Polymers having terminal hydroxyl aldehyde, or alkylamino substi

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

Filed on

1995-02-27

Date issued

1997-10-07

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

5253328, 5253329, 525383, C08F 800

Type

Patent

Status

active

Patent number

056749503

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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