ON CARRIER MEANS ANTIOXIDANTIEN AND LIGHT-PROTECTIVE FIXED AS FILLERS AND STABILIZERS
Carrier-bound light stabilizers and antioxidants as fillers and stabilizers The present invention relates to carrier-bound light stabilizers and antioxidants, to composi¬ tions comprising an organic material, preferably a polymer, and the carrier-bound light sta¬ bilizers and antioxidants, and to the use thereof as fillers and for stabilizing organic mate¬ rials against oxidative, thermal and/or light-induced degradation.
The addition of fillers to organic materials, especially polymers, is known and is described for example in H.S. Katz/J.V. Milewski (eds.), Handbook of Fillers for Plastics, Van Nostrand Reinhold Publishers, New York 1987; in R. Gâchter/H. Muller (eds.), Plastics Additives Handbook, 3rd éd., pages 525-591, Hanser Publishers, Munich 1990; und Ullmann's Ency¬ clopedia of Industrial Chemistry, Vol. A20, pages 494-497, 5th edition, VCH Verlagsgesell- schaft, Weinheim 1987. The use of fillers in polymers has the advantage that it is possible to bring about improvement in, for example, the mechanical properties, especially the den¬ sity, hardness, rigidity or impact strength of the polymer. Since the fillers are often less ex¬ pensive than the pure polymers, the replacement of part of the expensive pure polymers by fillers also leads to a reduction in the cost of the polymer.
For the purpose of improving the adhesion and compatibility of the fillers with the organic materials, the fillers are preferably provided with a coating before being employed in the organic materials, preferably polymers. As is evident from the literature references men¬ tioned at the outset, US-A-1 264 092, US-A-1 832 416, US-A-1 832 417, US-A-2 199 710, US-A-2 345 191, US-A-2 374 741, US-A-2 663 695, EP-A-0 038 620, US-A-4 283 316, US-A-4 420 341, US-A-4 795 767, CS-B-208 547 (C.A. IQ, 193080r) or CS-B-225 404 (C.A. 102. 1504641), coating of the fillers is carried out, for example, using fatty acids, es¬ pecially stearic acid or palmitic acid, with hydrocarbons, with waxes or with so-called adhe¬ sion promoters as disclosed in Chapter 9.3.5 of Ft. Gàchter/H. Mûller (eds.), Plastics Addi¬ tives Handbook, 3rd éd., pages 544-546, Hanser Publishers, Munich 1990.
EP-A-0 038 620 discloses the coating of fillers with thermally labile acidic sulfur compounds which decompose when the coated filler is incorporated into the polymer, forming vulcaniza¬ tion-active sulfur compounds.
US-A-4 420 341 discloses the coating of fillers with oxidation-sensitive unsaturated fatty acids stabilized with antioxidants.
CS-B-208 547 (C.A. iflQ, 193080r) likewise desribes the coating of fillers, especially calcium carbonate, with C-C fatty acids, followed by stabilization of this coat with antioxidants.
CS-B-225 404 (C.A. 1Û2, 1504641) discloses the coating of mica as filler for polypropylene with silanes, especially triethoxyvinylsilane, and subsequent stabilization of this coat with antioxidants, for example distearyl thiodipropionate or tris(alkylphenyl) phosphites.
The known coating compositions or adhesion promoters do not in all respects satisfy the exacting demands which should be met by a coating composition for a filler which is to be employed in an organic material, especially a polymer.
A coating of fillers for organic materials, especially polymers, which consists exclusively of an antioxidant and/or light stabilizer has not been disclosed in the literature, and is therefore a subject of the present application.
The stabilization of organic materials, especially polymers, with antioxidants from the class of the sterically hindered phenols is known, for example, from US-A-3 839 278, US-A-4 032 562, US-A-4 058 502, US-A-4 093 587 and US-A-4 132 702. Sterically hin¬ dered amines, including in particular compounds comprising 2,2,6,6-tetramethylpiperidyl groups, are preferably employed as light stabilizers ("hindered amine light stabilizers"; HALS).
It has now been found that a selected group of such antioxidants from the class of the ste¬ rically hindered phenols, thioalkyicarboxylic acids and thioalkylcarboxylic esters, and a se¬ lected group of light stabilizers from the class of sterically hindered amines, are particularly suitable as stabilizers for organic materials and, simultaneously, as coating compositions for fillers which are employed in organic materials sensitive to oxidative, thermal and/or light- induced degradation.
The present invention therefore relates to carrier-bound compounds of the formula I, II, Ml and/or IV 3- (I) ("ï Rr -(CH2) 2/p o R.
(Ill) CH {IV) in which Ri is d-Cisalkyl, Cs-Ciacycloalkyl, phenyl orC7-C9phenylalkyl, R2 is Ci-Ciealkyl, Cs-Ciacycloalkyl, phenyl or CT-Cgphenylalkyl, R4 is hydrogen, Ct-Caoalkyl, naphthyl or phenyl which is unsubstituted or is substituted by Ci-C4alkyl; ammonium or M_ , Rs is hydrogen, CrC-joalkyl, naphthyl or phenyl which is unsubstituted or is substituted by CrC4aIkyi; ammonium or M r+ 4- Re is hydrogen, Ci-Ciaalkyl.Cs-Ciacycloalkyl.CrCQphenylalkyl, ammonium or — , R7 is Ci-daalkyi, phenyl which is unsubstituted or is substituted by dalkyl; or —(CH2)—COaR6 , Rs is d-Caalkyf, R9 is hydrogen, d-Csalkyl, O", OH, NO, -CH2CN, d-d8aikoxy, C5-d2cycloalkyloxy( d-Cealkenyl, Cs-dalkynyl, CrCsacyi, d-dphenylalkyi which is unsubstituted or is substituted on the phenyl ring by d-dalkyi, O o p . Il / \ Rio IS c—X-COOR6 , CH —CH—CH2 Of —Xg—COOR6 , R,, is hydrogen or Crdsalkyl, Ri2 is Ci-Cf8alkyl or Cz-d+alkenyl, R13 is hydrogen or Crda[kyi, M is an r-valent metal cation, Xi is a direct bond, CrC8alkyiene, Ca-Csaikylene which is interrupted by oxygen or sulfur; R, —CHj CF or HO R, 1—C—CH-CH3 , where R, and R2 are as defined above, X2 is oxygen or -NH-, X3 is CrCeaikylene, X4 is oxygen or -NRn-, X5 is a direct bond, d-Csalkylene, C2-C8a]kenylene, CH—R12 , — /)—"» , -j>Ro c, -p- R13 -5 X6 is Ci-Ciaalkylene, C2-Ci8alkeny!ene, C2-C16alkylene which is interrupted by oxygen or sulfur; or is phenyiene, m isO, 1 or 2, n is an integer in the range from 1 to 6, p is 1 or 2, qis 1 or 2, r is 1, 2 or 3, and if n is 1, Ra is hydrogen, C-Czsalkyl, C5-C12cycloaIkyi, phenyl which is unsubstituted or is substituted by Ci-C4alkyl; a monovalent radical of a hexose, a monovalent radical of a hexitol; and, if X2 is oxygen, R3 is additionally ammonium or L , or r if n is 2, R3 is CjrCiaalkylene, Ci-Calkylene which is interrupted by oxygen or sulfur; a divalent radical of a hexose or a divalent radical of a hexitol, or if n is 3, Rs is —cHj—CH—CHj . a trivalent radical of a hexose or a trivalent radical of a hexitol, or if n is 4, R3 is C4-Cioalkanetetrayl, a tetravaient radical of a hexose or a tetravalent radical of a hexitol, or if n is 5, -6 Rs is a pentavalent radical of a hexose or a pentavatent radical of a hexitol, or if n is 6, —ÇH2 CH2— _ _' ' Rais CH2 C CH—o—ch2—ç—CH— or a hexavalent radical of a hexitol.
—CH2 CH— Alkyi having up to 25 carbon atoms is a branched or unbranched radical such as, for example, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbuty], n-pentyl, isopentyl, 1-methylpentyl, 1,3-dimethyibutyl, n-hexyl, 1-methylhexyl, n-heptyl, iso- heptyl, 1,1,3,3-tetramethylbuty!, 1-methylheptyl, 3-methylheptyl, n-octyl, 2-ethylhexyl, 1,1,3- trimethylhexyl, 1,1,3,3-tetramethyipentyl, nonyl, decyl, undecyl, 1-methylundecyl, dodecyl, 1,1,3,3,5,5-hexamethylhexyi, tridecyi, tetradecyl, pentadecyl, hexadecyl, heptadecyi, octa- decyl, eicosyl or docosyl. One of the preferred meanings of Ri, R2 and R6 is for example CrCalkyl, especially CrCioalkyl, for example d-Caalkyl. A particularly preferred meaning of R, and Ra is for example d-Csalkyl, especially Ci-C4aikyl, for example tert-butyl. A parti¬ cularly preferred meaning of R3 is d-Caalkyl, especially Ci-CaakyI, for example CrCsalkyl.
A specifically preferred meaning of R3 is d-Cealkyl, especially d-dalkyi, for example methyl. A particularly preferred meaning of R7 is for example Ca-ds-alkyl, especially C-Ch- alkyl, for example d-d4alky[, A specifically preferred meaning of R7 is dodecyl. A preferred meaning of Ra and R4 is d-C12alkyl, especially d-doalkyl, for example d-Csalkyl. A speci¬ fically preferred meaning of R2 and R4 is d-dalkyi, especially ethyl. A particular meaning of Rb is d-daikyl, especially d-daikyl, for example methyl. A particularly preferred meaning of Rg is for example d-daikyl, especially d-dalkyl, for example methyl. A particularly pre¬ ferred meaning of R,, and R12 is for example d-d2alkyl, especially d-C8aikyl, for example d-dalkyl. A particularly preferred meaning of Rn is for example methyl, ethyl, propyl or tert-butyl, especially tert-butyl and methyl.
d-d2cycloa!kyl is for example cyclopentyl, cyclohexyl, cycloheptyi, cydooctyl, cyclodecyl or cyclododecyl. A preferred meaning of R,, R2, R3 and R6 is for example d-Cgcycloalkyl, es¬ pecially d-dcycloalkyl, for example cyclohexyl.
-7 Cs-Ciacycloaikyloxy is for example cyclopeniyloxy, cyclohexyloxy, cycloheptyioxy, cyclooc- tyloxy, cyclodecyloxy or cyclododecyloxy. A preferred meaning of Rg is for example Cs-Cs- cycloalkyloxy, especially Cg-cycloalkyloxy, for example cyclohexyloxy.
Alkenyl having 2 to 14 carbon atoms is a branched or unbranched radical such as, for example, vinyl, propenyl, 2-butenyl, 3-butenyi, isobutenyi, n-2,4-pentadienyl, 3-methyl-2- butenyl, n-2-octenyl, n-2-dodeceny!, iso-dodecenyl, oleyl, n-2-octadecenyl or n-4-octadece- nyl. A preferred meaning of Rg is propenyl and 2-butenyl. A particularly preferred meaning of Ri2 is for example Ce-Calkenyl, especially Ca-Calkenyl, for example Cio-Ciaalkenyl.
Alkynyl having 3 to 6 carbon atoms is a branched or unbranched radical such as, for example, propynyl (propargyl, —CHa-CCH )," 2-butynyl or 3-butynyl.
Acyt having 1 to 8 carbon atoms is for example formyl, acetyl, propionyl, butanoyl, penta- noyl, hexanoyl, heptanoyl, octanoyl, benzoyl, acryloyl or crotonyi. Preference is given to Ci-Csalkanoyl, Cs-Caaikenoyl or benzoyl, especially acetyl.
CrCgphenylalkyl which is unsubstituted or is substituted on the phenyl radical by Chalky], and which preferably contains 1 to 3, especially 1 or 2, branched or unbranched alkyl group radicals is for example benzyl, a-methylbenzyl, a,a-dimethylbenzyl, 2-phenyIethyl, 2-methyl- benzyl, 3-methylbenzyl, 4-methylbenzyl, 2,4-dimethylbenzyl, 2,6'dimethylbenzyl or4-tert-bu- tylbenzyl. Benzyl is preferred.
Alkenylene having 2 to 18 carbon atoms is a branched or unbranched radical, for example vinylene, methylvinyiene, octenylethylene or dodeoenylethylene. A preferred meaning of Xs is for example Cz-Cealkenylene, especially C2-C4alkenylene, for example vinyiene. A pre¬ ferred meaning of X6 is for example Ca-Ctaalkenylene, especially CCsalkenylene, for example Cz-Cealkenylene.
Naphthyl or phenyl substituted by Cialkyl, and which preferably contains 1 to 3, espe¬ cially 1 or 2, aikyl groups, is for example o-, m- or p-methylphenyi, 2,3-dimethyIphenyl, 2,4- dimethylphenyl, 2,5-dimethylphenyl, 2,6-dimethylphenyl, 3,4-dimethylphenyl, 3,5-dimethyl- phenyl, 2-methyl-6-ethylphenyt, 4-tert-butylphenyl, 2-ethylphenyl, 2,6-diethyiphenyl, 1- methylnaphthyl, 2-methylnaphthyl, 4-methy!naphthyl, 1,6-dimethylnaphthyI or 4-tert-butyl- naphthyl.
