| Patent Number |
Title Of Patent |
Date Issued |
| 7375163 |
Cement admixture for improved slump life |
May 20, 2008 |
| Described are polymers and cement admixtures which reduce drop in fluidity with time. Said admixture comprises at least one polymer of the present invention and at least one polymer A. The polymer of the present invention comprises side chains of which at least 10 weight-% can be cle |
| 7026402 |
Cement admixture for improved slump life |
April 11, 2006 |
| Described are polymers and cement admixtures which reduce drop in fluidity with time. Said admixture comprises at least one polymer of the present invention and at least one polymer A. The polymer of the present invention comprises side chains of which at least 10 weight-% can be cle |
| 6855752 |
Polymers for cement dispersing admixtures |
February 15, 2005 |
| Polymers for cement dispersing admixtures, which show different performing properties in concrete are described. All polymers are based on a composition of reactants, namelya) a poly(acrylic acid), b) a polyalkyleneglycol-monoalkylether and, optionally c) a .alpha.-amino-polyalkylene-gly |
| 6712995 |
Method for rehabilitative and/or protective corrosion-inhibition of reinforcing steel embedded i |
March 30, 2004 |
| The present invention provides methods and compositions for the reduction of the corrosion rate of already corroding steel reinforcements embedded in a hardened concrete structure as well as for the protective corrosion inhibition of uncorroded steel reinforcements embedded in a hardened |
| 6712900 |
Method for the reduction of the degree of shrinkage of hydraulic binders |
March 30, 2004 |
| On object of the present invention is an agent for the reduction of the degree of shrinkage in hydraulic binders, whereby said comprises an alkanolamine of formula R--NH--(AOH) wherein R is hydrogen or a linear or branched aliphatic or cyclic C.sub.1 -C.sub.6 -alkyl group, and A is a |
| 6548589 |
Cement dispersing polymers for high flow, high strength and selfcompacting concrete |
April 15, 2003 |
| A multipurpose cement dispersing, shrinkage compensating and anticorrosive polymer and an admixture comprising said polymer, which improve the workability and the early strength development of fresh concrete, are described. Said polymer is an ester- and amid group-modified acrylic po |
| 6540826 |
Sulfate-free and alkali-free setting and hardening accelerator |
April 1, 2003 |
| Described are setting and hardening accelerators for hydraulic binders and said binder comprising compositions that are free of sulfates, alkali metals and chlorides. The setting and hardening accelerators comprise, as main component, water-soluble fluoride comprising aluminum salts and |
| 6537367 |
Alkali-free setting and hardening accelerator |
March 25, 2003 |
| Described are setting and hardening accelerators for hydraulic binders and said binder comprising compositions that are free of alkali metals and chlorides. The setting and hardening accelerators comprise, as main component, water-soluble fluoride comprising aluminum salts and water- |
| 6514327 |
Stabilized setting and hardening accelerator of low viscosity |
February 4, 2003 |
| Described are liquid setting and hardening accelerators for hydraulic binders and such binder comprising mixtures that preferably are alkali-free and chloride-free and that do not comprise any basic features. The setting accelerators comprise as components aluminum salts, complexing |
| 6402990 |
Method for rehabilitative and/or protective corrosion-inhibition of reinforcing steel embedded i |
June 11, 2002 |
| The present invention provides methods and compositions for the reduction of the corrosion rate of already corroding steel reinforcements embedded in a hardened concrete structure as well as for the protective corrosion inhibition of uncorroded steel reinforcements embedded in a hardened |
| 6398866 |
Method for the reduction of the degree of shrinkage of hydraulic binders |
June 4, 2002 |
| One object of the present invention is an agent for the reduction of the degree of shrinkage in hydraulic binders, whereby said agent comprises an alkanolamine of formula R--NH--(AOH) wherein R is hydrogen or a linear or branched aliphatic or cyclic C.sub.1 -C.sub.6 -alkyl group, and A i |
| 6387176 |
Multipurpose cement dispersing polymers for high flow and high strength concrete |
May 14, 2002 |
| A new category of multi-purpose polymers is presented, the polymers being capable to serve as a cement dispersing agent and which at the same time are set-accelerating and do have shrinkage reducing- and anticorrosive properties to steel. The polymers are ester and amide group-modified |
