公开(公告)号：US20010021738A1

公开(公告)日：2001-09-13

申请号：US09793700

申请日：2001-02-27

Applicant: ASAHI GLASS COMPANY LTD.

Inventor： Genichirou Enna ,  Hiroki Fukuda ,  Yoshihiro Ohtsuka

IPC: C09J163/00

CPC classification number: C08G65/2639 ,  C04B24/005 ,  C04B24/32 ,  C04B2103/34 ,  C08G65/007

Abstract: The present invention is the following invention which provides a cement admixture which satisfies fluidity of fresh concrete and high strength of the hardened product of concrete simultaneously. Namely, the present invention resides in a cement admixture which is a mixture of fluorine-containing compounds represented by the formula (1): Rf-Q1-O-(A1-O)k-R1 nullnull(1) wherein Rf is a C1-22 polyfluoroaliphatic hydrocarbon group which may contain ethereal oxygen atoms or thioethereal sulfur atoms, Q1 is a C1-5 linear or branched alkylene group, k is an integer of from 1 to 100, A1 is a C2-4 linear alkylene group or a group having at least one hydrogen atom of said alkylene group substituted by a hydrocarbon group which may contain ethereal oxygen atoms, provided that when k is from 2 to 100, the plurality of A1 may be the same or different, and R1 is a hydrogen atom, a C1-18 hydrocarbon group or a C1-18 acyl group, said mixture having a ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) (i.e. Mw/Mn) of at least 1.1, and concrete which contains said cement admixture.

Abstract translation: 本发明提供了一种能够同时满足新拌混凝土的流动性和混凝土硬化物强度高的水泥混合物的发明。 即，本发明涉及一种水泥混合物，它是由式（1）表示的含氟化合物的混合物：其中，式（1）中，R 1〜 -O）k-R1（1）其中R f是可以含有醚性氧原子或硫代硫代硫原子的C1-22多氟脂族烃基，Q1是C1-5直链或支链亚烷基， k为1〜100的整数，A1为C2-4直链亚烷基或所述亚烷基的至少一个氢原子被可含有醚原子的烃基取代的基团，条件是当k为 2〜100，多个A1可以相同或不同，R1为氢原子，C1-18烃基或C1-18酰基，所述混合物的重均分子量（Mw） 至数均分子量（Mn）（即Mw / Mn）至少为1.1，以及含有所述水泥外加剂的混凝土。