US 4,289,825 AGranted

Elastomeric polyurethanes coated with a vinyl chloride polymer powder

AssigneeThe B. F. Goodrich Company

InventorsEdmond G. Kolycheck, Richard M. Herman

Life of this patent

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Elastomeric polyurethanes in granular form are coated with a vinyl chloride polymer powder.

Dependent claims

A composition comprising elastomeric polyurethanes in granular form coated with less than 2 weight percent of a vinyl chloride polymer powder.

Dependencies are inferred from the claim text.

C08J 3/124
Powdering or granulating: treatment for improving the free-flowing characteristics
C08J 2375/04
Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers: polyurethanes
Y10T 428/2991
Particulate matter [e.g., sphere, flake, etc.]: coated
Y10T 428/2998
Coated: including synthetic resin or polymer

From the US filing history. Foreign family members aren’t listed.

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