Apparatus for producing a foamed mass of a polyurea elastomer

Details Apparatus for producing a foamed mass of a polyurea elastomer Apparatus for producing a foamed mass of a polyurea elastomer

1992-05-15

1993-12-14

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

422134, 422135, 422224, 366159, 366173, 366174, 366177, 521163, C08F 200, B01F 1502, C08G 1800

Patent

active

052700143

ABSTRACT:
Through three separate passages opening in a common plane at right angles to one another into a mixing chamber, three components of a reactant polyurethane or polyurea elastomer composition to form in a mold cavity are introduced. One of the components is an aliphatic polyether amine having primary amino function and substantially free from free hydroxyl groups, catalysts with tertiary amino groups, carbon dioxide as a carbamate reactive with the polyether amine and optionally other inert gases and conventional polyurea additives. The second component is a polyisocyanate or prepolymer thereof and the third component C is water. The reacting mixture is formed through a throttle gap into the mold to form low-density foamed products under low fuming conditions and has no unreacted diisocyanates.

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