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

1998-12-28

2000-12-05

Cooney, Jr., John M.

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

Synthetic resins

Process of treating scrap or waste product containing solid...

521 495, 25218224, 568700, C08J 1104

Patent

active

061568112

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.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.
patent: 5879608 (1999-03-01), Lammeck et al.

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