公开(公告)号：EP3201154A1

公开(公告)日：2017-08-09

申请号：EP15846443.8

申请日：2015-09-28

Applicant: GCP Applied Technologies Inc.

Inventor： KUO, Lawrence, L. ,  GOC-MACIEJEWSKA, Izabela ,  JASKULA, Natalia

IPC: C04B24/26

CPC classification number: C04B24/165 ,  C04B24/2647 ,  C04B24/2658 ,  C04B28/02 ,  C04B2103/006 ,  C04B2103/302 ,  C04B24/122 ,  C04B2103/304 ,  C04B2103/50

Abstract: 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.

Abstract translation: 当聚羧酸盐聚合物由特别小尺寸的，特别是小尺寸的聚羧酸盐聚合物形成时，与传统的“超塑化剂”聚羧酸盐聚合物相比，用于塑化具有相对较高的水/水泥比（至少0.40或更高）的水泥混合物的方法在剂量效率方面令人惊讶地得到改善 （A）由结构式（R1）（R3）C = C（R2）（（CH2）m（CO）nO（CH2）o（AO）pR4表示的聚氧化烯单体，其中（AO）p代表 线性环氧乙烷基团，p为5-23，更优选5-15; （R 5）（R 7）C = C（R 6）（C（O）OM）表示的（B）不饱和羧酸，其中M表示碱金属，组分A与组分B的比例为20:80至50:50 ; （C）由（R8）（R9）C = C（R10）（CX）表示的亲水性单体，其中R8，R9和R10各自代表氢或甲基，并且X代表C（O）NH2， C（O）NHR11，C（O）NR12R13，SO3H，C6H4SO3H或C（O）NHC（CH3）2CH2SO3H，或其混合物，其中R11，R12和R13各自代表C1至C5烷基。