Associative thickeners for aqueous systems

Details Associative thickeners for aqueous systems Associative thickeners for aqueous systems

2004-08-20

2009-02-24

Oh, Taylor Victor (Department: 1625)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S392000, C558S243000, C558S244000, C558S245000, C560S302000

Reexamination Certificate

active

07495050

ABSTRACT:
Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.

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