Thus, to solve the subjects, the present invention provides a cement additive composed of a crosslinked polymer in which, between main chains having a water-soluble polymer structure of a molecular weight from 500 to 100,000, a bond having as a structural unit at least one group selected from divale
Thus, to solve the subjects, the present invention provides a cement additive composed of a crosslinked polymer in which, between main chains having a water-soluble polymer structure of a molecular weight from 500 to 100,000, a bond having as a structural unit at least one group selected from divalent groups as shown in the following formula (I) is formed. [ STR 1 ] [In the formula (I), R.sup.1 and R.sup.2 independently denote any one of the following. [ STR 2 ] However, R.sup.1 may not be required in a case of that R.sup.2 is the following. [ STR 3 ] Moreover, R and R' independently denote an alkyl group of carbon number of 1 to 5.]
대표청구항▼
[ We claim:] [1.] A hydraulic composition comprising a hydraulic material, water and a cement additive comprising a crosslinked polymer in which, between main chains having a water-soluble polymer structure of a weight average molecular weight from 500 to 100,000, a bond having as a structural unit
[ We claim:] [1.] A hydraulic composition comprising a hydraulic material, water and a cement additive comprising a crosslinked polymer in which, between main chains having a water-soluble polymer structure of a weight average molecular weight from 500 to 100,000, a bond having as a structural unit at least one divalent group having the following formula (I) is formed [ STR 28 ] wherein R.sup.1 and R.sup.2 independently are selected from the group consisting of: [ STR 29 ] with the proviso that R.sup.1 is not required if R.sup.2 is [ STR 30 ] and wherein R and R' independently denote an alkyl group of carbon number of 1 to 5,wherein said main chains comprise at least one member selected from the group consisting of [ STR 31 ] wherein m is 0 or an integral number of 1 to 50; n is 0 or 1;M is at least one member selected from the group consisting of a hydrogen atom, a monovalent, divalent or trivalent metal group, an ammonium group and an organic amine group;R.sup.1 and R.sup.6 independently denote an alkylene group of carbon number 2 to 4;R.sup.7 denotes an alkylene group of carbon number 1 to 5;with the proviso that when m is at least 2, a plurality of R.sup.5 O may be the same or different and, when a plurality of R.sup.5 O are different from one another, their arrangement may be regular or irregular;and wherein said crosslinked polymer is capable of forming a water-soluble polymer by cleavage of the divalent group in an alkaline medium.
Emmons ; William D. ; Stevens ; Travis E., Oligomeric amino-containing aminolysis products of polymethacrylates or polyacrylates, and epoxy resin coating composit.
Pettit ; Jr. Paul H. (Allison Park PA) Kaufman Marvin L. (Pittsburgh PA), Powder coating compositions based on mixtures of acid group-containing materials and beta-hydroxyalkylamides.
Yamaguchi Shigeru (Himeji JPX) Yokoi Tokihiro (Himeji JPX) Shioji Shorbu (Himeji JPX) Irie Yoshio (Himeji JPX) Fujiwara Teruaki (Nagaokakyo JPX), Process for producing and use of maleic acid (co-) polymer salt improved in biodegradability.
Seelmann-Eggebert Hans-Peter (Schriesheim DEX) Boeckh Dieter (Limburgerhof DEX) Hartmann Heinrich (Limburgerhof DEX) Trieselt Wolfgang (Ludwigshafen DEX) Baur Richard (Mutterstadt DEX), Water-soluble copolymers and their preparation.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.