Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-03-09
1999-03-23
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
121 58, 121 97, 121139, 121146, 264 50, 264 53, 5253322, 55522, 55524, C08F 1400
Patent
active
058860614
ABSTRACT:
Polymers capable of reversibly complexing carbon dioxide and other acid gases and a method of producing such polymers are disclosed. In a preferred embodiment, the present polymers incorporate amine groups capable of reversibly complexing carbon dioxide to produce an environmentally safe foamed polymer product. Because the reaction of an amine and CO.sub.2 is a reversible reaction, and because the amines are incorporated into the polymer backbone, the foamed polymers can be reverted to foamable polymers simply by collection, washing, granulating, and re-exposure to CO.sub.2. The polymers are environmentally desirable as carbon dioxide is non-toxic and is easily isolated from the atmosphere. Moreover, the process recycles the gas continually, rather than generating new gases.
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patent: 4925606 (1990-05-01), Francis et al.
patent: 5380767 (1995-01-01), Suh et al.
patent: 5507848 (1996-04-01), Beckman
Truong Duc
University of Pittsburgh
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