Ammonium is NH/.
A mono-, di- or trivalent metal cation is preferably an alkali metal, alkaline earth metal or aluminium cation, for example Na+, K+, Mg++, Ca++ or Al+++.
CrCiaalkylene is a branched or unbranched radical such as, for example, methylene, ethy¬ lene, propylene, tetramethylene, pentamethylen, hexamethylene, heptamethylene, octa- methylene, decamethyiene or dodecamethylene. A preferred meaning of R3 is for example Ca-Ciaalkyiene, especially C2-Cioalkylene, for example C2-Caalkylene. A preferred meaning of Xi is for example Ci-Cealkylene, especially d-Caikylene, for example C2-C4alkylene. A specifically preferred meaning of X, is ethylene or propylene. A preferred meaning of X3 is for example Ct-Csaikylene, especially Cialkylene, for example methylene. A preferred meaning of X5 is for example d-Cealkylene, especially dalkylene, for example ethylene.
A preferred meaning of X6 is d-Cisalkylene, especially d-daikylene, for example d-C*- alkylene, especially methylene.
C2-Ci8alkylene interrupted by oxygen or sulfur can be interrupted one or more times and is for example -CHa-O-CHz-, -CHrS-CH2-, -CHz-O-ChkCHs-O-CHr, -CHaCHa-O-CHaCHz-O-CHaCHa-.-CHrfO-CHaCHa-JaO-CHa-, -CHaCHa-tO-CHaCHa-JaO-CHaCHa-.-CHa-P-CHaCHraaCHr.-CHaCHrO-CHaCHa-, -CHaCHa-tO-CHaCHa-JsO-CHaCHa- or -CHaCHa-S-CHaCHa-. A preferred meaning of Rg is, for example, Ca-doalkylene interrupted by oxygen or sulfur, especially d-doalky!ene inter¬ rupted by oxygen, for example d-Caalkylene interrupted by oxygen. A preferred meaning of X, is for example d-dalkyiene interrupted by oxygen or sulfur, especially Ca-Cealkylene interrupted by sulfur, for example Ca-dalkyiene interrupted by sulfur. A particularly pre¬ ferred meaning of Xi is -CHa-S-CHa-. A preferred meaning of Xe is for example Ca-Calky- lene interrupted by oxygen, especially Ca-dalkylen interrupted by oxygen, for example -CH2CH2-O-CH2CH2-.
Phenylene is for example 1,4-phenylene, 1,3-phenylene or 1,2-phenylene. 1,2-Phenylene is preferred.
If R3 for n = 1 to 6 is an n-valent radical of a hexose, this radical is derived, for example, from allose, altrose, glucose, mannose, gulose, idose, galactose or talose; in other words to obtain the corresponding compounds of the formula I it is necessary to replace one, two, three, four, five or six OH groups by the ester group E-1 (E-1) in which R-t, R2, m and X are as defined above. For example, for n = 5 R3 can be a group -o rV0' If R3 is the n-valent radical of a hexitol, then the corresponding compounds of formula I are obtained by replacing n OH groups in the hexitols by the abovementioned ester group E-1.
As hexavalent radical of a hexitol R3 can for example be O I —O—CH—CH—CH—CH—CH—CH2—O- . This group is derived from D-sorbitoi.
OOO ! I I I ' Alkanetetray! having 4 to 10 carbon atoms is for example —CHj— ç—CH2— CH£- (pentaerythrityl), I , I , II y yh — CH—CH—CH—CH— ' —CHrCH2-CH-CH-CH— ' II I I or —CH2-CH2-CH-CH-CH2-CH2— ' — C-C-CH-CHg-CH-Cf-CH— 0r -CHrCHs-CH-CHfCHs-CH-CHi-CHg- Pentaerythmyl is preferred.
Interest attaches to carrier-bound compounds of the formula I, II and/or III.
Preference is given to carrier-bound compounds of the formula I, II and/or III, in which R! is C1-C12a[kyl, Cs-Cscycloalkyl, phenyl or CT-Cgphenylalkyl, Rz is Ci-Calkyl, Cs-Cacycloalkyl, phenyl or Cy-Caphenylalkyl, R4 is hydrogen, Ci-CiaalkyI, phenyl which is unsubstituted or is substituted by Chalky!; ,,r+ ammonium or L , r Rs is hydrogen, CVCalkyl, phenyl which is unsubstituted or is substituted by C-Calkyl; r+ r ammonium or M R6 is hydrogen, d-Ctsalkyl, Cs-Cscycioalkyl, Cr-Cgphenylalkyl, ammonium or — , R7 is Cs-dealkyl, phenyl which is unsubstituted or is substituted by C,-C4alkyl; or is —(CK,)—C02R6 , Ra is CrC4alkyl, M is an alkali metal, alkaline earth metal or aluminium, Xt is a direct bond, C,-C6aikylene, C2-C6alkylene which is interrupted by oxygen or sulfur; or CH CH— / v .
// \ J.
is j or HO ( J ç—CH— where and Ra are as defined R8 CH3 above, Xa is oxygen or -NH-, X3 is Ci-Csalkylene, m is 1 or 2, n is an integer from the range from 1 to 4, pis 1 or 2, q is 1 or 2, r is 1, 2 or 3, and if n is 1, R3 is hydrogen, C,-Ci8alkyi, C5-CaCycloaIkyl, phenyl which is unsubstituted or is substituted by d-alkyl; and if Xa is oxygen, R3 is additionally ammonium or ML+ , or r if n is 2, Rs is C2-Cioalkylene, GrCioalkylene which is interrupted by oxygen or sulfur, or if n is 3, Ra is — ch2—CH—CHj .
ïf n is 4, R3 is CCsalkanetetrayl.
or Particular preference is given to carrier-bound compounds of the formula I, II and/or III, in which Fti is Ci-Cioalkyl, Cs-Cecycloaikyl, phenyl or benzyl, R2 is CrCioalkyl, Cs-Cecycloalkyl, phenyl or benzyl, R4 is hydrogen, d-doalkyl, phenyl, ammonium or ML+ , r Rs is hydrogen, C-Cioalkyl, phenyl, ammonium or M , R6 is hydrogen, C-Cioalkyl, C5-C6cycloaJkyi, benzyl, ammonium or — , R? is CCualkyl, phenyl or —<CH2)q—C02R6 , Rs is methyl, M is an alkali metal, alkaline earth metal or aluminium, Xi is a direct bond, dalkylene, C2-C6alkylene which is interrupted by sulfur or is R, CH CH- Re ?—CH2— , where Rt and Rz are as defined CH3 above, X2 is oxygen, X3 is C1-C4alkylene, m is 1 or 2, n is an integer from the range from 1 to 4, pis 2, qis2r r is 1, 2 or 3, and if n is 1, Ra is hydrogen, d-CiaalkyI, Cs-Cecycioaikyl, phenyl, ammonium or iiL , or if n is 2, R3 is C2-Csaikylene, CCioalkylene which is interrupted by oxygen, or if n is 3, R3 is —cHj—CH—CH2 . or if n is 4, RaiS —CH-Ç—CK— CH2- Particular preference is likewise given to carrier-bound compounds of the formula I, II and/or III, in which Ri is tert-butyl, Ra is Ci-C4alkyl and is ortho to the OH group, and m is 1.
Special interest attaches to carrier-bound compounds of the formula IV, in which R9 is hydrogen, methyl, Cs-Cizalkoxy, cyclohexyloxy or benzyl.
Also preferred are carrier-bound compounds of the formula IV, in which Re is hydrogen, CrCwalky!, Cs-Cecycloalkylj benzyl, ammonium or — , 2Î77654 Rs is hydrogen, Chalky!, O", OH, NO, C4-C1sa[koxy, Cs-CyCydoalkoxy, C2-C6acyl, C7-C9- phenylalkyl which is unsubstituted or is substituted on the phenyl ring by Ci-C+alkyi, O O Rio is C—Xg—COOR6 , Cl-—CH CH2 Or —Xg—COOR6 , Rn is hydrogen or Ci-Calky!, R12 is Ci-Calky! or Cs-Calkenyl, Ris is hydrogen or methyl, M is an alkali metal or an alkaline earth metal, X4 is oxygen or-NRti-, X5 is a direct bond, Ct-C6a[kylene, Ca-Cealkenylene, CH—R12 , — /J— , —\~- or —(/-—fy.
X6 is Ci-Calkylene, C2-Ci2alkenylene, Ca-Czalkylene which is interrupted by oxygen; or is phenylene, and ris 1 or 2.
Also preferred are carrier-bound compounds of the formula IV, in which Re is hydrogen, CrCealkyl, cyclohexyl or — , Rg is hydrogen, Calkyl, CCisalkoxy, Cs-Cycycioalkoxy, CVCeacyl or CrCaphenylalkyi, o o Rio is C—Xg—COOR6 , CH—CH CHj or —Xg— COOR6 , Rn is hydrogen or Ci-Csaikyl, Ri2 is CrCaalkyl or C6-C,4alkeny[, R13 is hydrogen or methyl, M is an alkali metal or alkaline earth metal, X4 is oxygen or -NRn-, R13 or 15- Xs is a direct bond, Ci-C6alky!ene, XCH—R12 , —\_}~R* . —(!/ -p-,. .. : .. ..
Xe is d-Csalkylene, Ca-Cealkenylene, Ca-Csalkylene which is interrupted by oxygen; or is phenylene, and ris 1 or 2.
Particuiar interest attaches to carrier-bound compounds of the formula I, II, III and/or IV, in which Ri is Ct-Ceaikyl, cyclohexyl or phenyl, R2 is Ci-Cealkyl, cyclohexyl or phenyl and is ortho to the OH group, R3 is hydrogen, d-Csalkyl, cyclohexyl or Ml+ , r+ R4 is hydrogen, Ci-Caalkyl or HL , r <r+ R5 is hydrogen, d-Csalkyl or MJ , r Re is hydrogen, d-Caaikyl, cyclohexyl or — , R? is C8-d4alkyl or —(CH2)q—co2R< '6 > Rs is methyl R9 is hydrogen, d-dalkyl, d-daalkoxy, Cs-Crcycloalkoxy, acetyl or Cy-dphenyialkyl, O O Rio IS C—Xs—COOR6 , CH—CH CH2 or —X-COORe , Rn is hydrogen or d-dalkyl, R12 is d-Cuaikenyl, R13 Is hydrogen or methyl, M is an alkali metai or alkaline earth metal, Xi is C2-C4alkylene, Caalkylene which is interrupted by sulfur; or is X2 is oxygen, X3 is Ci-C4alkylene, X4 is oxygen or -NRn-, —CH2—CH- Ra X5 is a direct bond, Calkylene , CH—R,, , — /}—R« , —{ J— % or -R12 , -Jx« , —Çjn» Xs is C1-C4alkylene or phenyiene, m is 1 or 2, nis 1, pis 2, q is 2, and r is 1 or 2.
Special interest attaches to carrier-bound compounds of the formula I, II, ill and/or IV, in which R, is tert-butyl, R2 is Ci-C4alky[ and is ortho to an OH group, R3 is hydrogen or Ci-C4alkyl, R4 is hydrogen, Calkyl or mJ" , r Rs is hydrogen, Ctalkyl or M , r Re is hydrogen, R7 is Cto-Ciaalkyl, R9 is hydrogen, methyl, Cs-Calkoxy, cyclohexyloxy or benzyl, 17- O O Rio is C—Xg—COOR6 , CH-CH CH2 or —Xg—COOR6 , Ru is hydrogen, R12 is Cio-C12alkenyl, M is calcium, Xt is ethylene or ethylene which is interrupted by sulfur, X2 is oxygen, X3 is methylene, X4 is oxygen or -NRn-, X5 is ethylene or CH—R12 , Xe is methyiene, m is 1, n is 1, p is 2, and ris 2.
Very particular preference is given to carrier-bound compounds of the formula la, !b, le, lia, lib, Ilia and I Va toi Vn.
