Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-To-Mid-Range Water Reduction Using Polycarboxylate Comb Polymers
Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the polycarboxylate polymer is formed from particularly small-sized, specifically selected monomer constituents: (A) polyoxyalkylene monomer represented by the structural formula (R1)(R3)C═C(R2)((CH2)m(CO)nO(CH2)o(AO)pR4) wherein (AO)p represents linear ethylene oxide groups and p is 5-23 and more preferably 5-15; (B) unsaturated carboxylic acid represented by (R5)(R7)C═C(R6)(C(O)OM) wherein M represents an alkali metal, the ratio of component A to component B being 20:80 to 50:50; and, optionally, (C) a hydrophilic monomer represented by (R8)(R9)C═C(R10)(CX) wherein R8, R9, and R10 each represent hydrogen or methyl group, and X represents C(O)NH2, C(O)NHR11, C(O)NR12R13, SO3H, C6H4SO3H, or C(O)NHC(CH3)2CH2SO3H, or mixture thereof, wherein R11, R12, and R13 each represent a C1 to C5 alkyl group.
Low-To-Mid-Range Water Reduction Using Polycarboxylate Comb Polymers
Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the polycarboxylate polymer is formed from particularly small-sized, specifically selected monomer constituents: (A) polyoxyalkylene monomer represented by the structural formula (R1)(R3)C═C(R2)((CH2)m(CO)nO(CH2)o(AO)pR4) wherein (AO)p represents linear ethylene oxide groups and p is 5-23 and more preferably 5-15; (B) unsaturated carboxylic acid represented by (R5)(R7)C═C(R6)(C(O)OM) wherein M represents an alkali metal, the ratio of component A to component B being 20:80 to 50:50; and, optionally, (C) a hydrophilic monomer represented by (R8)(R9)C═C(R10)(CX) wherein R8, R9, and R10 each represent hydrogen or methyl group, and X represents C(O)NH2, C(O)NHR11, C(O)NR12R13, SO3H, C6H4SO3H, or C(O)NHC(CH3)2CH2SO3H, or mixture thereof, wherein R11, R12, and R13 each represent a C1 to C5 alkyl group.
Low-To-Mid-Range Water Reduction Using Polycarboxylate Comb Polymers
KUO LAWRENCE L (Autor:in) / GOC-MACIEJEWSKA IZABELA (Autor:in) / JASKULA NATALIA (Autor:in)
31.03.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS
| Europäisches Patentamt | 2017
LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS
| Europäisches Patentamt | 2024
LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS
| Europäisches Patentamt | 2016
LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS
Europäisches Patentamt | 2023
Low-to-mid-range water reduction using polycarboxylate comb polymers
| Europäisches Patentamt | 2019