Polyurethane carpet backing process based on polymeric MDI quasi

Details Polyurethane carpet backing process based on polymeric MDI quasi Polyurethane carpet backing process based on polymeric MDI quasi

1994-02-15

1995-10-31

Dudash, Diana

Coating processes

Foraminous product produced

Filter, sponge, or foam

427373, B05D 310, B05D 302

Patent

active

054627664

ABSTRACT:
This invention relates to a process for the production of a polyurethane cushion backing on a substrate. In particular, the polyurethane to be used in the process is produced by the reaction of an isocyanate and a polyol mixture, wherein the isocyanate is based on polymethylene poly(phenylisocyanate) and having a monomer content of less than 55%, a 2,2'- and 2,4'-methylene bis(phenylisocyanate) content of less than 3%, a functionality of less than 2.5, an isocyanate group content of 25 to 30%, and a urethane group content of about 2 to 6%.

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