Building material additive

• US 4,230,502 A
• Filed: 01/09/1979
• Issued: 10/28/1980
• Est. Priority Date: 01/18/1978
• Status: Expired due to Term

• Current Assignee: Akzona Incorporated
• Original Assignee: Akzona Incorporated
• Inventors: Kaper, Louris, Lustig, Klaus P.
• Primary Examiner(s): Poer, James
• Application Number:
  US06/002,167
• Time in Patent Office: 658 Days
• Field of Search: 106/91, 106/93, 106/314
• US Class Current: 106/823
• CPC Class Codes: C04B 14/02 Granular materials , e.g. microballoons
• CPC Class Codes: C04B 14/022 Carbon
• CPC Class Codes: C04B 16/00 Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
• CPC Class Codes: C04B 16/04 Macromolecular compounds C04B16/02 takes precedence
• CPC Class Codes: C04B 20/1022 Non-macromolecular compounds
• CPC Class Codes: C04B 2103/0053 Water-soluble polymers
• CPC Class Codes: C04B 2103/40 Surface-active agents, dispersants
• CPC Class Codes: C04B 2111/27 Water resistance, i.e. waterproof or water-repellent materials
• CPC Class Codes: C04B 24/16 Sulfur-containing compounds
• CPC Class Codes: C04B 24/38 Polysaccharides or derivatives thereof C04B24/243 takes precedence
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 38/0051 characterised by the pore size, pore shape or kind of porosity

Abstract

A building material additive comprising an aqueous dispersion of a hydrophobic constituent which is completely wetted with a surfactant, and a water-soluble polymer is disclosed. The dispersion may also contain air void formers, retardants, plasticizers, accelerators, or the like, or mixtures thereof.

Claims

1. A process for the preparation of a building material additive comprising sequentially wetting a hydrophobic constituent with a surfactant, mixing the resultant product with an air void former and optionally with one or more members selected from the group consisting of retardants, plasticizers, and accelerators, and adding a water-soluble polymer and water to form a stable dispersion.

2. The process of claim 1 wherein the hydrophobic constituent is a solid having a particle size between 0.01 and 100 u.

3. The process of claim 2 wherein the hydrophobic constituent is a mineral which has been made hydrophobic.

4. The process of claim 2 wherein the hydrophobic constituent is carbon in the form of graphite or lamp black.

5. The process of claim 2 wherein the hydrophobic constituent is hydrophobic particles of plastic.

6. The process of claim 1, 2, 3, 4, or 5 wherein the surfactant is selected from the group consisting of sulfonated or sulfated alkyl, alkylaryl, and polyalkylene oxide compounds, and mixtures thereof.

7. The additive obtained by the process of claim 1, 2, 3, 4, 5, or 6.

8. The additive of claim 7 wherein the surfactant is selected from the group consisting of sulfonated or sulfated alkyl, alkylaryl, and polyalkylene oxide compounds, and mixtures thereof.