JPS6428255A - Cement admixture - Google Patents

Cement admixture

Info

Publication number
JPS6428255A
JPS6428255A JP18578087A JP18578087A JPS6428255A JP S6428255 A JPS6428255 A JP S6428255A JP 18578087 A JP18578087 A JP 18578087A JP 18578087 A JP18578087 A JP 18578087A JP S6428255 A JPS6428255 A JP S6428255A
Authority
JP
Japan
Prior art keywords
copolymer
acrylic acid
cement admixture
beta
alpha
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18578087A
Other languages
Japanese (ja)
Inventor
Takeo Owada
Kazuyuki Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP18578087A priority Critical patent/JPS6428255A/en
Publication of JPS6428255A publication Critical patent/JPS6428255A/en
Pending legal-status Critical Current

Links

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE:To obtain granular cement admixture having excellent blocking resistance and dispersibility, not causing cracking, consisting of a copolymer of a specific dicyclopentadiene derivative, (meth)acrylic acid alkyl ester and an alpha,beta-monoethylenic unsaturated monomer. CONSTITUTION:(A) 10-50pts.wt. dicyclopentadiene derivative (e.g. dicyclopentadienyl acrylate) shown by the formula (R is H or methyl; R' is bifunctional organic group; n is 0 or 1) is blended with (B) 30-70pts.wt. methacrylic acid 1-40C ester, (C) 5-20pts.wt. acrylic acid 6-9C alkyl ester and (D) an alpha,beta-monoethylenic unsaturated monomer (e.g. acrylic acid), copolymerizable with the components A, B and C, in an amount to give 100pts. wt. total amount. Then the blend is polymerized to give a copolymer and a granular cement admixture is obtained from the copolymer.
JP18578087A 1987-07-24 1987-07-24 Cement admixture Pending JPS6428255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18578087A JPS6428255A (en) 1987-07-24 1987-07-24 Cement admixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18578087A JPS6428255A (en) 1987-07-24 1987-07-24 Cement admixture

Publications (1)

Publication Number Publication Date
JPS6428255A true JPS6428255A (en) 1989-01-30

Family

ID=16176765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18578087A Pending JPS6428255A (en) 1987-07-24 1987-07-24 Cement admixture

Country Status (1)

Country Link
JP (1) JPS6428255A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012045A1 (en) * 1987-10-08 1990-10-18 Hitachi Chemical Company Ltd. Resin composition for cement
JP2007332027A (en) * 1995-01-31 2007-12-27 Basf Pozzolith Ltd Drying shrinkage-reducing cement dispersant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012045A1 (en) * 1987-10-08 1990-10-18 Hitachi Chemical Company Ltd. Resin composition for cement
JP2007332027A (en) * 1995-01-31 2007-12-27 Basf Pozzolith Ltd Drying shrinkage-reducing cement dispersant

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