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公开(公告)号：US3624166A
公开(公告)日：1971-11-30
申请号：US3624166D
申请日：1968-11-01
Applicant: ALLIED CHEM
Inventor： FUHRMANN ROBERT , PISANCHYN JOHN , KOFF FRED WILLIAM
Abstract: This invention relates to an improved method of separating haloalkanes from alkanes or other haloalkanes of lower halogen to carbon ratio by extraction with dialkyl sulfoxides, cyclic lactams or nitroparaffins. The haloalkanes of interest are fluoroalkanes, chloroalkanes, and bromoalkanes.
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2.发明授权Beta hydroxyethoxy phenyl isopropylidene benzoic acid and ester derivatives method of preparation and polymers of said compounds 失效β-羟基乙氧基苯基异丙基苯甲酸和酯衍生物制备方法和化合物的聚合物
公开(公告)号：US3668182A
公开(公告)日：1972-06-06
申请号：US3668182D
申请日：1970-01-20
Applicant: ALLIED CHEM
Inventor： FUHRMANN ROBERT , PISANCHYN JOHN , KOFF FRED WILLIAM
IPC: C07C65/21 , C08G63/66 , C08G63/664
CPC classification number: C08G63/66 , C07C65/21 , C08G63/664
Abstract: Polycondensation of monomer of the structure:
WHEREIN R is H or a C1-C6 alkyl group, wherein X is an alkyl radical of up to four carbons, chlorine or bromine, and n is O-4, affords polymers having recutting units of the structure:
These polymers have good thermal stability and transparency and a high, but not unduly high, glass transition temperature.Abstract translation: 结构单体缩聚：
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