POLYURETHANE THICKENER

• Main Authors: WENDEL VOLKER, TUERK HOLGER
• Format: Patent
• Language: English; Korean
• Published: 04.03.2011
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Aqueous dispersible polyurethane (I) with linear backbone from alternating hydrophilic and hydrophobic segments, is new, where: both terminal segments (T) of (I) is hydrophobic; at each segment of (T), a hydrophilic segment (S1) is directly connected; at each segment of (S1), at least a hydrophobic segment (D) is directly connected on at least a side; (I) contains at least a hydrophobic segment (P1); the hydrophobic segment (P1) is separated into two segments, when (I) contains many (P1); and (I) exhibits at least three hydrophilic segments. Aqueous dispersible polyurethane (I) with linear backbone of alternating hydrophilic and hydrophobic segments, is new, where: both terminal segments (T) of (I) is hydrophobic; at each segment of (T), a hydrophilic segment (S1) is directly connected; at each segment of (S1), at least a hydrophobic segment (D) is directly connected on at least a side; (I) contains at least a hydrophobic segment (P1); the hydrophobic segment (P1) is separated into two segments, when (I) contains many (P1); (I) exhibits at least three hydrophilic segments; the ratio of the molecular weights of each hydrophilic segment (S1) to the molecular weight of each hydrophilic segments (P1) is 1:1.4-1:140; the at least two hydrophobic segments (D) is aliphatic diisocyanate residue; and at least one of the hydrophilic segment (P1) is a polyether residue with a number average molecular weight of at least 1500 g/mole, or a mixture of different polyurethanes. Independent claims are included for: (1) the preparation of (I); and (2) a composition comprising (I) and water.