초록 ▼

The coefficient of friction of surfaces of articles, wherein the surface comprises a hydrophilic polyurethane polymer, is reduced by treating the surface with a mixture of concentrated sulfuric acid and a low molecular weight organic polyhydroxy compound, and removing excess treating mixture. Typica

The coefficient of friction of surfaces of articles, wherein the surface comprises a hydrophilic polyurethane polymer, is reduced by treating the surface with a mixture of concentrated sulfuric acid and a low molecular weight organic polyhydroxy compound, and removing excess treating mixture. Typical low friction articles produced thereby are boat hulls having drag resistant coatings, conduits having low friction linings, and cannula or body implants having slippery surfaces.

대표청구항 ▼

As an article of manufacture, a shaped substrate having a low friction surface produced by treating, for an effective period of time, a corresponding precursor surface of a hydrophilic polyurethane polymer on the said substrate with a mixture of concentrated sulfuric acid and a low molecular weight

As an article of manufacture, a shaped substrate having a low friction surface produced by treating, for an effective period of time, a corresponding precursor surface of a hydrophilic polyurethane polymer on the said substrate with a mixture of concentrated sulfuric acid and a low molecular weight polyhydroxy compound, and removing excess mixture.