Filler-containing polyurethane (urea) compositions prepared from

Details Filler-containing polyurethane (urea) compositions prepared from Filler-containing polyurethane (urea) compositions prepared from

1984-11-16

1986-08-26

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

210679, 435 35, 435144, 435174, 435180, 523123, 524705, 524785, 524789, 524791, C08G 1814

Patent

active

046083979

ABSTRACT:
The invention relates to a process for the production of polyurethane(urea) compositions which contain lignite and/or peat bound in an abrasion-proof manner, which are preferably modified cationically and which have a very high water absorbability. The compositions are produced by reacting isocyanate-terminated prepolymers, which are preferably cationically modified, and which preferably have a functionality of more than 2.1, with more than the stoichiometric quantity of water in the presence of lignite and/or peat and optionally in the presence of organic and/or inorganic fillers and biomasses (living cells, living bacteria or enzymes). The corresponding polyurethane(urea) compositions contain up to 95% by weight of lignite and/or peat in the filler-containing polyurethane(urea) composition and are already swollen from production. The water absorbability (WAF) value thereof when suspended in water is from 33 to 97% by weight of water.
The compositions can be used, in a form optionally containing biomasses incorporated therein, as carriers in microbial synthesis processes for the production of complicated organic compounds, or as carriers for the growth of plants.

REFERENCES:
patent: 3805532 (1974-04-01), Kistner
patent: 3812619 (1974-05-01), Wood et al.
patent: 4329436 (1982-05-01), Dedolph
patent: 4404296 (1983-09-01), Schapel
patent: 4454044 (1984-06-01), Klein
patent: 4503150 (1985-03-01), Triolo
Tanaka et al., Entrapment of Microbial Cells and Organelles with Hydrophilic Urethane Prepolymers, European Journal of Applied Microbiology and Biotechnology, 7, (1979), pp. 351-354.

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