Polymers having terminal hydroxyl, aldehyde, or alkylamino subst

Details Polymers having terminal hydroxyl, aldehyde, or alkylamino subst Polymers having terminal hydroxyl, aldehyde, or alkylamino subst

Filed on

1998-03-06

Date issued

1999-07-06

Examiner

Lipman, Bernard

Patent Class

Synthetic resins or natural rubbers -- part of the class 520 ser

SubClass

Synthetic resins

SubSubClass

Mixing of two or more solid polymers; mixing of solid...

Other Related Categories

508558, 5253321, 5253328, 5253329, 5253331, 525379, 525382, C08F 832

Type

Patent

Status

active

Patent number

059198699

Description

ABSTRACT:
A polymer having a terminal hydroxyl, aldehyde or alkylamino substituent which may be used directly or in a derivative form as a dispersant for both fuel and lubricating oil compositions, wherein the polymer has a M.sub.n of about 300 to 10,000, and is derived from a polyolefin which is derived from a polyene (diene, e.g.), monomer of the formula H.sub.2 C.dbd.CHR.sup.4, wherein R.sup.4 is hydrogen or a straight or branched chain alkyl radical. Preferably, the polyolefin has at least about 30% terminal vinylidene unsaturation. Particularly desirable amine derivatives can be formed by either a single step aminomethylation process or a two step hydroformylation and reductive amination process.

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