Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di

Details Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di

1988-04-22

1989-09-12

Howard, Jacqueline V.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

252 486, 252 56D, 44 76, C07D30732

Patent

active

048661872

ABSTRACT:
Thio-bis-(hydrocarbyl substituted diacid materials), such as thio-bis-(polyalkyl lactone acid) and/or their precursors the adducts of sulfur chloride and unsaturated diacid materials, e.g., 4,8-bis-polyalkyl-4,8-dichloro-5-thiaundecane-1,2,10,11-tetracarboxylic acid bis-anhydride and their dehydrochlorinated analogs, when esterified with an alcohol, preferably a polyol, such as pentaerythritol, polypentaerythritol or a polyalkylene glycol with or without acid catalysts and/or metal template reagents yield thio-bis-(alkyl lactone acid esters) and thio-bis-(hydrocarbyl diacid esters) which can be characterized in part, as macrocyclic and/or macrocyclic-like structures, are useful as stable additives in lubricating compositions, e.g. as varnish inhibiting dispersants for lubricating oils and fuels.

REFERENCES:
patent: 4062786 (1977-12-01), Brois et al.
patent: 4123373 (1978-10-01), Brois et al.
patent: 4167514 (1979-09-01), Brois et al.
patent: 4239636 (1980-12-01), Brois et al.
patent: 4417062 (1983-11-01), Brois et al.

Affiliated with

Also associated with

Rating

Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl di will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-917857