Difunctional Monomers Based on Perfluoropropylene Telomers
摘要:
Telomers of perfluoropropylene with alpha,omega-diiodoperfluoroalkanes were converted to branched-chain difunctional condensation monomers. The reaction of ethylene with the telomers gave alpha,omega-bis(iodoethyl)perfluoroalkanes, which were converted to the corresponding diols by reaction with fuming sulfuric acid. The reaction of the branched-chain alpha,omega-bis(iodoethyl)perfluoroalkane a with sodium azide gave the corresponding alpha,omega-bis(azidoethyl)perfluoroalkanes. Hydrogenation of the alpha,omega-bis(azidoethyl)perfluoroalkanes gave diamines. Phosgenation of the amino groups gave diisocyanates.
Polyfluorinated, branched-chain diols and diisocyanantes and fluorinated
申请人:Fluorochem Inc.
公开号:US05204441A1
公开(公告)日:1993-04-20
Branched-chain diols and a method of forming them by reacting 1,4-diiodoperfluorobutane and perfluoropropylene to obtain branched-chain diiodide adducts thereof, reacting the diiodide adducts with ethylene to obtain I--CH.sub.2 CH.sub.2 --R--CH.sub.2 CH.sub.2 --I, wherein R is a branched-chain perfluoroalkyl radical, and hydrolysing the iodo groups to alcohols to obtain HO--CH.sub.2 CH.sub.2 --R--CH.sub.2 CH.sub.2 --OH. These diols can be reacted with branched-chain diisocyanates to form polyurethanes of better processability and lower glass transition temperatures than polyurethanes prepared from linear fluorinated monomers.
Baum Kurt, Malik Aslam A., J. Org. Chem, 59 (1994) N 22, S 6804- 6807
作者:Baum Kurt, Malik Aslam A.
DOI:——
日期:——
Fluorinated reactive compositions for golf balls
申请人:Rajagopalan Murali
公开号:US20060199937A1
公开(公告)日:2006-09-07
A golf ball is disclosued, comprising: a core, the core having a diameter of 1.5 inches to 1.65 inches and a first coefficient of restitution of 0.8 or greater at 125 ft/s; an intermediate layer disposed about the core, the intermediate layer having a first Shore D hardness of 20 to 80 and comprising a blend of two or more ionomers; and an outer cover layer disposed about the intermediate layer; the outer cover layer having a thickness of 0.005 inches to 0.05 inches and a second Shore D hardness of 30 to 70, the outer cover layer being composed of a castable material formed from reactants comprising at least one fluorinated polyfunctional compound, wherein the golf ball has a second coefficient of restitution of 0.8 or greater at 125 ft/s and a compression of 50 to 120.