Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2004-09-01
2008-03-18
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S004000
Reexamination Certificate
active
07345103
ABSTRACT:
It is an object of the present invention to provide a hydraulic composition which enables both of high fluidity and material separation reducing and can eliminate the delay of setting. The present invention is directed to a hydraulic composition comprising cement (A), a copolymer (B), a high-performance water reducing agent (C) and a powdery cement admixture (D), wherein the copolymer (B) comprises a repeating unit (I) represented by the following formula (1);(wherein R1represents a hydrogen atom or a methyl group. n is an integer of 2 to 4.), and a repeating unit (II) represented by the following general formula (2);(wherein R2, R3and R4are same or different and each represents a hydrogen atom, a methyl group or a (CH2)pCOOM2group, and may form a structure of an anhydride when the total number of COOM1groups and COOM2groups are 2. M1and M2are same or different and each represents a hydrogen atom, a monovalent metal, a divalent metal, an ammonium group or an organic ammonium group, and p is an integer of 0 to 2).
REFERENCES:
patent: 3140269 (1964-07-01), Wahl et al.
patent: 4602685 (1986-07-01), McKenzie et al.
patent: 4674574 (1987-06-01), Savoly et al.
patent: 6296698 (2001-10-01), Naramoto et al.
patent: 6995105 (2006-02-01), Wache et al.
patent: 06-263506 (1994-09-01), None
patent: 2001-048619 (2001-02-01), None
Hirata et al, Polycarboxylic Acid Based Cement Dispersant “Aqualoc®”, New Horizons in Resource Handling and Geo-Engineering, MMIJ/AusIMM Joint Symposium 1994, UBE Oct. 1-5, 1994, pp. 89-97.
Nakata Yoshitomo
Tomita Takashi
Wakao Norihiro
Connolly Bove Lodge and Hutz
Nippon Shokubai Co. , Ltd.
Szekely Peter
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