(la) HO—(Z y-cHa-CH-COOH HO—-f —CH-CH-COOH {lb} 18- (lc) CH2-S-CH—COOH H3CV CH3 O CHj-P—OH I OH H3C CH3 (lia) (lib) CH3 H3C HO H,/ "CH3 CH—P—OH 2 I OCH2CH3 C12H2— S—CHg— CH—COOH (|[la) CH, H—N V- H3C CH, O II O—C—CH—CH—COOH CH, H3C—NJ)- CH, O il O—C—CHj— CHj— COOH (IVa) (!Vb) CH3 HaCJ HacV O I! H—N )-NH-C—CH-C—COOH CH, CH, H3C—N,)- O II NH-C—CHj-CHj-COOH CH, (IVc) <IVd) Cf-L H—N )— O—CH — COOH H3C CH, (IVe) CH, H—N V-NH-CH—COOH CH, (IVf) CH3 H—N VO-CK—CH—CH£ CH, (ivg) CH3 H3CJ H3C—N Vo-CH—CH—i 2 « ' CH2 CH, (IVh) CH, CH, (IVi) 0-CH2—CH—Ch C8H170-~N Vo-CH—CH—CH2 (IVk) CH, H3C--L O Benzyl-O—N Vo-CH—CH—CH£ CH, (IVm) O IE NH-C—CH—CH—CH=CH—CH-(CH2)rCH3 COOH (IVn) Particular preference is given to carrier-bound compounds of the formula I, II, III and/or IV in which the carrier is a filler or a pigment.
The pigments can be inorganic or organic pigments. Examples of particularly preferred inor¬ ganic pigments are iron oxides, titanium oxides and zinc oxides. Examples of particularly preferred organic pigments are urea/formaldehyde adducts and aminoanthraquinones.
The preferred fillers are described in H.S. Katz/J.V. Milewski (eds.), Handbook of Fillers for Plastics, Van Nostrand Reinhold Publishers, New York 1987; in R. Gâchter/H. Mûller (eds.), Plastics Additives Handbook, 3rd éd., pages 525-591, Hanser Publishers, Munich 1990; and Ullmann's Encyclopedia of industrial Chemistry, Vol. A20, pages 494-497, 5th edition, VCH Verlagsgesellschaft, Weinheim 1987.
Special preference is given to acidic-reactive fillers which are able to enter, with the com¬ pounds of the formula I, II, 111 and/or IV, into an acid-base reaction or an adsorption reaction.
Preference is also given to fillers which are able to react with epoxides and to form chemical bonds.
The novel carrier-bound compounds of the formula I, II, III and/or IV are also advantageous in that the compounds of the formula I, II, ill and/or IV adhere well to the carrier and cannot very easily be extracted with, for example, an alcohol or hydrocarbon solvent.
Particularly preferred compounds of the formula I, II, III and/or IV are those whose molecule carries at least one free carboxylic acid, one free phosphonic acid or a terminal epoxide.
Preferred fillers are those based on oxide or hydroxide, silicate or carbonate.
Oxide- or hydroxide-based fillers are for example aluminium oxide, magnesium oxide, titani¬ um oxide, silicon oxide, zinc oxide, aluminium hydroxide, magnesium hydroxide or zinc hydroxide.
Silicate-based fillers are for example quartz flour, kieselguhr, talc, aluminium silicate, mag¬ nesium silicate, calcium silicate or zeolite.
Carbonate-based fillers are for example calcium carbonate, magnesium carbonate or dolo¬ mite and their various mineralogical forms, for example calcite, chalk or aragonite.
Very particular preference is given to carrier-bound compounds of the formula I, II, Hi and/or IV in which the carrier is an oxide-, hydroxide-, silicate- or carbonate-based filler.
Of specific interest also are carrier-bound compounds of the formula I, II, III and/or IV in which the carrier is aluminium oxide, magnesium oxide, titanium oxide, silicon oxide, talc, caicium carbonate or dolomite.
Special preference is given to carrier-bound compounds of the formula la, lb, le, lia, lib, Ilia and IVa to IVn in which the carrier is calcium carbonate, titanium oxide or silicon oxide.
The general term "carrier-bound compounds of the formula I, II, III and/or IV" is also to be understood, for example, as including "compounds of the formula I, II, III and/or IV absorbed or adsorbed on a carrier or a support material".
The binding or fixing of organic compounds to carriers, or the coating of fillers with organic compounds, is known and is described, for example, in US-A-4 283 316 (column 3).
The novel carrier-bound compounds of the formula i, II, III and/or IV can, for example, be prepared as follows: when not already liquid, the compounds of the formula I, II, Eli and/or IV are dissolved in an organic solvent, for example ketones, esters, alcohols or hydrocarbons, particular examples being acetone, ethyl acetate orethanol. The carrier is then added with stirring to the clear solution. The solvent is then removed by distillation, preferably under a 2Î77654 slight vacuum and in a temperature range from 20 to 200oC. The dry residue provides the carrier-bound compounds of the formula I, II, III and/or IV according to the invention in quan¬ titative yield.
The solvent employed is used in an excess which is expediently from 2 to 20 times, prefe¬ rably from 4 to 15 times and, in particular, 10 times the amount by weight of the compound of formula I, II, III and/or IV employed.
Where the compounds of the formula I, II, III and/or IV are acids, for example carboxylic acids or phosphonic acids, these compounds can also be dissolved in an aqueous basic solvent, for example dilute alkali metal hydroxide, alkaline earth metal hydroxide or ammo¬ nia solution, especially sodium hydroxide solution. This solution is preferably added at slightly elevated temperature to an aqueous suspension of the filler. A preferred reaction temperature is between 30 and 100oC, in particular between 30 and 80oC, for example bet¬ ween 40 and 700C. The carrier-bound compounds of the formula I, II, III and/or IV are prefe¬ rably isolated by filtering the reaction mixture and then drying the residue under vacuum.
The novel carrier-bound compounds of the formula I, II, III and/or IV are expediently pre¬ pared without solvent. In this case the compounds of the formula I, li, III and/or IV are sub¬ jected to intensive stirring with the carrier in a mixer until the mixture has reached a tempe¬ rature which is about 20oC above the melting point of the carrier. Using, for example, cal¬ cium carbonate as carrier, temperatures of about 1500C are reached in this case. The coarser the carrier, the more rapidly the coating temperature is reached by means of the frictional heat. Thus, for example, the temperature of calcium carbonate (Millicarb®) rises to about 100oC in 8 minutes at a stirring speed of about 4000 revolutions per minute. If the desired temperature is not reached in this way with a different carrier, the carrier is pre¬ heated in a drying oven, for example, prior to mixing it with the compounds of the formula I, II, III and/or IV.
The novel carrier-bound compounds of the formula I, II, HI and/or IV comprise the com¬ pounds of the formula I, El, 111 and/or IV in a quantity of for example from 0.01 to 10% by weight, preferably from 0.01 to 5% by weight, for example from 0.10 to 2% by weight, rela¬ tive to the weight of the carrier.
23- The compounds of the formula I, II, III and IV can be fixed or bounded to the carrier either individually or as a mixture of different compounds of the formula 1,11,11! and/or IV. The carriers to be coated, especially fillers, can likewise be employed in pure form or as mix¬ tures of different carriers.
The compounds of the formula I, II and/or III are known and some of them are commercially available, or can be prepared by analogy with the method described in T.H. Coffield et ai., J. Amer. Chem. Soc. 7â, 5019 (1957); US-A-3 270 091; G. Scott et al., Polymer Degra¬ dation and Stability 4, 279 (1982) and EP-A-413 562, Some of the compounds of the formula IV are known and are some are commercially avai¬ lable or can be prepared by analogy with the method described in EP-A-0 634 449.
The novel carrier-bound compounds of the formula I, II, III and/or IV are suitable as fillers and for stabilizing organic materials against oxidative, thermal and/or light-induced degrada¬ tion.
Examples of such materials are:
1. Polymers of monoolefins and dtolefins, for example polypropylene, polyisobutylene, polybut-1 -ene, poly-4-methylpent-1-ene, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbomene, polyethylene (which optionally can be crosslinked), for example high density polyethylene (HOPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene (HDPE-UHMW), medium density polyethylene (MDPE), 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, prefe¬ rably polyethylene and polypropylene, can be prepared by different, and especially by the following, methods:
2Î77654 24- 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, Vlb or VIM 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 %- or a-coordinated.
These metal complexes may be in the free form or fixed on substrates, typically on activated magnesium chloride, titanium(IÎI) 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 la, lia and/or Ella 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), metailocene 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 (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene/but-1-ene copolymers, propylene/isobutylene copolymers, ethylene/buM-ene copolymers, ethylene/hexene copo¬ lymers, ethylene/methylpentene copolymers, ethylene/heptene copolymers, ethylene/oc- tene copolymers, propylene/butadiene copolymers, isobutylene/isoprene copolymers, ethy- tene/alkyl acrylate copolymers, ethylene/alkyl methacrylate copolymers, ethyiene/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-norbornene; and mixtures of such copolymers with one another and with polymers mentioned in 1) above, for example polypropylene/ethylene-propylene copolymers, LDPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ethylene-acrylic acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alter- nating or random polyalkylene/carbon monoxide copolymer and mixtures thereof with other polymers, for example polyamides.
4. Hydrocarbon resins {for example C5-C9) including hydrogenated modifications thereof (e.g. tackifiers) and mixtures of polyaikylenes and starch.
5. Polystyrene, poly(p-methylstyrene), poly{a-methylstyrene).
6. Copolymers of styrene or a-m ethyl sty rene with dienes or acrylic derivatives, for example styrene/butadiene, styrene/acrylonitrile, styrene/alkyl methacrylate, styrene/butadiene/alkyl acrylate, styrene/butadiene/alkyl methacrylate, styrene/maleic anhydride, styrene/acrylo- nitrile/methyl acrylate; mixtures of high impact strength of styrene copolymers and another polymer, for example a polyacrylate, a diene polymer or an ethylene/propylene/diene terpo- lymer; and block copolymers of styrene such as styrene/butadiene/styrene, styrene/iso- prene/styrene, styrene/ethylene/butyiene/styrene or styrene/ethylene/propylene/ styrene.
7. Graft copolymers of styrene or a-methylstyrene, for example styrene on polybutadiene, styrene on polybutadiene-styrene or polybutadiene-acrylonitrile copolymers; styrene and acryionitrile (or methacryionitrile) on polybutadiene; styrene, acrylonitrile and methyl meth¬ acrylate on polybutadiene; styrene and maleic anhydride on polybutadiene; styrene, acryio¬ nitrile and maleic anhydride or maleimide on polybutadiene; styrene and maleimide on poly¬ butadiene; styrene and alkyl acrylates or methacrylates on polybutadiene; styrene and acrylonitrile on ethylene/propylene/diene terpolymers; styrene and acrylonitrile on polyalkyi acrylates or polyalkyi methacrylates, styrene and acrylonitrile on acrylate/butadiene copoly¬ mers, as wefi as mixtures thereof with the copolymers listed under 6), for example the copolymer mixtures known as ABS, MBS, ASA or AES polymers.
8. Halogen-containing polymers such as poiychloroprene, chlorinated rubbers, chlorinated and brominated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfo- chiorinated polyethylene, copolymers of ethylene and chlorinated ethylene, epichlorohydrin homo- and copolymers, especially polymers of halogen-containing vinyl compounds, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylidene fluo- ride, as well as copolymers thereof such as vinyl chloride/vinylidene chloride, vinyl chlo¬ ride/vinyl acetate or vinylidene chioride/vinyl acetate copolymers.
9. Polymers derived from a,p-unsaturated acids and derivatives thereof such as polyacry- lates and polymethacrylates; polymethyl methacryiates, polyacrylamides and polyacryloni- triles, impact-modified with butyl acrylate.
10. Copolymers of the monomers mentioned under 9) with each other or with other unsatu¬ rated monomers, for example acrylonitriie/ butadiene copolymer, acrylonitrile/alkyl acrylate copolymers, acrylonitrile/alkoxyalkyl acrylate or acrylonitrile/vinyl halide copolymers or acrylonitriie/ alkyl methacrylate/butadiene terpolymers.
11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or acetals thereof, for example polyvinyl alcohol, polyvinyl acetate, polyvinyl stéarate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallyl melamine; as well as their copolymers with olefins mentioned in 1) above.
12. Homopoiymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethy¬ lene oxide, polypropylene oxide or copolymers thereof with bisglycidyi ethers.
13. Polyacetals such as polyoxymethylene and those polyoxymethylenes which contain ethylene oxide as a comonomer; polyacetals modified with thermoplastic polyurethanes, acrylates or MBS.
14. Polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with styrene polymers or polyamides.
15. Polyurethanes derived from hydroxyl-terminated polyethers, polyesters or polybuta- dienes on the one hand and aliphatic or aromatic polyisocyanates on the other, as well as precursors thereof.
16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and/or from aminocarboxylic acids or the corresponding lactams, for example polyamide 4, poly- polyamides starting from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and isophthaiic or/and terephthalic acid and with or without an elastomer as modifier, for example poly-214p4,-trimethylhexamethylene terephthalamide or poly-m-phenylene isophthaiamide; and also block copolymers of the aforementioned poly- amides with polyolefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, e.g. with polyethylene glycol, polypropylene glycol or poly- tetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and polyamides condensed during processing (RIM polyamide systems).
17. Poiyureas, polyimides, polyamide-imides, polyetherimids, polyester! m ids, polyhydanto- ins and polybenzimidazoles.
18. Polyesters derived from dicarboxylic acids and diols and/or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutyene terephthalate, poly-1,4-dimethylolcyclohexane terephthalate and polyhydroxybenzoates, as well as block copolyether esters derived from hydroxyl-termtnated polyethers; and also poly¬ esters modified with polycarbonates or MBS.
