Method of and apparatus for producing a foamed mass of a polyure

Details Method of and apparatus for producing a foamed mass of a polyure Method of and apparatus for producing a foamed mass of a polyure

1992-03-13

1992-10-20

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521917, G08G 1800

Patent

active

051570599

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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M. Taverna: Conference Paper UTECH 1990, pp. 70-73, "Substitution of CFCs: The Machinery Manufacturers' Contribution".

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