公开(公告)号：US3028404A

公开(公告)日：1962-04-03

申请号：US77123358

申请日：1958-11-03

Applicant: ETHYL CORP

Inventor： PEARSON TILLMON H ,  PRESSWOOD JOHN K

IPC: C07F17/00

CPC classification number: C07F17/00

公开(公告)号：US3160672A

公开(公告)日：1964-12-08

申请号：US7235660

申请日：1960-11-29

Applicant: ETHYL CORP

Inventor： PEARSON TILLMON H ,  PRESSWOOD JOHN K

IPC: C07C2/30

CPC classification number: C07C2/30 ,  C07C2531/14

公开(公告)号：US3194834A

公开(公告)日：1965-07-13

申请号：US16089961

申请日：1961-12-20

Applicant: ETHYL CORP

Inventor： PRESSWOOD JOHN K

IPC: C07C29/52 ,  C07C29/54 ,  C07C37/00 ,  C07C37/01 ,  C07C45/32 ,  C07C51/21 ,  C07C51/265

CPC classification number: C07C51/21 ,  C07C29/52 ,  C07C37/01 ,  C07C45/32 ,  C07C51/265 ,  C07C61/08 ,  C07C53/126 ,  C07C63/06 ,  C07C31/125 ,  C07C31/12 ,  C07C39/04 ,  C07C39/07 ,  C07C33/22 ,  C07C39/14

公开(公告)号：US3557236A

公开(公告)日：1971-01-19

申请号：US3557236D

申请日：1968-03-18

Applicant: ETHYL CORP

Inventor： PRESSWOOD JOHN K ,  FOSTER WALTER E

IPC: C07C7/148 ,  C07F5/06 ,  C07C11/02

CPC classification number: C07F5/066 ,  C07C7/148 ,  C07C7/14816 ,  C07C2531/14 ,  Y10S585/952 ,  C07C11/02

Abstract: THE SEPARATION OF OLEFIN MATERIALS FROM TRIALKYL ALUMINUM MATERIALS IS ENHANCED BY REACTING SUCH MIXTURES WITH DRY AIR TO CONVERT A PORTION, AT LEAST ABOUT ONE-THIRD, OF ALL TRIALKYL ALUMINUM MOLECULES TO AT LEAST A MONO ALKOXY ALUMINUM SPECIES AND VAPORIZING AT LEAST A PORTION OF THE OLEFINS AT ELEVATED TEMPERATURE. ENHANCED SEPARATION IS OBTAINED AND ISOMERIZATION, DIMERIZATION AND OTHER REACTIONS ARE OTHERWISE CATALYZED BY TRIALKY ALUMINUM MATERIALS AT THE SEPARATION TEMPERATURES ARE MINIMIZED. THE OLEFIN MATERIALS AND TRIALKYL ALUMINUM MATERIALS CAN BE IN LIQUID OR VAPOR PHASES OR COMBINATIONS. GENERALLY SPEAKING, THE OLEFINS ARE THEN RECOVERED AS A VAPOR AND THE ALUMINUM MATERIALS AS LIQUID.

公开(公告)号：US3400170A

公开(公告)日：1968-09-03

申请号：US63401567

申请日：1967-03-16

Applicant: ETHYL CORP

Inventor： PRESSWOOD JOHN K ,  FOSTER WALTER E

IPC: C07C1/00 ,  C07C2/30 ,  C07C7/148 ,  C07C7/173 ,  C07C11/02 ,  C07C27/00 ,  C07C29/72 ,  C07C31/32 ,  C07C67/00 ,  C07F5/06

CPC classification number: C07C2/30 ,  C07C7/14875 ,  C07C7/173 ,  C07C11/02 ,  C07C2531/14 ,  C07F5/066 ,  Y02P20/582

公开(公告)号：US2987530A

公开(公告)日：1961-06-06

申请号：US73078758

申请日：1958-04-25

Applicant: ETHYL CORP

Inventor： PEARSON TILLMON H ,  PRESSWOOD JOHN K

IPC: C07F13/00

CPC classification number: C07F13/00

公开(公告)号：CA744411A

公开(公告)日：1966-10-11

申请号：CA744411D

Applicant: ETHYL CORP

Inventor： PEARSON TILLMON H ,  PRESSWOOD JOHN K

公开(公告)号：CA1269477A

公开(公告)日：1990-05-22

申请号：CA522247

申请日：1986-11-05

Applicant: ETHYL CORP

Inventor： PRESSWOOD JOHN K

IPC: B29C45/00 ,  C08G18/32 ,  C08G18/65 ,  C08G18/66 ,  C08G18/80

Abstract: Mixtures of aromatic diamines, polyurethanes made therefrom, and processes for the preparation of the polyurethanes. The mixtures of aromatic diamines of the invention comprise a first aromatic diamine having a machine gel time of 1 to 4 seconds in a 50,000 psi modulus RIM formulation reaction and the second aromatic diamine having a slower machine gel time of 1.5 to 15 times that of the first aromatic diamine. The mixtures provide gel times of 2.5 to 10 seconds, suitable for filling large molds such as automative body panels. The novel aromatic diamine mixtures allow use of larger proportions of diamine to provide polyurethanes which are rigid but not brittle at demold and have unexpectedly superior flexural modulus properties. The polyurethanes formed with the chain extender mixtures of the invention have flexural modulus superior to polyurethanes formed from either of the diamines individually.

公开(公告)号：CA793362A

公开(公告)日：1968-08-27

申请号：CA793362D

Applicant: ETHYL CORP

Inventor： FOSTER WALTER E ,  PRESSWOOD JOHN K

公开(公告)号：CA706903A

公开(公告)日：1965-03-30

申请号：CA706903D

Applicant: ETHYL CORP

Inventor： PEARSON TILLMON H ,  PRESSWOOD JOHN K