Inventor
DORAI SURIYANARAYAN
US11 patents
Patents
11 patentsUS5149862ASep 22, 1992
Preparation of polytetramethylene ether glycol using an acidic zirconia catalyst
DU PONT26 citations89
US5282929AFeb 1, 1994
Reducing molecular weight distribution of polyether glycols by short-path distillation
DU PONT17 citations78
US5118869AJun 2, 1992
Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups
DU PONT21 citations78
US5852218ADec 22, 1998
Alkanolysis of polyether polyol esters by reactive distillation
DU PONT7 citations72
US5684179ANov 4, 1997
Method for recovering diacetate esters of polytetramethylene ethers
DU PONT7 citations72
US5302255AApr 12, 1994
Reducing molecular weight distribution of polyether glycols by short-path distillation
DU PONT10 citations70
US5130470AJul 14, 1992
Polymerization of tetrahydrofuran using a fluorinated acidic catalyst and maleic acid/maleic anhydride mixture as molecular weight control agent
DU PONT20 citations67
US5155283AOct 13, 1992
Polymerization of tetrahydrofuran using trifluoromethane sulfonic acid monohydrate as catalyst
DU PONT3 citations57
USRE35360EOct 22, 1996
Reduction of molecular weight of poly(tetramethylene ether) glycol
DU PONT0 citations51
US5180857AJan 19, 1993
Reduction of molecular weight of poly(tetramethylene ether) glycol
DU PONT0 citations51
US5962727AOct 5, 1999
Method for manufacturing diacetate esters of polytetramethylene ethers
DU PONT1 citations42