Process for producing low-emission polyurethane moldings and com

Details Process for producing low-emission polyurethane moldings and com Process for producing low-emission polyurethane moldings and com

1996-07-31

1998-06-02

Gorr, Rachel

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 451, 264 458, 264 465, 156 77, 156 78, 156 79, 4284242, 4284244, 4284246, 4284247, 521128, 521129, 521130, 521157, 528 49, 528 53, 528 57, 528 84, C08G 1818

Patent

active

057600988

ABSTRACT:
A process is described for producing polyurethane moldings by the reaction of compounds of molecular weight 400 to 10,000 which contain at least 2 hydrogen atoms capable of reacting with isocyanates, and optionally chain extenders of molecular weight 32 to 399, with polyisocyanates, optionally in the presence of foaming agents, auxiliary materials and additives, in which defined carbamates are used as activators. The polyurethanes obtained by this process are particularly low in emissions, i.e. are stable in relation to diffusion and exhibit low fogging, and are thus particularly suitable for the production of composite bodies comprising a polyurethane core and at least one further plastic material as an outer layer. Also described is the use of these moldings and composite bodies which are stable in relation to diffusion and which cause low fogging, e.g. as dashboards or door trims in the construction of vehicles, furniture, machines or apparatus.

REFERENCES:
patent: 4542214 (1985-09-01), Bechara

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