Abstract:
The present invention relates to the use of a mono-azide compound for cross-linking polymer strands, wherein said mono-azide compound has a structure of the formula (I): (I), wherein Q1 and Q2 are each independently from another a halogen and wherein R1, R2 and R3 are each independently from another any not comprising an azido moiety. Further, the present invention relates to a method for cross-linking polymer stands and to a cross-linked polymer composition obtainable from said method and an electronic device comprising such composition.
Abstract:
Polymers comprising at least one unit of formula (1) wherein n is 0 or 1, m and p are independently from each other 0,1,2,3,4,5 or 6, provided that the sum of n, m and p is at least 2, and n and p are not 0 at the same time, Ar 1 and Ar 2 are independently from each other C 6-14-arylene or C 6-14-aryl,which may be substituted with 1 to 4 substituents independently selected from the group consisting of C 1-30-alkyl, C 2-30-alkenyl, C 2-30-alkynyl, C 5-8-cycloalkyl, C 6-14-aryl and 5 to 14 membered heteroaryl, and X 1,X 2 and X 3 are independently from each other and at each occurrence O or S, compositions comprising these polymers, and electronic devices comprising a layer formed from the compositions. Preferably, the electronic device is an organic field effect transistor and the layer is the dielectric layer.
Abstract:
The invention relates to a copolymer exhibiting both antimicrobial and anti-adhesive properties as well as to a hydrogel. Said hydrogel is obtained from the inventive copolymer and a substrate. Another part of the invention is a process for making the hydrogel, as well as different uses of the inventive copolymer as well as of the hydrogel.
Abstract:
The invention relates to a novel method for the enzymatic synthesis of poly(oxyalkylene)acrylamide as well as the use thereof for synthesizing polymers.
Abstract:
The invention relates to the use of comb polymers which comprise a carbon backbone comprising polyether groups of formula A *-U-(C(O))k-X-(Alk-O)n-W A wherein * is the binding point on the carbon backbone of the comb polymer, U represents a chemical binding or an alkylene group having 1 - 8 C-atoms, X represents oxygen or a group NR, k is 0 or 1, n represents a whole number, wherein the average, in relation to the comb polymer, lies in the region of between 5 - 300, Alk represents C2-C4-alkylene, Alk in the group (Alk-O)n can be identical or different, W represents hydrogen, a C1-C6-alkyl- or a aryl radical or the group Y-Z, Y represents a linear or cross-linked alkylene group having 2 - 8 C-atoms and which can support a phenyl ring, Z represents a 5 10-membered nitrogen heterocycle which is linked by nitrogen, and the ring members, in addition to nitrogen atoms and carbon atoms, are 1, 2 or 3 additional heteroatoms which are selected from oxygen, nitrogen and sulphur, whereby the nitrogen ring members can comprises a R' group, and 1 or 2 carbon ring members can be a carbonyl group, R represents hydrogen, C1-C4-alkyl or benzyl, and R' represents hydrogen, C1-C4-alkyl or benzyl. The invention also relates to functional B groups which are in the form of anionic groups when pH >12, and to the salts thereof as grinding agents in preparations containing cement.
Abstract:
A method for producing radically polymerizable carboxylic acid esters by reacting ethylenically unsaturated carboxylic acids, carboxylic acid anhydrides, or carboxylic acid halogenides (collectively referred to as carboxylic acid components) with a hydroxyl compound comprising at least 60 weight-% C2- to C4-alkoxy groups (referred to in short as a polyalkoxy compound), characterized in that the reaction occurs in the presence of a polymerization inhibitor and a reducing agent.
Abstract:
Disclosed is a method for producing leather, which is characterized in that pelts, pickled pelts, or semifinished products are treated with at least one polymer that can be obtained by copolymerizing (A) at least one ethylenically unsaturated monocarboxylic acid or dicarboxylic acid comprising 3 to 8 C atoms or at least one anhydride derived from a monocarboxylic acid or dicarboxylic acid comprising 3 to 8 C atoms, (B) at least one vinyl aromatic compound, (C) at least one alkoxylated unsaturated ether of general formula (I), (D) optionally, additional monoethylenically unsaturated monomers. The variables in formula (I) are defined as follows: R , R , R are identical or different and are selected among C1-C4 alkyl or hydrogen; R , R are identical or different and are selected among C1-C4 alkyl or hydrogen; R is selected among hydrogen, SO3M, PO3M2, C1-C30 alkyl, -CO-H (formyl), CO-C1-C20 alkyl, -CO-C6-C14 aryl; M represents alkali metal, NH4 , or CH3; n represents an integer between 3 and 100; and y represents an integer between 0 and 10.
Abstract:
The invention relates to aqueous dispersions of water-soluble polymers of N-vinylcarboxamides which are substantially salt-free and contain anionic polymeric stabilizers having a comblike molecular structure, to processes for preparing the dispersions in the presence of anionic polymeric stabilizers having a comblike molecular structure, and to the use of the dispersions as retention aids or fixing aids in papermaking.