Plasticizer dedusting agents for joint compounds

A ready-mixed, setting-type joint compound comprising joint compound components and water, wherein the joint compound components comprise calcium sulfate hemihydrate, binder, polymer thickener, plasticizer dedusting agent, additive, set retarder and filler,

• having an absence of polyvinyl acetate,
• having an absence of vinyl acetate,
• having an absence of set retarder comprising a polymer composition including acrylic acid and acrylamide monomer units,
• having an absence of wax emulsions,
• having an absence of polymer coated wax core particulates;
• having an absence of wax, having an absence of paraffins;
• having an absence of polyacrylamide;
• having an absence of glycol;
• and
• having an absence of copolymer of acrylamide and acrylic acid,
• wherein the ready-mixed, setting-type joint compound comprises:
• the calcium sulfate hemihydrate at 60 wt % to 85 wt % of the ready-mixed, setting-type joint compound on a dry (water free) basis;
• the filler at 14.6 wt % to 28 wt % of the ready-mixed, setting-type joint compound on a dry basis;
• total calcium sulfate hemihydrate and filler is 88 to 99.6 wt % of the setting-type joint compound on a dry basis;
• the set retarder at 0.1 wt % to 1 wt % of the ready-mixed, setting-type joint compound on a dry basis;
• the binder at up to 4 wt % of the ready-mixed, setting-type joint compound on a dry basis;
• the polymer thickener at 0.1 wt % to 1 wt % of the ready-mixed, setting-type joint compound on a dry basis;
• the plasticizer dedusting agent at 0.1 wt % to 1 wt % of the ready-mixed, setting-type joint compound on a dry basis, wherein the plasticizer dedusting agent is a mixture of diethylene glycol dibenzoate, propylene glycol dibenzoate, and dipropylene glycol dibenzoate;
• the additive at 0.1 wt % to 5 wt % of the ready-mixed, setting-type joint compound on a dry basis;
• and
• the water at the ratio of water to joint compound components of 1:3 to 1:1,
• wherein the mixture of diethylene glycol dibenzoate, propylene glycol dibenzoate, and dipropylene glycol dibenzoate is the sole dedusting agent.

A joint compound, consisting of, on a dry basis,

• calcium sulfate hemihydrate and/or at least one filler, wherein a total amount of the calcium sulfate hemihydrate and/or the at least one filler is at least 50 weight percent (wt %),
• a binder at up to 15 wt % of the joint compound on the dry basis;
• a polymer thickener at up to 3 wt % of the joint compound on the dry basis;
• a plasticizer dedusting agent at 0.1 to 3 wt % of the joint compound on the dry (water free) basis, wherein the plasticizer dedusting agent is selected from at least one member of the group consisting of one or more of diethylene glycol dibenzoate, propylene glycol dibenzoate, and dipropylene glycol dibenzoate;
• an additive up to 5 wt % of the drying-type joint compound on the dry basis, wherein the additive is selected from the group consisting of preservatives, fungicides, bactericides, defoaming agents, glycols, humectants, and mixtures thereof;
• optionally at least one set retarder selected from the group consisting of zinc hexametaphosphate, potassium tripolyphosphate, tetra sodium pyrophosphate, sodium tripolyphosphate, monoammonium phosphate, and monobasic potassium phosphate, polyacrylic acid and/or a salt of polyacrylic acid, wherein there is an absence of set retarder that is a polymer composition including acrylic acid and acrylamide monomer units;
• and
• optionally at least one set accelerator selected from the group consisting of aluminum sulfate, potassium sulfate, calcium sulfate, ferric sulfate, ferric chloride, and mixtures thereof;
• and
• having an absence of polyvinyl acetate,
• having an absence of vinyl acetate,
• having an absence of wax emulsions,
• having an absence of polymer coated wax core particulates;
• having an absence of wax, having an absence of paraffins;
• having an absence of polyacrylamide;
• having an absence of glycol;
• and
• having an absence of copolymer of acrylamide and acrylic acid,
• wherein a mixture of diethylene glycol dibenzoate, propylene glycol dibenzoate, and dipropylene glycol dibenzoate is the sole dedusting agent.