Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1986-11-04
1988-03-29
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 83, 521 841, 521101, 521102, 5211091, 521905, 435 41, 210807, C08J 942
Patent
active
047344393
ABSTRACT:
This invention relates to polyurethane(urea) compositions which contain foam and which are preferably cationically modified, contain non-abrasively bonded fillers and have a very high water absorbability (WAF).
Production is effected by reacting isocyanate-terminated prepolymers with a quantity of water far exceeding the stoichiometric quantity in the presence of foams in particle or film form. The reaction mixture may also contain lignite powder and/or peat, other inorganic and organic fillers and/or biomasses (living cells, living bacteria, enzymes).
The polyurethane(urea) compositions contain up to 95% by weight of foam particles and may contain further fillers (preferably lignite and/or peat). The compositions are swollen and have a high water content during production. Their water absorbability (WAF) when suspended in water is 33 to 97% by weight of water. They can be used as carriers in microbic synthesis processes for the production of complicated organic compounds (when they have incorporated biomasses) as special carriers for the growth of plants, as filter agents or as adsorbents for non water-soluble liquids [for example, crude oil or petrol].
REFERENCES:
patent: 2955056 (1960-10-01), Knox
patent: 3114722 (1963-12-01), Einhorn
patent: 3594335 (1971-07-01), Schultz
patent: 3805532 (1974-04-01), Kistner
patent: 3812618 (1974-05-01), Wood
patent: 3812619 (1974-05-01), Wood
patent: 3867492 (1975-02-01), Drostholm
patent: 3965051 (1976-06-01), Markusch
patent: 4014826 (1977-03-01), Yunan
patent: 4082703 (1978-04-01), Duffy et al.
patent: 4105594 (1978-08-01), Dieterich
patent: 4229398 (1980-10-01), Harvey
patent: 4241537 (1980-12-01), Wood
patent: 4254177 (1981-03-01), Fulmer
patent: 4315996 (1982-02-01), Baatz
patent: 4329436 (1982-05-01), Dedolph
patent: 4393166 (1983-07-01), Reischl et al.
patent: 4404296 (1983-09-01), Schapel
patent: 4419261 (1983-12-01), Takahashi
patent: 4454259 (1984-06-01), Reischl et al.
patent: 4495310 (1985-01-01), Dedolph
patent: 4503150 (1985-03-01), Triolo
Tanaka et al., Entrapment of Microbial Cells and Organellfs with Hydrophilic Urethane Prepolymers European Journal of Applied Microbiology and Biotechnology, 7, (1979), pp. 351-354.
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Ivy C. Warren
LandOfFree
Foam-containing polyurethane(urea) compositions and process for does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foam-containing polyurethane(urea) compositions and process for , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam-containing polyurethane(urea) compositions and process for will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1089339