Granted Patent B2

US 12,545,765 · App. 17/640,174 · Granted Feb 10, 2026

Inventors: Markus Olschewski (Darmstadt, DE); Elke Metzsch-Zilligen (Darmstadt, DE); Rudolf Pfaendner (Darmstadt, DE)

Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.

C08G79/04C08L85/02

Abstract

Claims (35)

1 . An oligomer or polymer, comprising, as a structural element, a structure according to the general Formula I

wherein

R 1 is defined according to Formula II

wherein

R is the same or different at each occurrence and is selected from the group consisting of hydrogen or linear or branched alkyl radicals having from 1 to 36 carbon atoms, and

x is 0;

the oligomer or polymer further comprising the following repeating unit of Formula III

wherein D is the same or different at each occurrence and is a functionality derived A from an aliphatic or heterocyclic.

2 . The oligomer or polymer according to claim 1 , wherein R 1 is defined according to Formula IIa

3 . The oligomer or polymer according to claim 1 , wherein the functionality derived from a diol is

a) a functionality derived from an aliphatic diol;

b a functionality derived from a heterocyclic diol; or

c) a functionality derived from one of the following diols:

2,3-dimethoxy-1,4-butanediol,

4 . The oligomer or polymer according to claim 3 , where the functionality derived from a diol is a functionality derived from hydroxyethyl-4-hydroxytetramethylpiperidine, 1,4-dithiane-2,5-diol, or 2,3-dimethoxy-1,4-butanediol.

5 . The oligomer or polymer according to claim 1 , wherein the repeating unit is defined according to the repeating units of Formulas III and IIIa

and these are comprised in the oligomer or polymer, wherein D′ corresponds to the definition of D, with the proviso that D and D′ are derived from different diols.

6 . The oligomer or polymer according to claim 5 , wherein the molar ratio of the repeating units III to IIIa is from 0.1:99.9 to 50:50.

7 . A composition comprising at least one organic component to be stabilized and at least one oligomer or polymer according to claim 1 .

8 . The composition according to claim 7 , wherein the at least one oligomer or polymer is present in a proportion by weight, based on the total composition, of 0.01 to 5.0 parts by weight.

9 . The composition according to claim 7 , wherein the at least one organic component to be stabilized is selected from the group consisting of

plastics,

at least one oil, fat or wax, and

polymerizable monomers.

10 . The composition according to claim 7 , comprising at least one additive selected from the group consisting of primary antioxidants, secondary antioxidants, UV absorbers, light stabilizers, metal deactivators, filler deactivators, antiozonants, nucleating agents, antinucleating agents, impact modifiers, plasticizers, lubricants, rheology modifiers, thixotropic agents, chain extenders, processing aids, mold release agents, flame retardants, pigments, dyes, optical brighteners, antimicrobial agents, antistatic agents, slip agents, antiblocking agents, coupling agents, crosslinking agents, anticrosslinking agents, hydrophilic agents, hydrophobic agents, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, blowing agents, degradation additives, defoaming aids, odor scavengers, marking agents, anti-fogging agents, fillers and reinforcements.

11 . A method of stabilizing an organic material comprising incorporating into the organic material an effective amount of an oligomer or polymer according to claim 1 .

12 . The method according to claim 11 , wherein the oligomer or polymer:

provides protection against thermal, actinic or oxidative degradation of plastics,

provides flame retardancy to plastics,

provides protection against thermal, actinic or oxidative degradation of lacquers, paints and coatings,

provides protection against thermal, actinic or oxidative degradation of oils, fats or waxes,

provides protection against thermal, actinic or oxidative degradation of mineral or synthetic lubricants, hydraulic oils, engine oils, turbine oils, gear oils, metalworking fluids or lubricating greases, or

provides protection against premature polymerization and/or oxidation of polymerizable monomers.

13 . A molding compound or a molded part, produced from a plastic composition according to claim 7 .

14 . The molded part according to claim 13 , which is an injection molded part, a foil, a film, a foam, a fiber, a cable, a pipe, a profile, a hollow body, a ribbon, a membrane and/or an adhesive.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (54)