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    Storage-stable urea preparations which are suitable as rheology control agents
    3.
    发明授权
    Storage-stable urea preparations which are suitable as rheology control agents 有权

    公开(公告)号：US09796860B2

    公开(公告)日：2017-10-24

    申请号：US15303620

    申请日：2015-04-15

    申请人： BYK-Chemie, GmbH

    发明人： Daniela Leutfeld ,  Marc Eberhardt ,  René Nagelsdiek ,  Sylvia Bühne ,  Jürgen Omeis ,  Berthold Jacobs

    IPC分类号： C09D7/00 ,  C09D5/04 ,  C08G18/28 ,  C08G18/32

    CPC分类号： C09D7/002 ,  C08G18/2825 ,  C08G18/283 ,  C08G18/324 ,  C09D5/04 ,  C09D7/43

    摘要： 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) R1 is an x-containing hydrocarbon group, where x=1 to 24 carbon atoms, R2 is a y-containing organic group, where y=1 to 12 carbon atoms, and R3 is a z-containing organic group, where z=1 to 12 carbon atoms, or (b) R1, R2, and R3 are defined as in (a) but R1 and R2 are connected to each other by a chemical bond and together form a ring with 4 to 10 ring atoms while incorporating the group C(═O)N, and in the case of a ring with 4 or 5 ring atoms, R3 contains at least 6 carbon atoms and maximally 11 carbon atoms, or (c) R1, R2, and R3 are defined as in (a) but R2 and R3 are 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≧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.

    Polymer suitable as a thickener
    6.
    发明授权
    Polymer suitable as a thickener 有权

    公开(公告)号：US11370912B2

    公开(公告)日：2022-06-28

    申请号：US16604733

    申请日：2018-04-12

    申请人： BYK-Chemie GmbH

    发明人： Dominika Bernert ,  René Nagelsdiek ,  Alan L. Steinmetz ,  Justin Adams ,  George M. Zody ,  Wesley A. Huff ,  Daniela Leutfeld

    IPC分类号： C08G18/10 ,  C08L75/08 ,  C09D7/43 ,  C08G18/22 ,  C08G18/48 ,  C08G18/71 ,  C08G18/76 ,  C09D5/14 ,  C08G18/28 ,  C08G18/75 ,  C08G18/80 ,  C08G18/78

    摘要： The invention relates to polymer comprising structural units according to formula (I), R1—X—(C═O)—NH—R2—NH—(C═O)—O—POA-R3—(O—POA-R4)n wherein R1 represents an organic group terminated by a hydrocarbyl group having 6 to 50 carbon atoms, X represents O or N—R5, wherein R5 represents a hydrogen atom or a hydrocarbyl group having 1 to 30 carbon atoms, R2 represents a hydrocarbyl group comprising an aromatic group and having 6 to 40 carbon atoms, POA represents a polyoxyalkylene group, R3 represents an organic group having 2 to 40 carbon atoms, n is an integer from 1 to 6, R4 is independently selected from —(C═O)—NH—R2—NH—(C═O)—NH—R1, —R6, wherein R6 represents a hydrogen atom or an aliphatic or aromatic group having 1 to 24 carbon atoms, and wherein the polymer has an average of at least 1.8 end groups R1 per molecule, a number average molecular weight in the range of 2000 to 100000 Daltons, and a polydispersity in the range of 1.0 to 5.0, wherein the quotient of the polydispersity divided by (n+1) is less than 1.0.