High productivity joint compounds

Details High productivity joint compounds High productivity joint compounds

1990-12-12

1992-04-07

Niebling, John

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106169, 524 43, C08L 108, C09J10102

Patent

active

051024624

ABSTRACT:
Water demand in an aqueous joint compound composition is increased by incorporating a blend of water soluble polymer (WSP) and crosslinked polyacrylic acid water demand polymer (WDP) with a WSP to WDP blend ratio of 9:1 to 25:1. A preferred WSP is hydrophobically modified hydroxyethylcellulose. This blend may also be used for aqueous tile adhesives.
In the joint compound the thickener, comprising water-soluble cellulose ether(s) and water-insoluble but swellable polyacrylic acid or salt thereof, the acrylic component gives increased joint compound viscosity without the need to decrease water level or increase thickener level.

REFERENCES:
patent: 4594108 (1986-06-01), Greminger, Jr. et al.
patent: 4720303 (1988-01-01), Soldatos
patent: 4846889 (1989-07-01), Meyer
patent: 4994112 (1991-02-01), Majewicz et al.

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