Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2011-04-12
2011-04-12
Buttner, David (Department: 1766)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C525S453000, C525S454000, C525S460000, C525S528000, C525S533000, C528S059000, C528S065000, C106S808000, C106S810000, C524S005000
Reexamination Certificate
active
07923489
ABSTRACT:
The invention describes amphiphilic polymer compounds which are prepared bya) reacting a di-, tri- or tetraglycidyl compound (A) with an optionally unsaturated reactive component (B) consisting of C8-C28-fatty acid, a C8-C28-alcohol or a secondary C8-C28-amine, and allowingb1) the reaction product from stage a) to react further first withb1α) an aliphatic or aromatic polyisocyanate compound (C)b1β) and optionally then with a polyalkylene oxide compound (D), andb1γ) reacting the reaction product from stage b1α) or optionally b1β) with a component (E) which is reactive towards isocyanates and has at least one OH, NH2, NH or SH group, orb2) allowing the reaction product from stage a) to react to completion with the reaction product of component (C) with component (E) and optionally (D) and (C), orb3) allowing the reaction product from stage a) to react to completion with the reaction product from component (C) and component (D) and optionally (C) and optionally the reaction product of component (C) and component (E) and optionally (C).The polymer compounds proposed according to the invention are exceptionally useful as agents for preventing or suppressing efflorescences on surfaces of hardended, hydraulically settable building materials or/and for hydrophobization of the corresponding hydraulically settable systems. Moreover, owing to the admixtures proposed according to the invention, the corresponding products absorb substantially less water, with the result that frost damage and rapid rusting of the steel reinforcement can be substantially reduced.
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Albrecht Gerhard
Bauer Mathias
Ingrisch Stefan
Thaler Stefen
Buttner David
Construction Research & Technology GmbH
Dollinger Mike
Fulbright & Jaworski L.L.P.
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