The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Low-Temperature Lubricating Engine Oil Additives

Report Number: WADC TR 53-11
Author: Gavlin, Gilbert
Author: Jones, Jr,, Sam P.
Author: Swire, Edwin A.
Corporate Author: Armour Research Foundation, Illinois Institute Of Technology
Corporate Report Number: None Given
Laboratory: Materials Laboratory
Date of Publication: 1953-04
Pages: 370
Contract: AF 33(038)-1644
Project: None Given
PB Number: PB119093
AD Number: AD0020716

The structural requirements of pour-point depressants as fixed by studies of acrylic polymers are indicated to be an alkyl side chain length of at least 12 carbons and a degree of polymerization commensurate with suitable over- all physical properties. Polyhexadecylene phthalate was prepared which was capable of lowering the pour point of an untreated MIL-L-6082A AN-)-* 1100 grade oil 30 F. Light microscopical and x-ray diffraction studies of the action of additives on blends of synthetic n-paraffin waxes in dewaxed oil support the theory that pour-point depressants do not enter the crystal lattice but act by means of a surface phenomenon. A review of the literature and an evaluation of commericial additives are given.

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