containing at least one inventive copolymer.

Copolymers containing polyether-polysiloxane macromonomer units, process of their preparation and their use in coating compositions and polymeric moulding compounds

The invention relates to a urea preparation containing (A) 5 to 75 wt. % of one or more urea components which have a molecular weight of at least 350 g/mol and contain at least one urea group; (B) 15 to 95 wt. %, preferably 30 to 80 wt. %, of one or more organic solvents from the group of N alkyl amides that have a molecular weight of 155 to 700 g/mol, are free of urea groups, and have the following formula (I), in which (a) Ris an x-containing hydrocarbon group, where x=1 to 24 carbon atoms, Ris a y-containing organic group, where y=1 to 12 carbon atoms, and Ris a z-containing organic group, where z=1 to 12 carbon atoms, or (b) R, R, and Rare defined as in (a) but Rand Rare connected to each other by a chemical bond and together form a ring with 4 to 10 ring atoms while incorporating the group C(&#x2550;O)N, and in the case of a ring with 4 or 5 ring atoms, Rcontains at least 6 carbon atoms and maximally 11 carbon atoms, or (c) R, R, and Rare defined as in (a) but Rand Rare connected to each other by a chemical bond and together form a ring with 4 to 10 ring atoms while incorporating the nitrogen atom of the general formula (I) with the proviso that for each of (a), (b), and (c), x+y+z&#x2267;8; (C) 0 to 35 wt. % of one or more organic solvents which differ from (B) and do not contain urea groups or ionic groups and which have maximally two heteroatoms selected from the group consisting of nitrogen and oxygen; and (D) 0 to 50 wt. % of a salt which differs from the urea component(s) (A), the solvent(s) (B), and the solvent(s) (C), wherein the sum of all of the stated weight percentages equals the total weight of the urea preparation. The invention further relates to the use of the urea preparation as a rheology additive for liquid compositions and to liquid media which contain the urea preparations.

Storage-stable urea preparations which are suitable as rheology control agents

The invention relates to polyureas having a weight-average molecular weight ranging from 5,000 to 70,000 g/mol, the preparation thereof, and the use thereof as rheology control agents. The invention further relates to rheology control agents containing polyureas and to the use thereof. The invention moreover relates to formulations containing polyureas.

Polyureas as rheology control agents

The invention relates to a coating preparation containing

Coating preparation containing urea components and amide components

The invention relates to a method for producing a solution comprising urea urethanes and acting as a thixotropic agent, wherein at least two structurally different monohydroxy compounds are converted by an excess of toluoylene diisocyanate, forming monoisocyanate adducts having diamines in an ionic fluid, forming urea urethanes. The invention further relates to the use of the solution for thixotroping coating agents and solutions of urea urethanes in ionic fluids.

Method for producing rheologically effective urea urethanes in organic salts

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Wesel, Germany

Marc Eberhardt