19. Polycarbonates and polyester carbonates.
20. Polysulfones, polyethersulfones and polyether ketones.
21. Crosslinked polymers derived from aldehydes on the one hand and phenols, ureas and melamines on the other hand, such as phenol/formaldehyde resins, urea/formaldehyde re¬ sins and melamine/fomnaidehyde resins.
22. Drying and non-drying aikyd resins.
23. Unsaturated polyester resins derived from copolyesters of saturated and unsaturated dicarboxylic acids with polyhydric alcohols and vinyl compounds as crosslinking agents, and also halogen-containing modifications thereof of low flammability.
24. Crosslinkable acrylic resins derived from substituted acrylates, for example epoxy acry- lates, urethane acrylates or polyester acrylates.
28- 25. Aikyd resins, polyester resins and acrylate resins crosslinked with melamine resins, urea resins, isocyanates, isocyanurates, polyisocyanates or epoxy resins.
26. Crosslinked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic or aromatic glycidyl compounds, e.g. products of diglycidyl ethers of bisphenol A and bisphenol F, which are crosslinked with customary hardeners such as anhydrides or amines, with or with¬ out accelerators.
27. Natural polymers such as cellulose, rubber, gelatin and chemically modified homolo¬ gous derivatives thereof, for example cellulose acetates, cellulose propionates and cellu¬ lose butyrates, or the cellulose ethers such as methyl cellulose; as well as rosins and their derivatives.
28. Blends of the aforementioned polymers (polyblends), for example PP/EPDM, Poly- amide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS, PBTP/ABS, PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR, PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6 and copolymers, PA/HDPE, PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC.
29. Naturally occurring and synthetic organic materials which are pure monomeric com¬ pounds or mixtures of such compounds, for example mineral oils, animal and vegetable fats, oil and waxes, or oils, fats and waxes based on synthetic esters (e.g. phthalates, adi- pates, phosphates or trimellitates) and also mixtures of synthetic esters with mineral oils in any weight ratios, typically those used as spinning compositions, as well as aqueous emul¬ sions of such materials.
30. Aqueous emulsions of natural or synthetic rubber, e.g. natural latex or latices of carbo- xylated styrene/butadiene copolymers.
31. Petroleum and coal distillation residues, for example asphalt, bitumen or bituminous materials for road coverings.
The invention therefore also provides compositions comprising (a) an organic material which is subject to oxidative, thermal or iight-induced degradation and (b) at least one carrier-bound compound of the formula I, II, 111 and/or IV.
The organic materials to be protected are preferably natural, semisynthetic or, preferably, synthetic polymers. Particularly preferred polymers are thermoplastic polymers, especially PVC or polyolefins, in particular polyethylene and polypropylene.
The organic materials to be protected are also preferably asphalt, bitumen or bituminous materials for road coverings, and natural or synthetic polymers suitable for papermaking.
Particular emphasis should be placed on the action of the novel carrier-bound compounds of the formula I, il, III and/or IV against thermal and oxidative degradation, especially under thermal loads as occur in the processing of thermoplastics. The novel carrier-bound com¬ pounds of the formula I, 11, III and/or IV are therefore outstandingly suitable for use as pro¬ cessing stabilizers.
The carrier-bound compounds of the formula I, It, HI and/or IV are preferably added to the material to be stabilized in quantities of from 1 to 50%, for example from 5 to 40%, prefe¬ rably from 5 to 30%, in particular from 5 to 25%, based on the weight of the organic mate¬ rial.
In addition to the novel carrier-bound compounds of the formula I, It, 111 and/or IV, the novel compositions can comprise further co-stabilizers (additives), for example the following:
1. Antioxidants 1.1. Alkylated monophenois, for example 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4I6- dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert- butyl-4-isobutylpheno!, 2l6-dicyclopentyl-4-methylphenol> 2-(a-methylcyclohexyl)-416-di- methylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyi-4- methoxymethylphenol, nonylphenols which are linear or branched in the side chains, for example, 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1'-methylundec-1'-yl)phenol] 2,4-di- methyl-6-(1 '-methylheptadec-l '-yl}phenol, 2,4-dimethyl-6-(1 '-methyltridec-1 '-yljphenol and mixtures thereof.
1.2. Alkylthiomethylphenols. for example 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-di- octylthiomethy[-6-methylphenol, 2,4-dtoctylthiomethyl-6-ethylphenol, 2,6-dhdodecylthio- methyl-4- nonylphenol.
1.3. Hvdroquinones and alkylated hydroquinones. for example 2,6-di-tert-butyl-4-methoxy- phenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octa- decyloxyphenol, 2,6-di-tert-butylhydroquinone, 2)5-d!-tert-butyl-4-hydroxyanisole, 3,5-di-teit- butyi-4-hydroxyanïsole, S.S-di-tert-butyl-hydroxyphenyl stéarate, bis-(3,5-di-tert-butyl-4- hydroxyphenyl) adipate.
1.4. Tocopherols, for example a-tocopheroi, -tocopherol, -tocopherol, 5-tocopherol and mixtures thereof (Vitamin E).
1.5. Hydroxylated thiodiphenyl ethers, for example 2,2,-ihiobis(6-tert-butyl-4-methylphenol), 2,2,-thiobis(4-octyiphenol), 4,4,-thiobis(6-tert-butyl-3-methylphenol), 4,4'-thiobis(6-tert-butyl- 2-methylphenol),4I4,-thiobis-(3,6-di-sec-amylphenoi), 4,4,-bis-(2,6-dimethy!-4-hydroxyphe- nyl) disulfide.
1.8. Alkylidenebisphenois. for example 2)2'-methylenebis(6-tert-butyl-4-methylphenol)] 2,2'- methylenebis(6-tert-butyl-4-ethy[phenoî), 2,2'-methylenebis[4-methyl-6-(a-methylcyc!o- hexyljphenol], 2,2'-methylenebis(4-methyI-6-cyclohexylpheno[), 2,2'-methylenebis(6-nonyl- 4-methylphenol), 2,2l-methyienebts{4,6-di-tert-butylphenol), 2,2'-ethylidenebis(416-di-tert- butylphenol), 2,2,-ethylidenebis(6-tert-butyl-4-isobutylphenoI), 2I2,-methylenebis[6-(oc- methylbenzyl)-4-nonylphenol], 2,2'-methylenebis[6-{a,a-dimethylben2yl)-4-nonyIphenol], 4>4'-methylenebis{2,6-di-tert-butylphenol), 4,4'-methylenebis(6-tert-butyl-2-methylphenol)) 1,1 -bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-b!s(3-tert-butyl-5-methyl-2- hydroxybenzyi)-4-methylphenol, 1,1,3-tns(5-tert-butyl-4-hydroxy-2-rnethy[phenyl)butane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methyl-phenyl)-3-n-dodecylmercaptobutane, ethylene glycol bisIS.S-bisfS'-tert-butyM'-hydroxyphenyObutyrate], bis(3-tert-butyl-4-hydroxy-5-methyl- phenyl)dicyclopentadiene, bis-fS'-tert-butyl'-hydroxy-S'-methyibenzyO-e-tert-butyl- methy[phenyl]terephtha!ate, 1 l1-bis-(3,5-dimethyl-2-hydroxyphenyl)butane1 2,2-bis-(3,5-di- tert-butyl-4-hydroxyphenyl)propane, 2,2-bis-(5-tert-butyl-4-hydroxy2-methylphenyl)-4-n- dodecylmercaptobutane, 1,1,5,5-tetra-(5-tert-butyl-4-hydroxy2-methylphenyl)pentane.
1.7. O-, N- and S-benzvl compounds, for example S.S.S'.SMetra-tert-butyl'-dihydroxydi- benzyl ether, octadecyi-4-hydroxy-3,5-dimethylbenzylrnercaptoacetate, tridecyl-4-hydroxy- 3,5-di-tert-butylbenzylmercaptoacetate, trtsfS.S-di-tert-butyl-hydroxybenzyOamine, bis(4- tert-butyi-3-hydroxy-2,6-dimethylbenzyl)dithioterephtha[ate, bistS.S-di-tert-butyl-hydroxy- benzyl)sulfide, isooctyl-3,5di-tert-butyI-4-hydroxybenzylmercaptoacetate.
1.8. Hvdroxvbenzvlated malonates. for example dioctadecyl-2,2-bis-(3,5-di-tert-biityl-2- hydroxybenzyl)-malonate, di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methy]benzyl)-maionate, di-dodecylmercaptoethyi-bis-tS.S-di-tert-butyl-hydroxybenzyOmalonate, bis[4-(1,1,3,3- tetramethylbu!yl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.
1.9. Aromatic hvdroxvbenzvl compounds, for example 1,3,5-tris-(3,5-di-tert-buty[-4-hydroxy- benzyO.S-trimethylbenzene, l-bistS-di-tert-butyl-hydroxybenzyO.S.S.G-tetra- methylbenzene, 2I4,6-trts(3,5-di-tert-butyl-4-hydroxybenzyl)phenoI.
1.10. Triazine Compounds, for example 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4- hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(315-di-tert-butyl-4-hydroxyanilino)- 1,3,5-triazine, 2-octylmercapto-4,6-bis{3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, I.S.S-tris-fS.S-di-tert-butyW- hydroxybenzyljisocyanurate, 1,3,5-tris(4-tert-butyi-3-hydroxy-2,6-dimethylbenzyi)iso- cyanurate, 2,4l6-tris(3l5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 1,3,5-tris{3,5-di- tert-butyi-4-hydroxyphenylpropionyl)-hexahydro-1,3,5-triazîne, 1,3,5-tris(3,5-dicyc[ohexyl-4- hyd roxybenzyl ) isocyanu rate.
1.11. Benzylphosphonates. for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphospho- nate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl3,5-di-tert-butyl-4- hydroxybenzylphosphonate!dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, the calcium salt of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.
32 1.12. Acylaminophenols, for example 4-hydroxylauranilide, 4-hyciroxystearanilicle, octyl N- (3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.
1.13. Esters of |3-(3.5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- or poiyhydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9- nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethy- lene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyi) isocyanurate, N.N'-bis- (hydroxyethyOoxamfde, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanedioi, tri- methylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-tiioxabicycIo[2.2.2]octane.
1.14. Esters of g-(5-tert-butyi-4-hydroxy-3-methy!phenyl)propionicacid with mono- or poiy¬ hydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexane¬ diol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene gly¬ col, diethylene glycol, triethylene glycol, pentaerythritol, tris{hydroxyethyl) isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanedioi, trimethyloip ropane, 4-hydroxym ethyI-1 -phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.15. Esters of p-f3.5-dicvclohexvl-4-hvdroxvphenvnpropionicacid with mono- or poiyhydric alcohols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanedioI, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethyiene glycol, pentaerythritol, tris{hydroxyethyl)!Socyanurate, N.N'-bisfhydroxy- ethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanedioi, trimethylolpro- pane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.16. Esters of 3.5-di-tert-butyl-4-hydroxyphenyl acetic add with mono- or poiyhydric alco¬ hols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyi)- oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanedioi, trimethyiolprpane, 4- hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.17. Amides of ft-f3.5-di-tert-butvl-4-hvdroxvphenvnpropionic acid e.g. N,N'-bIs{3,5-di-tert-- butyW-hydroxyphenylpropionyOhexamethylenediamine, N,N'-bis(3,5-di-tert-butyl-4-hydroxy- 33' phenylpropionyl)trimethylenediamine, N,N'-bis{3,5-di-tert-butyl-4-hydro>cyphenylpropionyl)- hydrazine.
