Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-10-01
1994-07-19
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524516, 524527, 524560, 524568, G21F 110, C08L 2716, C08L 3306, C08L 3906
Patent
active
053310225
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase application of PCT/CH 92/00063 which is based upon a Swiss national application 1046/91 filed 9 Apr. 1991 under the International Convention.
FIELD OF THE INVENTION
The invention relates to a method of reducing a radon load in closed spaces by sealing same, to a composition for carrying out the method, and to a method for producing the composition for the protection of rooms and whose action massively diminishes radon infiltration.
BACKGROUND OF THE INVENTION
The radiation load on the human body consists primarily of radiation coming from technical apparatus (television, x-ray machines, etc.), cosmic radiation and artificial and natural radioactivity. Lately, we have become increasingly aware of the danger of natural radioactive radiation. This acts not only at the location of deposits of uranium-containing ore and rock, but can be found also in residential and other buildings, because of the use of uranium-containing construction materials.
Natural radioactivity appears in all elements with an atomic number higher than 80. The radioactive isotopes of these elements have mostly very short half-lifes and could not be detected today--approximately 6 billion years after their formation. However, they continue to form again and again due to alpha or beta decomposition from the decomposition of the uranium isotopes 238 and 235 with a very long life, as well as of the thorium isotope 232. As a result of the longevity of the uranium isotopes, the radioactive radiation coming from uranium is very low. However, in the course of the uranium disintegration chain which finally ends with the inactive lead a new gaseous intermediate product appears, radon 222, which disintegrates again within a short time period, but not without leaving behind a number of stable radioactive products.
Radon is a colorless, tasteless and odorless radioactive gas which due to its high atomic weight collects mainly at the bottoms of rooms. Particularly basement rooms and other rooms bordering on the ground can therefore have a considerable degree of radioactive contamination. Also materials used in construction, such as clay, construction materials containing pumice, cemented stones with slag additives or granite often contain uranium emitting gaseous, radioactive radon.
Lately, public opinion has become increasingly sensitive to the dangers of radioactive contamination, due to various accidents in nuclear power plants. At the same time, there is an increased awareness of the dangers resulting from other types of radiation, such as widespread medical testing and radiation therapy, as well as the dangers of natural radioactivity. Scientific research has proven that the health-injuring effects of natural radioactivity are considerably higher than has been assumed. It has for instance been established that in certain living spaces the radioactivity level is much higher than acceptable. It has been found that the cause is the accumulation of radon in dangerous concentrations in residential and other buildings, whereby especially the building basement floors with poor ventilation and the buildings without basements, erected directly on the soil, are particularly afflicted by radon infiltrating from the surrounding soil.
For this reason, lately measures for the reduction of radon infiltration in living spaces have been proposed. However, the known measures are either effective for only a short time, e.g. intensive ventilation of these rooms, or complicated, expensive and short-lived. For instance wall hangings of plastic foil, e.g. polyvinyl chloride or polyurethane or of light metal, have been proposed. It has also been proposed to seal the rooms with polyurethane resins. However, these known steps have not proven themselves in practice, since they can not completely cover the nooks and crannies and also can not evenly and completely cover the curves or corners. Besides, these known web-like coverings made of plastic or light metal, unlike the usual wall covering
REFERENCES:
patent: 2748027 (1956-05-01), Meier
patent: 2909449 (1959-10-01), Banigan
patent: 3779971 (1973-12-01), Isenburg
patent: 4543386 (1985-09-01), Padget et al.
patent: 4543387 (1985-09-01), Padget et al.
patent: 4544699 (1985-10-01), Biale
Hess Josef
Jochmann Ludwig
Dubno Herbert
Hesco AG, Industrieconsulting & Industrievertretungen
Michl Paul R.
Szekely Peter
LandOfFree
Method for the reduction of radon load in closed spaces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the reduction of radon load in closed spaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the reduction of radon load in closed spaces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-520494