LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS
    235.
    发明公开
    LOW-TO-MID-RANGE WATER REDUCTION USING POLYCARBOXYLATE COMB POLYMERS 审中-公开
    使用聚羧酸酯梳形聚合物的低至中等程度的水减少

    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

    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。

    CEMENT GRINDING ADDITIVE FOR ENABLING PVC EQUIPMENT USE
    239.
    发明公开
    CEMENT GRINDING ADDITIVE FOR ENABLING PVC EQUIPMENT USE 审中-公开
    ZEMENTSCHLEIFADDITIV ZURERMÖGLICHUNGEINER PVC-AUSRÜSTUNGS-VERWENDUNG

    公开(公告)号:EP3046885A1

    公开(公告)日:2016-07-27

    申请号:EP14845087.7

    申请日:2014-09-16

    Abstract: The present invention provides cement grinding additive compositions and methods which allow a PVC-safe, powerful, and robust defoaming agent to be uniformly dispersed throughout a broad concentration range while retaining storage stability even in cases wherein the defoaming agent is highly diluted. Exemplary cement grinding additive compositions comprise at least one amine cement grinding additive; an air detrainer selected from the group consisting of (i) ethoxylated, propoxylated fatty alcohol or alkylphenol, (ii) polyalkoxylated polyalkylene polyamine, or (iii) a mixture thereof.

    Abstract translation: 本发明提供了水泥研磨添加剂组合物和方法,即使在消泡剂高度稀释的情况下,也可以使聚氯乙烯安全,功能强大且坚固的消泡剂均匀分散在宽浓度范围内,同时保持储存稳定性。 示例性的水泥研磨添加剂组合物包含至少一种胺水泥研磨添加剂; 选自(i)乙氧基化,丙氧基化脂肪醇或烷基酚,(ii)聚烷氧基化聚亚烷基多胺,或(iii)其混合物的空气除垢剂。

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