1.18. Ascorbic acid (vitamin Cï 1.19. Aminic antioxidants, for example N.N'-di-isopropyl-p-phenylenediamine, N.N'-di-sec- butyl-p-phenyienediamine, N,N'-bis(1 -dimethylpentyij-p-phenylenediamine, N.N'-bisO- ethyl-3-methylpenty])-p-phenyienediamine, N,N'-bis(1-methyiheptyl)-p-phenylenediamine, N.N'-dicyclohexyl-p-phenyienediamine, N.N'-diphenyl-p-phenylenediamine, N1N'-bis{2-naph- thyl)-p-phenylenediamine, N-isoprapyl-N'-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)- N'-phenyl-p-phenylenediamine, N-{1-methylheptyl)-N'-phenyl-p-phenylenediamine, N- cyclohexyl-N'-phenyl-p-phenylenediamine, 4-(p-toluenesulfamoyl)diphenylamine, N,N'-di- methyl-N,N'-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-iso- propoxydiphenylamine, N-phenyl-1 -naphthylamîne, N-(4-tert-octyiphenyI)-1 -naphthylamine, N-phenyi-2-naphthyiamine, octylated diphenylamine, for example p,p'-di"tert-octyldipheny[- amine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylamino-phenol, 4-dodeca- noylaminophenol, 4-octadecanoyIaminophenol, bis{4-methoxypheny[)amine, 2,6-di-tert-bu- tyl-4-dimethylaminomethylphenol, a'-dtaminodiphenyimethane, 4l4,-diaminodiphenyi- methane, N.N'.N'-tetramethyl'-diaminodiphenylmethane, 1,2-bis[(2-methyiphenyi)- aminojethane, l-bistphenylaminojpropane, (o-toiy[)biguanide, Bis-fl'.S'-dimethylbutyl)- phenyl]amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and dialkylated tert-butyl/tert-octyldiphenyiamines, a mixture of mono- and dialkylated nonyldiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialky¬ lated isopropyl/isohexyldiphenyiamines, a mixture of mono- und dialkylated tert-butyldiphe- nylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine, phenothiazine, a mixture of mono- und dialkylated tert-butyl/tert-octylphenothiazines, a mixture of mono- und dialkylated tert-octyl-phenothiazines, N-allylphenothiazin, NtN,N',N'-tetraphenyl-1 -diaminobut-ene, N,N-bis(2T2-I6,6-tetramethyl-piperid-4-yI-hexamethylenediamineI bis(2,2,6I6-tetramethylpipe- rid-4-yl)sebacatet 2,2,6,6-tetramethyipiperid(n-4-one, 2,216,6-tetramethyipipendfn-4-ol.
g. IJV absorbers nd light gtabiligers 2.1. 2-(2'-Hydroxyphenvl)benzotriazoles, for example 2-(2'-hydroxy-5'-methylphenyl)benzo- triazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphe- 2)77654 nyl)benzotriazo[e, 2-{2'-hydroxy-5'-(1,1 .S.S-tetramethyibutyOphenylJbenzotriazole, 2-(3',5'-di- tert-butyl-2'-hydroxyphenyl)-5-chloro-benzotriazole, 2-(3'-terl-butyI-2'-hydroxy-5'-methyIphe- nyl)-5-chloro-benzotriazole, 2-(3'-sec-buty!-5'-tert-buty[-2,-hydroxyphenyl)benzoîriazole, 2- (2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5'-di-tert-amy[-2'-hydroxyphenyl)benzotii- azole, 2-(3',5'-bis-(a,a-dimethylbenzyl)-2,-hydroxyphenyl)benzotriazo[e, mixture of 2-(3,-tert- butyl-2l-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)-5-chloro-benzotriazole, 2-(3,-tert-butyl- 5,-[2-(2-ethylhexyloxy)-carbony[ethyl]-2'-hydroxyphenyl)-5-ch]oro-benzotriazole, 2-(3,-tert- buty[-2,-hydroxy-5,-(2-nnethoxycarbonylethyl)phenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl- 2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-2,-hydroxy-5,-(2- octyloxycarbonylethy!)pheny[)benzotriazole, 2-(3'-tert-butyl-5'-[2-{2-ethylhexyloxy)carbonyl- ethylj'-hydroxyphenyObenzotriazole, 2-(3'-dodecy!-2,-hydroxy-5'-methylphenyl)benzotri- azole, and2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2'-methylene-bis[4-(1,1,3,3-tetramethylbuty[)-6-benztriazole-2-yIphenol]; the transesterifi- cation product of 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxypheny[]-2H-benzotri- azole with pofyethylene glycol 300; [R-CHgCCOOtO-yj-]— where R = 3'-tert-butyl-4'- hydroxy-5'-2 H-benzotriazol-2-yl- phenyl.
2.2. 2-Hvdroxvbenzophenones. for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyl- oxy, 4-dodecyloxy, 4-benzyloxy, 4,2,,4'-trihydroxy and 2l-hydroxy-4J4,-dimethoxy derivatives.
2.3. Esters of substituted and unsubstituted benzoic acids, as for example 4-tertbutyl-pheny! salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl resorcinol, bis(4-tert-butyiben- zoyl) resorcinoi, benzoyl resorcinol, 2,4-di-tertbutylphenyl 3,5-di-tert-buty[-4-hydroxybenzo- ate, hexadecyl S.S-di-tert-butyi-hydroxybenzoate, octadecyl S.S-di-tert-butyi-hydroxy- benzoate, 2-methyl-4,6-di-tert-buty!phenyl 3,5-di-tert-butyI-4-hydroxybenzoate.
2.4. Acrylates. for example ethyl a-cyano-p,p-diphenylacrylate, isooctyl a-cyano-p.p-di- phenylacrylate, methyl a-carbomethoxycinnamate, methyl cx-cyano-p-methyl-p-methoxy- cinnamate, butyl a-cyano-p-methyl-p-methoxy-cinnamate, methyl a-carbomethoxy-p- methoxyci n nam ate and N-(p-carbomethoxy-p-cyanoviny! )-2-methyl indoli ne.
2.5. Nickel compounds, for example nickel complexes of 2,2'-thio-bis-[4-(1,1,3,3-tetra- methy[butyi)phenol], such as the 1:1 or 1:2 complex, with or without additional llgands such as n-butylamine, triethanolamine or N-cyc!ohexyldiethanolamine, nickel dibutyldithiocarba- mate, nickel salts of the monoalkyl esters, e.g. the methyl or ethyl ester, of 4-hydroxy-3,5-di- tert-butylbenzylphosphonic acid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methyl- phenyl undecylketoxime, nickel complexes of 1-pheny[-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.
2.6. Sterically hindered amines, for example bis(212,6)6-tetramethyl-4-piperidyl)sebacate, bis(2!2,6)6-tetramethyi-4-piperidyI)succinate, bis(1,2,2,6,6-pentamethyi-4-piperidyl)seba- cate, bis{1 -octyloxy.e.e-tetramethyl-piperidyOsebacate, bis(1 .B-pentamethyl-pt- peridyl) n-butyl-3f5-di-tert-butyl-4-hydroxybenzylmalonate, the condensate of 1-(2-hydroxy- ethyI)-2,2,6,6-tetranriethyl-4-hydroxypiperidine and succinic acid, the condensate of N,N'- b!s(2,2l6,6-tetramethyl-4-piperidyi)hexamethyienediamineand 4-tert-octylamino-2,6-dicloro- 1,3,5-triazine, tris(2,2,6)6-tetramethyl-4-piperidyl)nitrilotriacetateI tetrakis(2,2,6,6-tetraethyl4- piperidyi)-1,2,3,4-butane-tetracarboxylate, 1,1 '-(1 -ethanediylJbistS.S.S.S-tetra- methylpiperazinone), 4-benzoyl-2,2,6,6-tetramethylpiperidine! 4-stearyIoxy-2,2,6,6-tetra- methyipiperidine, bis(1,2,2,6,6-pentamethylpiperidyl)-2-n-butyl-2-(2-hydroxy-3,5-di-tert-butyl- benzyljmalonate, 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decan-2,4-dion, bis(1- octyIoxy-2r2,6,6-tetramethylpiperidyl)sebacate, bis(1-octyioxy-2,2,6,6-tetramethylpiperidyl)- succinate, the condensate of N,N'-bis-(2,2,6,6-tetrarnethy]-4-piperidyl)hexamethylenedi- amine and 4-morpholino-2,6-dichioro-1,3,5-triazine, the condensate of 2-chloro-4,6-bis(4-n- butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triazine and 1,2-bis(3-aminopropylamino)- ethane, the condensate of 2-chloro-4,6-di-(4-n-butyiamino-1,2,2,6,6-pentamethylpiperidyl)- 1,3,5-triazine and 1,2-bis-(3-aminopropylamino)ethane, 8-acetyl-3-dodecy!-7,7,9,9-tetra- methyl-1 J3,8-triazaspiroE4.5]decane-2,4-dione, 3-dodecyl-1 -(2,2,6,6-tetramethyl-4-pipen- dyl)pyrroIidin-2,5-dione, 3-dodecyi-1 -(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-di- one, a mixture of 4-hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine1 a conden¬ sation product of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and 4- cyclohexylamîno-2,6<lich[oro-1,3,5-triazine, a condensation product of 1,2-bis(3-aminopro- pylamino)ethane and 2,4,6-trichloro-l ,3,5-triazine as well as 4-butylammo-2,2,6,6-tetra- methyipiperidine (CAS Reg. No. [136504-96-6]); N-(2,2,6,6-tetramethyl-4-piperidyl)-n-do- decylsuccinimid, N-(1,2,2,6,6-pentamethyi-4-piperidyl)-n-dodecylsuccinimid, 2-undecyl- y-tetramethyi-l-oxa-S.S-ciiaza-oxo-spiroKldecane, a reaction product of 7,7,9,9- tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro [4,5]decane und epichlorohydrin.
2.7. Oxapiiçlgs. for example 4,4'-dioctyloxyoxanilide, 2,2'-diethoxyoxanilide, 2,2'-dioctyloxy- 5,5'-di-tert-butoxanilide, 2,2'-didodecyloxy-5,5'-di-tert-butoxanilide, 2-ethoxy-2'-ethy[oxani- lide, N.N'-bisfS-dimethyiaminopropylJoxamide, 2-ethoxy-5-tert-butyI-2,-ethoxanilide and its mixture with 2-ethoxy-2'-ethyI-5,4'-di-tert-butoxaniiide and mixtures of ortho- and para- methoxy-disubstituted oxanilides and mixtures of o- and p-ethoxy-disubstituted oxanilides.
2.8, 2-(r2-Hydroxyphenyi)-1.3,5-triazines. for example 2I4,6-tris(2-hydroxy-4-octy[oxyphenyi)- 1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4J6-bis(2,4-dimethy[phenyl)-1 .Striazine, 2- (2,4-dihydroxyphenyl)-4,6-bis(2,4dimethylphenyl)-1,3,5-triazine, 2,4-bis{2-hydroxy-4-propyl- oxyphenyl)-e-(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis{4- methylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecy[oxyphenyl)-4,6-bis(2,4-dimethylpheny[)- 1,3,5-triazine, 2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxy-propoxy)pheny!]-4l6-bis(2,4-dimethyl)-1,3,5-triazine, 2- [2-hydroxy-4-(2-hydroxy-3-octyloxy-propyloxy)phenyl]-4,6-bis(2,4-dimethyI)-1,3,5-iriazine, 2- [4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxy-pheny[]-416-bis(2,4-dimethy[phe- nyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxy-propoxy)phenyl]-4,6-bîs(2,4-di- methylphenyi)-1,3,5-triazine, 2-(2-hydroxy-4-hexyloxy)phenyl-4,6-diphenyl-1,3,5-triazine, 2- {2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-l,3,5-triazine, 2,4,6-tris[2-hydroxy-4-{3-butoxy-2- hydroxy-propoxy)phenyi]-1,3,5-triazine, 2-(2-hydroxyphenyl)-4-(4-methoxypheny!)-6-phenyl- 1,3,5-triazïne.
3. Metal deactivators, for example N,N'-diphenyloxamide, N-saiicylal-N'-salicyloyl hydrazine, N,N'-bis(salicyloyl) hydrazine, N'-bisfS.B-di-tert-butyl-hydroxyphenylpropionyl) hydrazine, S-salicyloylamino-l-triazole, bis(benzy[idene)oxalyl dihydrazide, oxanilide, isophthaloyi dihydrazide, sebacoyl bisphenylhydrazide, N.N'-diacetyladipoyl dihydrazide, N.N'-bisfsalicyi- oyl)oxaly[ dihydrazide, N,N'-bis(salicyloyl)thiopropiony[ dihydrazide.
4. Phosphites and phosphonites. for example triphenyi phosphite, diphenyl atkyl phosphites, phenyl dialkyl phosphites, tiis(nonyiphenyl) phosphite, trilauryl phosphite, trioctadecyl phos¬ phite, distearyl pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-tert-buty[phenyl) pentaerythritol diphosphite, bis(2,6- di-tert-buty1-4-methylphenyl)-pentaerythntot diphosphite, diisodecyloxypentaerythritol di- phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tris{tert- butylphenyOpentaerythritot diphosphite, tristearyl sorbitol trtphosphite, tetrakis(2,4-dMert- butylphenyl) 414'-biphenylene diphosphoniie, e-isooctyloxy.S.IO-tetra-tert-butyl-H-di- benzfd.gH ,3,2-dioxaphosphocin, 6-fiuoro-2,4r8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]- 1,3,2-dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyI)methytphosphite, bis{2t4-di-tert- butyi-6-methylphenyl)ethylphosphite.
5. Hydroxyiamines. for example, rN-dibenzylhydroxylamine, N,N-diethyihydroxyiamine, N.N-dioctylhydroxyiamine, N,N-dilaurylhydroxyIamine, N.N-ditetradecylhydroxylamine, N,N- dihexadecylhydroxyiamine, N,N-dioctadecylhydroxylamine, N-hexadecyl-N-octadecyl- hydroxylamine, N-heptadecyl-N-octadecylhydroxylamine, N,N-dialkylhydroxylamine derived from hydrogenated tallow amine.
