Plasticizer dedusting agents for joint compounds

US12006262B2 · kind B2 · utility

Assignee

• UNITED STATES GYPSUM COMPANY · US

Inventors

• Alexander J. Donovan · Lake Forest, US
• Tyler Kincaid · Chicago, US
• David D. Pelot · Chicago, US
• Richard B. Stevens · Crystal Lake, US
• Robert H. Negri · Lake Villa, US
• Naveen Punati · Lake Zurich, US

Key dates

• Filing date: Mar 9, 2020
• Grant date: Jun 11, 2024
• Expiry date: Nov 13, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00689
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A joint compound including calcium sulfate hemihydrate and/or at least one filler, wherein a total amount of the at least one filler and/or calcium sulfate hemihydrate is at least about 50 wt % of the joint compound on a dry (water-free) basis, preferably the filler comprises calcium carbonate, calcium sulfate dihydrate, or calcium sulfate anhydrite, or a mixture thereof; binder at up to about 15 wt % of the joint compound on a dry basis; polymer thickener at up to about 3 wt % of the joint compound on a dry basis; plasticizer dedusting agent at about 0.01 to about 3 wt % of the joint compound on a dry (water free) basis; and an additive up to about 10 wt % of the joint compound on a dry basis.