Molded polyurethane articles prepared from recycled polyols and

Details Molded polyurethane articles prepared from recycled polyols and Molded polyurethane articles prepared from recycled polyols and

1996-10-30

1999-03-09

Niland, Patrick D.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

524589, 524590, B27N 308, B28B 1900, B29C 5100, B29C 5300

Patent

active

058796088

ABSTRACT:
Molded polyurethane articles are made by reacting polyisocyanates with polyol compositions obtained by chemical decomposition of polyurethane and/or polyurea waste in a mold. The polyol compositions employed in this invention have an OH value of from about 100 to about 500 mg KOH/g, a water content of from 0 to about 5 wt. % and a viscosity at 20.degree. C. of more than 2,000 mPa.multidot.s. These molded polyurethane articles preferably have a sandwich structure in which the core is a polyurethane and there is at least one outer layer made from an optionally fiber-reinforced plastic material. These molded polyurethane articles are useful in the motor vehicle, furniture, machine and equipment manufacturing industries.

REFERENCES:
patent: 5338763 (1994-08-01), Munzamy et al.

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