6. Nitrones, for example, N-benzyl-alpha-phenyl-nitrone, N-ethy!-alpha-methyl-nitrone, N-oc- tyl-alpha-heptyl-nitrone, N-lauryl-alpha-undecyl-nitrone, N-tetradecyi-alpha-tridecyl-nitrone, N-hexadecyi-alpha-pentadecyl-nitrone, N-octadecyl-alpha-heptadecyl-nitrone, N-hexadecyl- alpha-heptadecyi-nitrone, N-ocatadecyl-alpha-pentadecyl-nitrone, N-heptadecyl-alpha-hep- tadecyl-nitrone, N-octadecyl-alpha-hexadecyl-nitrone, nitrone derived from N.N-dialkyl- hydroxylamine derived from hydrogenated tallow amine.
7. Thiosynergists. for example, dilauryl thiodipropionate or distearyl thlodipropionate.
8. PeroxIdQ scavengers, for example esters of p-thiodipropionic acid, for example the lauryi, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercapto- benzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis([î- dodecylmercaptojpropionate.
9. Polyamide stabilisers, for example, copper salts in combination with iodides and/or phos¬ phorus compounds and salts of divalent manganese.
10. Basic co-stabiiisers. for example, melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids for example calcium stéarate, zinc stéarate, magnesium behenate, magnesium stéarate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate or tin pyrocatecholate.
11. Nucleating agents, for example, inorganic substances such as talcum, metal oxides such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, prefe¬ rably, alkaiine earth metals; organic compounds such as mono- or polycarboxylic acids and the salts thereof, e.g. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium suc¬ cinate or sodium benzoate; polymeric compounds such as ionic copolymers ("ionomers").
12. Fillers and reinforcing agents, for example, calcium carbonate, silicates, glass fibres, glass bulbs, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, car¬ bon black, graphite, wood flour and flours or fibers of other natural products, synthetic fi¬ bers.
13. Other additives, for example, plasticisers, lubricants, emulsifiers, pigments, rheology additives, catalysts, flow-control agents, optical brighteners, flameproofing agents, antistatic agents and blowing agents.
14. Benzofuranones and indoiinones. for example those disclosed in US-A-4325863, US-A- 4338244, US-A-5175312, US-A-5216052, US-A-5252643, DE-A-4316611, DE-A-4316622, DE-A-4316876, EP-A-0589839 or EP-A-0591102 or 3-[4-{2-acetoxyethoxy)phenyl]-5,7-di- tert-butyl-benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phenyl]benzofuran- 2-one, 3,3,-bis[5I7-di-tert-butyi-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one], 5,7-di-tert- butyl-3-(4-ethoxyphenyl)benzofuran-2-one1 3-(4-acetoxy-3,5-dimethylphenyl)-5,7-di-tert-but- yl-benzofuran-2-one, 3-{3,5-dimethyI-4-pivaloyloxyphenyl)-5,7-di-tert-butyl-benzofuran-2- one.
The additional additives, with the exception of the benzofuranones listed under No. 14, are added, for example, in concentrations of from 0.01 to 10%, based on the overall weight of the organic material.
Further preferred compositions comprise not only component (a) and the carrier-bound compounds of the formula I, II, lil and/or IV but also further additives, especially phenolic antioxidants, light stabilizers and/or processing stabilizers.
Particulariy preferred additives are phenolic antioxidants (section 1 in the list), sterically hindered amines (section 2.6 in the list), phosphites and phosphonites (section 4 in the list) and peroxide scavengers (section 8 in the list).
Likewise particularly preferred additional additives (stabilizers) are 2-benzofuranones as described, for example, in US-A-4 325 863, US-A-4 338 244, US-A-5 175 312, US-A-5 216 052, US-A-5 252 643, DE-A-4 316 611, DE-A-4 316 622, DE-A-4 316 876, EP-A-0 589 839 and EP-A-0 591 102.
Examples of such 2-benzofuranones are compounds of the formula R',, T in '13 (V R'12 H » in which R'-n is an unsubstituted or substituted, carbocyclic or heterocyclic aromatic ring system; R'12 is hydrogen; Ft'« is hydrogen, alkyl having 1 to 12 carbon atoms, cyclopentyl, cyclohexyl or chlorine; O R'i3 is as defined for RNa or R'h or is a radical of the formula —(CH2)—C—OR't6 , O o o il II IE —(Chy.-C-ISKR', , --(CH2)s-C-0-A-0-C-(CH2) — E , 2Î77654 40- 0 0 O O II 11 11 II —(CH-C-NRVA-NR1—C-(CH2)S-E , — (CH2)-C-NR'—A-0-C-(CH2)s-E , o , , o o 'I / H u o ™ " —(CH2)rC —N N—C—<ChyrE ,-CHa-S-R'tt, —CHtCsH-C-OR' or-D-E, in which R'i6 is hydrogen, alkyi having 1 to 18 carbon atoms, aikyl having 2 to 18 carbon atoms which is interrupted by oxygen or sulfur, dialkylaminoalkyl having a total of 3 to 16 carbon atoms, cyciopentyl, cyclohexyl, phenyl or phenyl which is substituted by from 1 to 3 alkyl radicals together having not more than 18 carbon atoms; s is 0, 1 or 2; the substituents R'17 independently of one another are hydrogen, alkyl having 1 to 18 carbon atoms, cyciopentyl, cyclohexyl, phenyl, phenyl which is substituted by 1 or 2 alkyl radicals together having not more than 16 carbon atoms, a radical of the formula -CahUOH, o -CzHi-OCtHgt+i or — CjH—o— C—R' , or together with the nitrogen atom to which they are attached form a piperidine or morpholine radical; tis 1 bis 18; R'ao fs hydrogen, alkyl having 1 to 22 carbon atoms or cycloalkyl having 5 to 12 carbon atoms; A is an alkyiene having 2 to 22 carbon atoms which is uninterrupted or is interrupted by nitrogen, oxygen or sulfur; R'is is hydrogen, aikyl having 1 to 18 carbon atoms, cyciopentyl, cyclohexyl, phenyl, benzyl or phenyl which is substituted by 1 or 2 alkyi radicals together having not more than 16 carbon atoms; R'19 is aikyl having 1 to 18 carbon atoms; D is -O-, -S-, -SO-, -SO2- or -C(R'21)r; the substituents R'j! independently of one another are hydrogen or d-Ctealkyl, the two R'a! substitutents together containing from 1 to 16 carbon atoms, R'21 also being phenyl or a O o ,- , r*. t •I » radical of the formula —(CH3)-C—OR' or — (CH2)—c—NfR1, in which s, R' and RV are as defined above; E is a radical of the formula in which R'n, R' and R'™ are as defined above; und R'-is is hydrogen, alkyl having 1 to 20 carbon atoms, cyclopentyl, cyclohexyl, chlorine or a O O radical of the formula —CH—C—OR'16 or — CH—C—M{R'n)z in which R'16 and R' are as defined above, or R'15 together with R'u forms a tetramethylene radical.
Preferred 2-benzofuranones are those in which R',3 is hydrogen, alkyi having 1 to 12 carbon O atoms, cyclopentyl, cyclohexyl, chlorine or a radical of the formula —(CH2)—C—OR'16 , o —(CHg)—C—N{R'17)2 or -D-E, in which s, R'-ie, R', D and E are as defined above, and R'is is in particular hydrogen, alkyi having 1 to 18 carbon atoms, cyclopentyl or cyclohexyl.
Further preferred 2-benzofuranones are those in which R'u is phenyl or phenyl which is substituted by 1 or 2 alkyl radicals together having not more than 12 carbon atoms; R'ia is hydrogen; R'm is hydrogen or alkyl having 1 to 12 carbon atoms; o RSs is hydrogen, alkyl having 1 to 12 carbon atoms, —(CH2)—C—OR' , o —(CH2)—C—N(R)2 or -D-E; R'K is hydrogen, alkyl having 1 to 20 carbon atoms, o o —CH—C—OR',, or — CH—C— N(R'17)2 , or R'is together with R'u forms a tetramethylene radical, where s, R', R', D and E are as defined initially.
42- Also of particular interest are those 2-benzofuranones in which RSs is hydrogen, alkyl having 1 to 12 carbon atoms or -D-E; R'12 and FT» independently of one another are hydrogen or alkyl having 1 to 4 carbon atoms; and FT is is alkyl having 1 to 20 carbon atoms, with D and E being as defined initially.
Likewise of particular interest, finally, are those 2-benzofuranones in which R'is is alkyl having 1 to 4 carbon atoms or -D-E; R'12 and H'u are hydrogen; and R'is is alkyl having 1 to 4 carbon atoms, cyclopentyi orcyclohexyl, with D being a group -CfR'sife- and E being a radical of the formula in which the substttuents R are identical to or different from one another and are each alkyl having 1 to 4 carbon atoms, and R'n, R'12. R'14 and R'ts are as defined above.
The quantity of 2-benzofuranones employed additionally can vary within wide limits. There may for example be present in a proportion of from 0.0001 to 5% by weight, preferably from 0.001 to 2% by weight and, in particular, from 0.01 to 2% by weight in the novel composi¬ tions.
Incorporation of the carrier-bound compounds of the formula I, II, Hi and/or IV, and, if appro¬ priate, of further additives into the polymeric organic material is carried out by known me¬ thods, for example before or during shaping, or else by applying the dissolved or dispersed carrier-bound compounds of the formula I, II, III and/or IV to the polymeric organic material, with or without subsequent evaporation of the solvent. The carrier-bond compounds of the formula I, II, 111 and/or IV can also be added to the materials to be stabilized in the form of a masterbatch containing these carrier-bound compounds in a concentration, for example, of from 2.5 to 25% by weight.
-43 The carrier-bound compounds of the formula 1, II, 111 and/or IV can also be added prior to or during polymerization or prior to crosslinking.
The carrier-bound compounds of the formula i, ii, III and/or IV can be incorporated into the material to be stabilized in pure form or encapsulated in waxes, oils or polymers.
The carrier-bound compounds of the formula I, II, 111 and/or IV can also be sprayed onto the polymer to be stabilized. They are capable of diluting other additives (for example the custo¬ mary additives indicated above) or meits thereof, and as a consequence can also be sprayed onto the polymer to be stabilized together with these additives. They are added with particular advantage by spray application during the deactivation of the polymerization catalysts, in which case, for example, the steam which is employed for the deactivation can be used for spraying.
In the case of spherically polymerized polyolefins it may, for example, be advantageous to apply the carrier-bound compounds of the formula 1,11, III and/or IV, together if desired with other additives, by spraying.
The materials which have been provided with fillers and stabilized in this way can be em¬ ployed in a wide variety of forms, for example as films, fibres, tapes, moulding compositions or profiles or as binders for surface-coating materials, adhesives or putties.
As already mentioned, the organic materials to be protected are preferably organic poly¬ mers, especially synthetic organic polymers. In this context, thermoplastic materials are protected with particular advantage, especially polyolefins. A point which should be empha¬ sized in particular here is the outstanding effectiveness of the novel carrier-bound com¬ pounds of the formula I, II, III and/or IV as processing stabilizers (heat stabilizers). For this purpose they are added to the polymer advantageously prior to or during its processing.
However, other polymers, for example elastomers, can also be stabilized against degrada¬ tion, for example light-induced or thermooxidative degradation. Elastomers can be taken from the above listing of possible organic materials.
A preferred embodiment of the present invention is therefore the use of the carrier-bound compounds of the formula I, II, III and/or IV simultaneously as fillers and stabilizers, espe¬ cially processing stabilizers (heat stabilizers), for organic materials against oxidative, ther¬ mal or light-induced degradation.
The carrier-bound compounds of the formula I, II, 111 and/or iV are notable for an advanta¬ geous colour behaviour, i.e. little discolouration of the organic materials during processing.
The present invention also relates to a method of stabilizing an organic material against oxidative, thermal or light-induced degradation which comprises incorporating in or applying to this material at least one carrier-bound compound of the formula I, II, III and/or IV.
In addition, the present invention also relates to a method of introducing a filler into an orga¬ nic material, which comprises first coating the filler, prior to its introduction into the organic material, with a compound of the formula I, II, III and/or IV.
The examples which follow illustrate the invention in more detail. Parts and percentages are by weight.
Example 1 : Preparation of calcium carbonate-bound 3-[3,5-di-tert-butyI-4-hydroxyphenyl3- propionic add of the formula la (compound (101)).
A solution of 2.0 g (7.2 mmol) of 3-[3,5-di-tert-butyl-4-hydroxyphenyIjpropIonic acid of the formula la in 30 ml of 0.25 N sodium hydroxide solution is added dropwise at esC to a sus¬ pension of 100 g of calcium carbonate in 600 ml of water. The mixture is then stirred for minutes, cooled to room temperature and filtered. The residue is dried at about 650C in va¬ cuo to constant weight, giving 90 g of calcium carbonate-bound 3-[3,5-di-tert-butyl-4- hydroxyphenyl]propionic acid of the formula la (compound (101)). The loading concentration is 1.0% by weight.
