Surface appearance-improving agent
AssigneeMBT Holding AG
InventorsShigemi Matsuo, Yasumasa Udagawa, Minoru Yaguchi
Life of this patent
Estimating the term…
Abstract
A material for improving the surface appearance of cementitious mouldings comprises a polyalkylene oxide compound which is selected from polypropylene oxide adducts of either polyethylene glycol or polyethylene oxide-ethylene diamine adduct, polypropylene oxide chains being attached to all terminal groups. The material may be added to a cementitious composition as an admixture or applied to the surface of a moulding which has not yet hardened.
Claims9
A method of improving the surface appearance of a moulding of a hardened cementitious material by treating the cementitious material prior to hardening with an admixture which comprises a polyalkylene oxide compound selected from the group consisting of:
- (a) a polypropylene oxide adduct of a polyethylene glycol;
- and
- (b) a polypropylene oxide adduct of an ethylene diamine polyethylene adduct said compound being polyethylene glycol or ethylene diamine polyethylene oxide adduct with polypropylene oxide chains attached to all terminal groups thereof wherein the admixture is applied to the surface of an already moulded, but not yet hardened, cementitious composition.
A surface appearance improvement admixture for cementitious compositions, comprising a polyalkylene oxide compound selected from the group consisting of:
- (a) a polypropylene oxide adduct of a polyethylene glycol:
- and
- (b) a polypropylene oxide adduct of an ethylene diamine polyethylene oxide adduct said compound being polyethylene glycol or ethylene diamine polyethylene oxide adduct with polypropylene oxide chains attached to all terminal groups thereof, and which further comprises;
- a water-reducing agent.
Dependencies are inferred from the claim text.