# US 5,348,560 A · Carbamates, their preparation and fuels and lubricants containing the carbamates

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- Number: US 5,348,560 A
- Document ID: US5348560A
- Status: Granted
- Kind: A
- Application number: 07/975,732
- Filed: 1992-11-13
- Granted: 1994-09-20
- Earliest claimed: 1991-11-16
- Assignees: BASF SE
- Inventors: Juergen Mohr; Knut Oppenlaender; Wolf-Dieter Balzer; Juergen Thomas; Peter Schreyer
- Web page: https://patentgrep.com/patent/US5348560A

## CPC

- C10M 133/18: of carbonic or haloformic acids
- C08F 8/00: Chemical modification by after-treatment (graft polymers, block polymers, crosslinking with unsaturated monomers or with polymers C08F251/00 - C08F299/00; of conjugated diene rubbers C08C)
- C08F 8/30: Introducing nitrogen atoms or nitrogen-containing groups
- C10L 1/224: Amides; Imides {carboxylic acid amides, imides (C10L1/221, C10L1/2227 take precedence)}
- C10L 1/2383: Polyamines or polyimines, or derivatives thereof {(poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C) (C10L1/221 takes precedence)}
- C10M 2215/10: Amides of carbonic or haloformic acids
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS

## Abstract

Carbamates having a long-chain N-alkyl radical, a process for the preparation of the carbamates in a conventional manner and fuels and lubricants which contain these carbamates as additives.

## Claims

### Claim 1

A carbamate of the following formula I ##STR7## where R.sup.1 is a polybutyl or polyisobutyl radical derived from isobutene and from 0 to 30% by weight of n-butene and having a molecular weight of from 250 to 5,000 R.sup.2 is of the following formula II ##STR8## where R.sup.4 and R.sup.5 are independently hydrogen, methyl or ethyl, R.sup.3 is hydrogen and n is 1.

### Claim 2 (depends on 1)

A carbamate as claimed in claim 1, wherein R.sup.1 is a polyisobutyl radical having a molecular weight of from 500 to 2,000.

### Claim 3 (depends on 1)

A liquid fuel mixture, which contains a carbamate of the formula I as claimed in claim 1.

### Claim 4 (depends on 3)

A liquid fuel mixture as claimed in claim 3, which contains from 10 to 5,000 ppm of a carbamate of the formula I.

### Claim 5 (depends on 3)

A liquid fuel mixture as claimed in claim 3, which, in addition to a carbamate of the formula I, contains a fuel detergent as an additional additive.