Example 2: Preparation of calcium carbonate-bound 3-i;3-tert-buty!-4-hydroxy-5-methylphe- nyljpropionic acid of the formula lb (compound (102)).
A mixture of 400 g of calcium carbonate and 4.0 g of 3-[3-tert-butyi-4-hydro>cy-5-methylphe- nyl]propionic acid is mixed in a mixer at 4000 revolutions/minute until a temperature of 150oC is reached. After about 20 minutes the mixture is cooled to room temperature, giving 400 g of calcium carbonate-bound 3-[3-tert-butyl-4-hydroxy-5-methylpheny!]propionicacid of the formula lb (compound (102)). The loading concentration is 1.0% by weight.
Example 3: Preparation of calcium carbonate-bound 3,5-di-tert-butyl-4-hydroxybenzylthio- acetic acid of the formula Ic (compound (103)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of 3,5-di- tert-butyl-4-hydroxybenzylthioacetic acid of the formula Ic gives calcium carbonate-bound 3,5-di-tert-butyl-4-hydroxybenzylthioacetic acid of the formula Ic (compound (103)) with a loading concentration of 1.0% by weight.
Example 4: Preparation of calcium carbonate-bound 3,5-di-tert-butyl-4-hydroxybenzylphos- phonic acid of the formula Ma (compound (104)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of 3,5-di- tert-butyi-4-hydroxybenrytphosphonic acid of the formula Ha gives calcium carbonate-bound S.S-di-tert-butylhydroxybenzylphosphonic acid of the formula lia (compound (104)) with a loading concentration of 1.0% by weight.
Example 5: Preparation of calcium carbonate-bound 3-(dodecyithio)propIonic acid of the formula Ilia (compound (105)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of 3-(do- decylthio)propionic acid of the formula Ilia gives calcium carbonate-bound 3-(dodecylthio)- propfonic acid of the formula Ilia (compound (105)) with a loading concentration of 1.0% by weight.
Example 6: Preparation of calcium carbonate-bound monoethyl 3,5-di-tert-butyl-4-hydroxy- benzylphosphonate of the formula lib (compound (106)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of mono- ethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate of the formula lib gives calcium carbo¬ nate-bound monoethyl 315-di-tert-buty!-4-hydroxybenzylphosphonate of the formula lib (compound (106)) with a loading concentration of 1.0% by weight.
Example 7: Preparation of calcium carbonate-bound monotS.S.S.S-tetramethylpiperidyl) suc¬ cinate of the formula IVa (compound (107)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of mono- (3,3,5,5-tetramethylpiperidyl) succinate of the formula IVa gives calcium carbonate-bound mono(3(3,5,5-tetramethylpiperidyl) succinate of the formuia IVa (compound (107)) with a loading concentration of 1.0% by weight.
Example 8: Preparation of calcium carbonate-bound 2l2,6,6-tetramethyl-4-(2,3-epoxypro- poxy)piperidine of the formula IVg (compound (108)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of 2,2,6,6-tetramethyl-4-(2I3-epoxypropoxy)pipetidIne of the formula IVg gives calcium carbo¬ nate-bound 2,2,6)6-tetramethyl-4-(2,3-epoxypropoxy)piperidine of the formula IVg (com¬ pound (108)) with a loading concentration of 1.0% by weight.
Example 9: Preparation of titanium oxide-bound 1,2,2,6,6-pentamethyl-4-(2,3-epoxypro- poxy)piperidine of the formula IVh (compound (109)).
9.5 g (118 mmol) of titanium oxide (Tiosorb'UFOI, Tioxtde Specialities Ltd., England) and 0.5 g (2.2 mmol) of 1,2J2,6,6-pentamethyl-4-(2,3-epoxypropoxy)piperidine [EP-A-0 634 449, Example A1 ] are suspended in 100 ml of methylene chloride and the suspension is then concentrated under vacuum on a rotary evaporator. The residue is left to stand for 6 hours at 2QQ0C. The product is then cooled and subjected twice to extraction with n-hexane, giving titanium oxide-bound le.e-pentamethyW-S-epoxypropoxyJpiperidlne of the formula IVh (compound (109)) with a loading concentration of 4.0% by weight. This value is determined by means of nitrogen determination by the Kjeldahl method.
-47 Example 10: Preparation of silcon oxide-bound 1,2,2T6,6-pentamethyi-4-(2,3-epoxypro- poxy)piperidine of the formula IVh (compound (110)).
9.5 g (158 mmol) of silicon oxide (Aerosir380, Degussa, Germany) and 0.5 g (2.2 mmol) of 1,2,2,6,6-pentamethyI-4-(2,3-epoxypropoxy)piperidine [EP-A-0 634 449, Example AI] are suspended in 100 ml of methylene chloride and the suspension is then concentrated under vacuum on a rotary evaporator. The residue is left to stand for 5 hours at 200oC, giving sili¬ con oxide-bound 1,2,2,6,6-pentamethyl-4-(2,3-epoxypropoxy)piperidine of the formula IVh (compound (110)) with a loading concentration of 5.2% by weight. The measurement of the nitrogen content of the product by the Kjeldahl method gives a value of 0.39% by weight.
For checking purposes, the product is additionally subjected to extraction with boiling n-he- xane for 18 hours in a Soxhlet apparatus and the product-containing extract is then dried.
Renewed nitrogen determination of this product by the Kjeldahl method gives a value of 0.39% by weight. Consequently, the stabilizer (compound of the formula IVh) cannot be removed from the silicon oxide by extraction with n-hexane.
Example 11 : Preparation of silicon oxide-bound 1-cyclohexyloxy-2,2,6,6-tetramethyl-4-(2,3- epoxypropoxyjpiperidine of the formula IVi (compound (111)).
Working in analogy to Example 10 and using 9.5 g of silicon oxide and 0.5 g of 1-cyclo- hexyloxy-2)2,6,6-tetramethyl-4-(2,3-epoxypropoxy)p!peridine of the formula IVi [EP-A-0 634 449, Example A2] gives silicon oxide-bound 1-cyclohexyloxy-2,2,6,6-tetra- methyl-4-(2,3-epoxypropoxy)piperidine of the formula IVi (compound (111)) with a loading concentration of 5.2% by weight.
Example 12: Preparation of silicon oxide-bound 1-octyloxy-2!2,6,6-tetramethyl-4-(2,3-epoxy- propoxy)piperidine of the formula IVk (compound (112)).
Working in analogy to Example 10 and using 9.5 g of silicon oxide and 0.5 g of 1-octyloxy- 2,2,6,6-tetramethyl-4-(2,3-epoxypropoxy)piperidine of the formula IVk [EP-A-0 634 449, Example A3] gives silicon oxide-bound 1-octyloxy-2,2>6,6-tetramethyl-4-(2,3-epoxypropoxy)- piperidine of the formula Ivk fixed to silicon oxide (compound (112)) with a loading concen¬ tration of 5.2% by weight.
48- Example 13: Preparation of silicon oxide-bound 1-benzyl-2l2,6)6-tetramethyl-4-{2)3-epoxy" propoxyjpiperidine of the formula IVm (compound (113)).
Working in analogy to Example 10 and using 9.5 g of silicon oxide and 0.5 g of 1 -benzyl- 2,2,6)6-tetramethyl-4-(2,3-epoxypropoxy)piperidine of the formula IVm [EP-A-0 634 449, Example A4] gives silicon oxide-bound 1-benzyl-2,2,6,6-tetramethyl-4-(2,3-epoxypropoxy)- piperidine of the formula IVm fixed to silicon oxide {compound (113)) with a loading concen¬ tration of 5.2% by weight.
Example 14: Preparation of calcium carbonate-bound N-[4-(2)2I6,6-tetramethy[)piperidyl]- aminoacetlc acid of the formula IVf (compound (114)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of N-[4- (2I2,616-tetramethyl)piperidyl]aminoacetic acid of the formula IVf [C.A. Reg. No. 71866-13-2] gives calcium carbonate-bound N-[4-(2,2,6I6-tetramethyl)piperidyI]aminoacetic acid of the formula IVf fixed to calcium carbonate (compound (114)) with a loading concentration of 1.0% by weight.
Example 15: Preparation of calcium carbonate-bound monotS.SAS.S-pentamethylpiperidyl) succinate of the formula IVb (compound (115)).
a) Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of mo- no(3,3,4,5,5-pentamethylpiperidyl) succinate of the formula IVb [Example 15b] gives cal¬ cium carbonate-bound monofS.SAS.S-pentamethylpiperidyl) succinate of the formula IVb (compound (115)) with a loading concentration of 1.0% by weight.
b) A mixture of 85.5 g (0.50 mol) of 4-hydroxy-1,2(2l6,6-pentamethylpiperidine, 50 g (0.50 mol) of succinic anhydride and 500 ml of xylene is boiled under reflux for one hour. The reaction mixture is subsequently poured into 3 litres of n-hexane. The product is filtered, and crystallization of the residue from xylene gives 125 g (92 %) of mono(3,3,4,5,5-penta- methylpiperidyl) succinate of the formula IVb, m.p. 1630C. Analysis calculated: C 61.97; H 9.29; N 5.16%. found: C 61.92; H 9.43; N 5.10%.
-49 Example 16: Preparation of calcium carbonate-bound mono(3,3,5,5-tetranriethylpiperidyI)- succinamide of the formula IVc (compound (116)).
a) Working in analogy to Example 2 and using 400 g of calcium carbonate and d 4,0 g of mono(3,3,5,5-tetramethylpiperidyl)succinamide of the formula IVc [Example 16b] gives cal¬ cium carbonate-bound monofS.S.S.S-tetramethylpiperidyOsuccinamide of the formula IVc (compound (116)) with a loading concentration of 1.0% by weight.
b) A mixture of 48 g (0.30 mol) of 4-amino-1,2,2,6,6-tetrarnethylpiperidine, 30 g (O.SOmo!) of succinic anhydride and 1000 mi of xylene is boiled under reflux for 6 hours. The reaction mixture is subsequently poured into 3 litres of n-hexane. The reaction mixture is subse¬ quently cooled and the precipitated product is filtered. Crystallization of the residue from acetone/water gives 64 g (83% ) of mono(3,3,5,5-tetramethylpiperidyl)succinamide of the formula IVc, m.p. 322oa Analysis calculated: C 60.91; H 9.44; N 10.93%. found: C 60.47; H 9.50; N 10.86%.
Example 17: Preparation of calcium carbonate-bound mono(3,3,4,5,5-pentamethylpiperi- dyl)succinamide of the formula IVd (compound (117)).
a) Working in analogy to Example 2 and using 400 g of calcium carbonate and 4,0 g of mo- no(3,3,4,5,5-pentamethylpiperidyl)succinamide of the formula IVd [Example 17b3 gives cal¬ cium carbonate-bound monotS.SAS.S-pentamethylpiperidyOsuccinamide of the formula IVd (compound (117)) with a loading concentration of 1.0% by weight.
b) Mono(3,3,4,5,5-pentamethylpiperidyl)succinamide of the formula IVd is prepared in ana¬ logy to Example 16b using 4-amino-1,2,2,6,6-pentamethy[piperidine instead of 4-amino- 2,2,6,6-tetramethylpiperidine.
Example 18: Preparation of calcium carbonate-bound 2,2,6,6-tetramethyl-4-piperidyloxy- acetic acid of the formula IVe (compound (118)).
Working in analogy to Example 2 and using 400 g of calcium carbonate and 4.0 g of 2t2,6,6-tetramethyl-4-piperidy!oxyacetic acid of the formula IVe gives calcium carbonate- -50 bound 2,2,616-tetramethyl-4-piperidyloxyacetic acid of the formula !Vd (compound (118)) with a loading concentration of 1.0% by weight.
Example 19: Preparation of calcium carbonate-bound mono(313,5,5-tetramethylpiperidyl)- dodec-2-enylsuccinamide of the formula IVn (compound (119)).
a) Working in analogy to Example 2 and using 400 g of calcium carbonate and 4,0 g of mo- notS.SS-tetramethylpiperidyOdodec--enylsuccinamide of the formula IVn [Example 19b] gives calcium carbonate-bound mono(3,3,5,5-tetramethylpiperidyl)dodec-2-enylsuccinamide of the formula IVn (compound (119)) with a loading concentration of 1.0% by weight.
b) A mixture of 11.7 g (75 mmol) of 4-amino-1,2,2,6,6-tetramethylpîperidine, 20 g (75 mmol) of dodec-2-enylsuccinic anhydride [Fluka 45346] and 250 ml of xylene is boiled under reflux for 6 hours. The reaction mixture is subsequently cooled and is concentrated under vacuum in a rotary evaporator. Crystallization of the residue from methanol/acetonitrile gives 30 g (95% ) of monofS.SS-tetramethylpiperidyOdodec-enylsuccinamide of the formula IVn, m.p. 1820C. Analysis calculated: C 71.05; H 10.97; N 6.63%. found: C 69.89; H 10.89; N 6.60%.
