Method for reducing Brookfield Ratio.

Processes for making gear lubricants with low Brookfield Ratios.

Once incorporated into the coating slip, this adhesive makes it possible to regulate the Brookfield viscosity, while at the same time providing a good compromise between water retention and rheological behaviour at high shear gradient.

There are disclosed cationic crosslinked waxy starch products having a Brookfield viscosity of about 700 cps to about 2500 cps and a method for preparing the starch products.

The resulting coating slips feature an increase in water retention and a reduction in Brookfield viscosity as compared with the same slips containing a prior-art water-retaining thickener.

The polyvinyl pyrrolidone thickening agent is characterized by an aqueous gel volume of about 15 to 150 ml/g and a Brookfield viscosity of at least 10,000 cps for a 5% aqueous solution at 25° C.

Gear lubricant having a low Brookfield Ratio comprising: an FT derived base oil; a pour point depressing base oil blending compoennt; and an EP additive.

The polyvinyl pyrrolidone thickening agent is characterized by an aqueous gel volume of about 15 to 150 ml/g and a Brookfield viscosity of at least 10,000 cps for a 5% aqueous solution at 25° C.

The invention also relates to the substantially pure vinyl lactam-acrylamide copolymer having a Brookfield viscosity of at least 75,000 cps. and a residual monomer content below 0.5 wt. %, for example less than 1,000 ppm.

The invention provides methods for coating potato strips using low levels of pre-gelled modified starches characterized by a Brookfield viscosity of from 15 to 100 cp when measured on a 6% solids basis.