| 6149725 |
Injection cement comprising corrosion inhibitors |
November 21, 2000 |
| An injection cement on the basis of micro cement is described that comprises corrosion inhibitors, preferably salt-like products of the neutralisation of amines with acids. Said cement is in particular suitable for the restoration and improvement of the corrosion resistance of buildi |
| 5919300 |
Dispersing agent for high-flow or self-compacting concrete |
July 6, 1999 |
| Cement dispersing agents for self-compacting concrete of high flowability, comprising a water-soluble N-vinyl copolymer, prepared by copolymerizing (a) an N-vinyl-lactame or -amide with (b) a polyethylene glycol ester of maleic acid containing 6 to 240 moles of oxyethylene groups per mol |
| 5916483 |
Additive and a process for inhibiting the corrosion of metals in construction materials and cons |
June 29, 1999 |
| Additives are disclosed which inhibit the corrosion of metals in construction materials which contain an inorganic binder. The inventive corrosion inhibitors contain a reaction product of amines and acids or they consist of such a reaction product. Said saltlike corrosion inhibitors |
| 5560774 |
Process for accelerating the setting and hardening of material which contains a hydraulic binder |
October 1, 1996 |
| In a process for accelerating the setting and hardening of a material which contains a hydraulic binder or which consists of a hydraulic binder there is used a setting accelerator mixture which is free of alkali metals and free of chlorides. Said setting accelerating mixture contains at |
| 5453123 |
Thixotroping and set-accelerating additive for mixtures containing a hydraulic binder, process u |
September 26, 1995 |
| There is described a thixotroping and set accelerating additive for mixtures which contain as component a hydraulic binder and/or a latent-hydraulic binder and furthermore water and optionally also an aggregate and/or other additives. The inventive thixotroping and set accelerating a |
| 5389144 |
Admixture for spray concrete and mortar and a method for the manufacture of spray concrete and m |
February 14, 1995 |
| Admixtures for spray concrete or mortar which contain silicic acid sol or consist of it, are used for the processing of spray concrete or mortar according to the dry or the wet method. Said admixtures lead to a clear reduction of dust formation and of rebound. With the processing of spra |
| 5108510 |
Highly reactive hydraulic binder for the preparation of building, construction and raw materials |
April 28, 1992 |
| Disclosed is a highly reactive hydraulic binder for the preparation of building, construction and raw materials which contains burned oil shale and at least one compound, selected from the group, consisting ofan amorphous oxide of 3- and/or 4-valent cations,an amorphous hydroxide of 3- and/o |
| 5100984 |
Water-soluble copolymers, a process for their preparation and their use as fluidizers in suspens |
March 31, 1992 |
| Novel water-soluble linear copolymers of N-vinylamides with monomeric addition products of amines, amino acids, amino groups containing aromatic sulfonic acids, amino alcohols of maleic anhydride as well as maleic esters of polyoxyalkyleneglycols or their monoethers. There is also de |
| 4686252 |
Process for preparing a building and/or construction material, a polymer modified aqueous disper |
August 11, 1987 |
| For the preparation of a building and/or construction material a polymer modified, aqueous dispersion, containing amorphous silicon dioxide and at least one polymer, is mixed and reacted with at least one inorganic binder, and occasionally with at least one aggregate, and hardens thereby |
| 4501839 |
Method of using highly concentrated aqueous solutions of low viscosity of melamine/aldehyde resi |
February 26, 1985 |
| Highly concentrated aqueous solutions of low viscosity of melamine/aldehyde resins are obtained by reacting to a precondensate in a first step melamine and an aldehyde in an alkaline medium and in the presence of water together with at least one compound (I), selected from the group, |
| 4430469 |
Process for preparing highly concentrated aqueous solutions of low viscosity of melamine/aldehyd |
February 7, 1984 |
| Highly concentrated aqueous solutions of low viscosity of melamine/aldehyde resins are obtained by reacting to a precondensate in a first step melamine and an aldehyde in an alkaline medium and in the presence of water together with at least one compound (I), selected from the group, |
