초록 ▼

A mixture of a water swellable clay mineral and an alkali soluble and thickenable (meth)acrylic acid emulsion copolymer provides a highly effective thickening and gelling agent for aqueous systems at low concentrations. The gels are self-supporting and have high strength and thus are particularly us

A mixture of a water swellable clay mineral and an alkali soluble and thickenable (meth)acrylic acid emulsion copolymer provides a highly effective thickening and gelling agent for aqueous systems at low concentrations. The gels are self-supporting and have high strength and thus are particularly useful as air fresheners and other applications where firm gels are desirable. A synergistic thickening effect between the (meth)acrylic acid copolymer and the clay mineral is observed.

대표청구항 ▼

As a thickening agent for aqueous systems, a composition comprising a mixture of: (A) a water swellable clay mineral, and (B) a water insoluble emulsion polymer, an aqueous dispersion of which will thicken upon addition of a neutralization agent, of (1) 20-50 wt. % of (meth)acrylic acid, (2) 0.5-25

As a thickening agent for aqueous systems, a composition comprising a mixture of: (A) a water swellable clay mineral, and (B) a water insoluble emulsion polymer, an aqueous dispersion of which will thicken upon addition of a neutralization agent, of (1) 20-50 wt. % of (meth)acrylic acid, (2) 0.5-25 wt. % of at least one monomer of the formula (I): H2C〓C(R)－C(O)－O－(CH2CH2O)n－Ro wherein R is H or CH3, n is at least 2 and has an average value up to 60 or more, and Ro is a group having at least 8 carbon atoms selected from alkyl, alkaryl and polycyclic hydrocarbyl, (3) at least 30 wt. % of an alkyl (meth)acrylate wherein the alkyl group has 1 to 4 carbon atoms, and (4) zero to 1.0 wt. % of a polyethylenically unsaturated monomer; the proportions of (A) and (B) being effective, upon addition of a neutralizing agent for (B), for thickening an aqueous dispersion formed therewith.