ger such that the molecular weight of the compound is 1500 to 2000 amu, and R$_{28 }$ is methyl. 

Most preferably in formula (30), R$_{29 }$ is pentadecyl or heptadecyl. 

Still more preferred embodiments of the instant invention 5 are the compounds of formulas (1) to (30) where E-OH, L-OH and -G-0- are formed from 2-methyl-2-propanol ( =tert-butyl alcohol). 

Especially preferred compounds of formula (6) are those where n is 1, R$_{3 }$ is acryloyl, methacryloyl, glycidyl, octadecanoyl, hexadecanoyl, methoxycarbonylpropionyl, methoxycarbonylbutyryl, or methoxycarbonylpentanoyl and where n is 2, R$_{3 }$ is succinyl, glutaryl, adipoyl or sebacoyl. 

Especially preferred compounds of formula (7) are those where R$_{4 }$ is hydrogen, and when p is 1, Rs is hydrogen or butyl, or when p is 2, Rs is hexamethylene. 

Especially preferred compounds of formula (9) are those where R$_{7 }$ is chlorine, octylamino or T$_{1}$-butylamino, R$_{8 }$ is T $_{1 }$-butylamino, and R$_{9 }$ is a divalent nitrogen atom substi› tuted by butyl. 

Especially preferred compounds of formula (10) are those where q is 6, R$_{7 }$ is T$_{1}$-butylamino and Rm is hydrogen. 

Especially preferred compounds of formula (11) are those where n is 3, p is 2, one of R$_{11}$ , or R$_{12 }$ is T 2 and the other is hydrogen. 

Especially preferred compounds of formula (12) are those where d is 1, k is 3, x is 3 or 4, R$_{9 }$ is divalent oxygen atom, and R$_{13 }$ is methyl. 

Especially preferred compounds of formula (13) are those where k is 3, y is 4--8. R$_{9 }$ is a divalent oxygen atom, R$_{13 }$ is hydrogen or methyl, d and h are 0, R$_{14 }$is hydrogen, or d is 1 and h is 0, and R$_{14 }$ is trimethylsilyl. 

Especially preferred compounds of formula (14) are those where m is 0, R$_{9 }$ is a divalent oxygen atom, Rm is hydrogen or methyl, and z is an integer such that the molecular weight of the compound is 1500-3000 amu. 

Especially preferred compounds of formula (15) are those where q is 6, y is 1-7, R$_{1}$s is T $_{1 }$-butylamino, R$_{16 }$ is hydrogen, acetyl, ethylcarbamoyl, 2,4-bis( dibutylamino )-s› triazinyl, 2,4-bis( diethylamino )-s-triazinyl, s-triazinyl sub- stituted twice by T$_{1}$-butylamino or s-triazinyl substituted once by diethylamino or dibutylamino and once by T $_{1 }$-butylamino, R$_{17 }$ is dibutylamino, diethylamino, or T 3 where R$_{18 }$ is acetyl or ethylcarbamoyl. 

Especially preferred compounds of formula (20) are those where R$_{19 }$ is hydrogen, octadecanoyl or hexadecanoyl. 

Especially preferred compounds of formula (21) are those where R$_{20 }$ is succinyl, glutaryl, adipoyl or sebacoyl. 

Especially preferred compound of formula (30) is that where R$_{29 }$ is heptadecyl. 

The instant invention also pertains to a polymer compo› sition containing an effective stabilizing amount of one or more compounds selected from the compounds of formula 

(1) to formula (30) as described above including compounds of formulae (1) and (2) when b is 1 and Eis methyl, ethyl, 

2-propyl or 2-methyl-2-propyl. 

Preferably, the organic material is a natural, semi› synthetic or synthetic polymer, especially a thermoplastic polymer. 

Most preferably, the polymer is a polyolefin, especially a thermoplastic polyolefin useful in automotive coatings and applications or a urethane based automotive coating. 

The compounds of this invention exhibit superior hydro› lytic stability, handling and storage stability as well as good resistance to extractability when present in a stabilized composition. 

In general polymers which can be stabilized include 

1. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, polybut-1-ene, poly-4- methylpent-l-ene, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbornene, polyethylene (which optionally can be crosslinked), for example high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), branched low density polyethylene (BLDPE). 

Polyolefins, i.e. the polymers of monoolefins exemplified in the preceding paragraph, preferably polyethylene and polypropylene, can be prepared by different, and especially by the following, methods: 

a) radical polymerisation (normally under high pressure and at elevated temperature). 

b) catalytic polymerisation using a catalyst that normally contains one or more than one metal of groups IVb, Vb, VIb or VIII of the Periodic Table. These metals usually have one or more than one ligand, typically oxides, halides, alcoholates, esters, ethers, amines, alkyls, alkenyls and/or aryls that may be either it- or a-coordinated. These metal complexes may be in the free form or fixed on substrates, typically on activated magnesium chloride, titanium(III) chloride, alumina or silicon oxide. These catalysts may be soluble or insoluble in the polymerisation medium. The catalysts can be used by themselves in the polymerisation or further activators may be used, typically metal alkyls, metal hydrides, metal alkyl halides, metal alkyl oxides or metal alkyloxanes, said metals being elements of groups Ia, Ila and/or Illa of the Periodic Table. The activators may be modified conveniently with further ester, ether, amine or silyl ether groups. These catalyst systems are usually termed Phillips, Standard Oil Indiana, Ziegler (-Natta), TNZ (DuPont), metallocene or single site catalysts (SSC). 

2. Mixtures of the polymers mentioned under 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP/HDPE, PP/LDPE) and mixtures of different types of polyethylene (for example LDPE/HDPE). 

3. Copolymers of monoolefins and diolefins with each other or with other vinyl monomers, for example ethylene/ propylene copolymers, linear low density polyethylene (LLD PE) and mixtures thereof with low density polyeth› ylene (LDPE), propylene/but-1-ene copolymers, propylene/isobutylene copolymers, ethylene/but-1-ene copolymers, ethylene/hexene copolymers, ethylene/ methylpentene copolymers, ethylene/heptene copolymers, ethylene/octene copolymers, propylene/ butadiene copolymers, isobutylene/isoprene copolymers, ethylene/alkyl acrylate copolymers, ethylene/alkyl meth- acrylate copolymers, ethylene/vinyl acetate copolymers and their copolymers with carbon monoxide or ethylene/ acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyclopentadiene or ethylidene- norbomene; and mixtures of such copolymers with one another and with polymers mentioned in 1) above, for example polypropylene/ethylene-propylene copolymers, LOPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ ethylene-acrylic acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alternating or random polyalkylene/ carbon monoxide copolymers and mixtures thereof with other polymers, for example polyamides. 

4. Hydrocarbon resins (for example Cs-C$_{9}$ ) including hydrogenated modifications thereof ( e.g. tackifiers) and mixtures of polyalkylenes and starch. 