Example 20: Preparation of talc-bound 3-(dodecylthio)propionic acid of the formula Ilia (compound 120)).
g of talc (Luzenac0) are added to a solution of 0.5 g of 3-(dodecylthio)propionic acid of the formula Ilia in 200 ml of hexane. The mixture is subsequently concentrated under vacu¬ um in a rotary evaporator, giving 50.5 g of talc-bound 3-(dodecylth!0)propionic acid of the formula Ilia (compound (120)). The loading concentration is 1.0% by weight.
Example 21: Incorporation pf calcium carbonate into polypropylene (dispersibility test).
80 parts by weight of polypropylene granules (Propathene* GYM 45) are mixed with parts by weight of calcium carbonate and, respectively, with 20 parts by weight of the novel calcium carbonate-bound compounds from Examples 1 to 8 at 230oC in a Gottfert Etrusio- meter. The propylene tapes obtained from the extrusion are pressed at 190oC for 2 minutes W654 to give 0.5 mm thick films. The dispersion of the calcium carbonate (filler) in the films is then assessed visually in accordance with the following key: 1 = very poor; 2 = poor; 3 = ave¬ rage; 4 = average-good; 5 = good; 6 = very good. The results are compiled in Table 1.
Table 1 ; Filler Dispersion parts of calcium carbonate 3 (average) parts of compound (105) 6 (very good) parts of compound (106) 5 (good) Example 22: Stabilization oï polypropylene, oven ageing test and exposure to light test.
parts by weight of the novel carrier-bound compounds from Examples 1 to 20 are mixed with 60 parts by weight of polypropylene powder {*Profax 6501 ) under nitrogen for 6 mi¬ nutes at 230° C in a Brabender plastograph. The mixture is subsequently compression moulded at 230oC to give 1.0 mm thick plates from which 45 x 17 mm test specimens are punched. Some of these test specimens are then aged in a conventional oven at 1350C. A measurement is made of the time which lapses before the appearance of a physical, locally restricted discolouration in the test specimens. The longer this time, the more effective the stabilizer. The results are compiled in Table 2.
Table 2: Oven ageing test at 1350C Filler Days to decomposition parts of calcium carbonate 1 parts of compound (102) 9 parts of compound (107) 9 parts of compound (108) 9 The other test specimens are subjected to an exposure to light test (Atlas weatherometer type WOM Ci 65, black pane! temprature 630C). The gloss and the surface roughness of these specimens is then determined, the gloss is measured using a deflector. The yardstick used for measuring the gloss of the surface is the reflectometer value (ROM). Its magnitude is determined by the proportion to which the surface contributes, on the basis of its reflec¬ tion properties, to the formation of the impression of gloss. The reflectometer value is there¬ fore the optical parameter for the gloss and thus also for the degree of decomposition of a surface. The greater the value, the better the sample surface. To determine the surface roughness (Ra) the test specimen is scanned with a measurement needle at a certain length in order to obtain a measured profile (length, high points, low points). Ra denotes the arithmetic mean of the absolute contributions of all profile ordinales within the overall sec¬ tion measured after filtering out deviations in form and coarse components of the waviness.
The higher the value, the poorer the sample surface. The results are compiled in Table 3.
Table 3: Exposure to iiqht test Filler Gloss (ROM)after... hours Surface roughness (Ra)after... hours parts of calcium carbonate 74 40 17 13 0.11 0.44 0.93 1.22 parts of compound (107) 70 62 61 61 0.12 0.16 0.16 0.18 parts of compound (108) 72 68 67 67 0.12 0.14 0.15 0.15 -54 Cpds. of formulae (I) -(IV) fixed on a support are claimed. The use of the cpds. as fillers, and stabilisers for organic materials against oxidative, thermal or light-induced breakdown esp. as heat stabilisers for thermoplastic polymers and the organic compsns. contg. the cpds. are also claimed. R1,R2 =1-16C alkyl, 5-12C cycloalkyl, Ph or 7-9C phenylalkyl; R4,R5 = R, 1-20C alkyl, Ph or naphthyl opt. substd. with 1-4C alkyl, NH4 or Mr+/r; R6 = H, 1-18C alkyl, 5-12C cycloalkyl, 7-9C phenylalkyl, NH4 or Mr+/r; R7 = 1-18C alkyl, Ph opt. substd. wit 1-4C alkyl, or -(CH2)q-COOR6; R8 = 1-8C alkyl; R9 = H, 1-8C alkyl, O degrees (sic), OH, NO, -CH2CN, 1-18C alkoxy, 5-12C cycloalkyloxy, 3-6C alkenyl or alkynyl, 1-8C acyl, or 7-9C phenylalkyl opt. substd. on the Ph ring with 1-4C alkyl; R10 = -COX5COOR6, glycidyl or -X6COOR6; R11 = H or 1-18C alkyl; R12 = 1-18C alkyl or 2-14C alkenyl; R13 = H or 1-4C alkyl; M = metal cation with valency r; X1 = direct bond, 1-8C alkylene, 2-8C alkylene broken by O or S, -CH2CH(R8)- or gp. of formula (V); X2 = O or NH; X3 = 1-6C alkylene; X4 = O or NR11; X5 = direct bond, 1-8C alkylene, 2-6C alkenylene, =CH(R12) or gps. of formula (VI)-(VIII); X6 = 1-18C alkylene, 2-18C alkylene, 2-18C alkylene broken by O or S, or phenylene; m = 0-2; n = 1-6; p,q = 1 or 2; r = 1-3; when n = 1, then R3 = H, 1-25C alkyl, 5-12C cycloalkyl, Ph opt. substd. with 1-4C alkyl, or a monovalent residue of a hexose or hexitol, and if X2 = O, then R3 may = NH4 or Mr+/r; or, when n = 2, then R3 = 2-12C alkylene, 4-12C alkylene broken by O or S, or a divalent residue of a hexose or hexitol; or when n = 3, then R3 = -CH2-CH-CH2- or a trivalent residue of a hexose or hexitol; or when n = 4, then R3 = 4-10C alkane tetrayl or a tetravalent residue of a hexose or hexitol; or when n = 5, then R3 = a pentavalent residue of a hexose or a hexitol; or when n = 6, R3 = gp. (IX) or a hexavalent residue of a hexitol. The cpds. adhere well to the support and are not easily extracted by solvents, e.g. alcohols or hydrocarbons. A carrier-bound compound or compounds of the formula I, II, III and/or IV in which R1 is C1-C18alkyl, C5-C12cycloalkyl, phenyl or C7-C9phenylalkyl, R2 is C1-C18alkyl, C5-C12cycloalkyl, phenyl or C7-C9phenylalkyl, R4 is hydrogen, C1-C20alkyl, naphthyl or phenyl which is unsubstituted or substituted by C1-C4alkyl; ammonium or R5 is hydrogen, C1-C20alkyl, naphthyl or phenyl which is unsubstituted or is substituted by C1-C4alkyl; ammonium or R6 is hydrogen, C1-C18alkyl, C5-C12cycloalkyl, C7-C9phenylalkyl, ammonium or R7 is C1-C18alkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; or -(CH2)q-CO2R6, R8 is C1-C8alkyl, R9 is hydrogen, C12-C8alkyl, O•, OH, NO, -CH2CN, C1-C18alkoxy, C5-C12cycloalkyloxy, C3-C6alkenyl, C3-C6alkynyl, C1-C8acyl, C7-C9phenylalkyl which is unsubstituted or is substituted on the phenyl ring by C1-C4alkyl, R10 is or ―X6―COOR6, R11 is hydrogen or C1-C18alkyl, R12 is C1-C18alkyl or C2-C14alkenyl, R13 is hydrogen or C1-C4alkyl, M is an r-valent metal cation, X1 is a direct bond, C1-C8alkylene, C2-C8alkylene which is interrupted by oxygen or sulfur; where R1 and R2 are as defined above, X2 is oxygen or -NH-, X3 is C1-C6alkylene, X4 is oxygen or -NR11-, X5 is a direct bond, C1-C8alkylene, C2-C8alkenylene, X6 is C1-C18alkylene, C2-C18alkenylene, C2-C18alkylene which is interrupted by oxygen or sulfur; or is phenylene, m is 0, 1 or 2, n is an integer from the range from 1 to 6, p is 1 or 2, q is 1 or 2, r is 1, 2 or 3, and if n is 1, R3 is hydrogen, C1-C25alkyl, C5-C12cycloalkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; a monovalent radical of a hexose, a monovalent radical of a hexitol; and, if X2 is oxygen, R3 is additionally ammonium or if n is 2, R3 is C2-C12alkylene, C4-C12alkylene which is interrupted by oxygen or sulfur; a divalent radical of a hexose or a divalent radical or a hexitol, or, if n is 3, R3 is a trivalent radical of a hexose or a trivalent radical of a hexitol, or, if n is 4, R3 is C4-C10alkanetetrayl, a tetravalent radical of a hexose or a tetravalent radical of a hexitol, or, if n is 5, R3 is a pentavalent radical of a hexose or a pentavalent radical of a hexitol, or, if n is 6, R3 is or a hexavalent radical of a hexitol; A carrier-bound compound according to claim 1, wherein the compound or compounds is/are of the formula I, II and/or III. A carrier-bound compound according to claim 1, wherein R1 is C1-C12alkyl, C5-C8cycloalkyl, phenyl or C7-C9phenylalkyl, R2 is C1-C12alkyl, C5-C8cycloalkyl, phenyl or C7-C9phenylalkyl, R4 is hydrogen, C1-C12alkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; ammonium or R5 is hydrogen, C1-C12alkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; ammonium or R6 is hydrogen, C1-C12alkyl, C5-C8cycloalkyl, C7-C9phenylalkyl, ammonium or R7 is C2-C16alkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; or is -(CH2)q-CO2R6, R8 is C1-C4alkyl, M is an alkali metal, alkaline earth metal or aluminium, X1 is a direct bond, C1-C6alkylene, C2-C6alkylene which is interrupted by oxygen or sulfur; or is or where R1 and R2 are as defined above, X2 is oxygen or -NH-, X3 is C1-C5alkylene, m is 1 or 2, n is an integer from the range from 1 to 4, p is 1 or 2, q is 1 or 2, r is 1, 2 or 3, and, if n is 1, R3 is hydrogen, C1-C18alkyl, C5-C8cycloalkyl, phenyl which is unsubstituted or is substituted by C1-C4alkyl; and, if X2 is oxygen, R3 is additionally ammonium or if n is 2 R3 is C2-C10alkylene, C4-C10alkylene which is interrrupted by oxygen or sulfur, or, if n is 3, R3 is or, if n is 4, R3 is C4-C8alkanetetrayl. A carrier-bound compound according to claim 1, wherein R1 is C1-C10alkyl, C5-C6cycloalkyl, phenyl or benzyl, R2 is C1-C10alkyl, C5-C6cycloalkyl, phenyl or benzyl, R4 is hydrogen, C1-C10alkyl, phenyl, ammonium or R5 is hydrogen, C1-C10alkyl, phenyl, ammonium or R6 is hydrogen, C1-C10alkyl, C5-C6cycloalkyl, benzyl, ammonium or R7 is C4-C14alkyl, phenyl or -(CH2)q-CO2R6, R8 is methyl, M is an alkali metal, alkaline earth metal or aluminium, X1 is a direct bond, C1-C4alkylene, C2-C6alkylene which is interrupted by sulfur; or is or , where R1 and R2 are as defined above, X2 is oxygen, X3 is C1-C4alkylene, m is 1 or 2, n is an integer from the range from 1 to 4, p is 2, q is 2, r is 1, 2 or 3, and, if n is 1, R3 is hydrogen, C1-C12alkyl, C5-C6cycloalkyl, phenyl, ammonium or if n is 2, R3 is C2-C8alkylene, C4-C10alkylene which is interrupted by oxygen, or, if n is 3, R3 is or, if n is 4, R3 is A carrier-bound compound according to claim 1, wherein R1 is tert-butyl, R2 is C1-C4alkyl and is ortho to the OH group, and m is 1. A carrier-bound compound according to claim 1, wherein R9 is hydrogen, methyl, C8-C12-alkoxy, cyclohexyloxy or benzyl. A carrier-bound compound according to claim 1, wherein R6 is hydrogen, C1-C10alkyl, C5-C6cycloalkyl, benzyl, ammonium or R9 is hydrogen, C1-C4alkyl, O•, OH, NO, C4-C18alkoxy, C5-C7cycloalkoxy, C2-C6acyl, C7-C9phenylalkyl which is unsubstituted or is substituted on the phenyl ring by C1-C4alkyl, R10 is or -X6-COOR6, R11 is hydrogen or C1-C12alkyl, R12 is C1-C12alkyl or C6-C14alkenyl, R13 is hydrogen or methyl, M is an alkali metal or an alkaline earth metal, X4 is oxygen or -NR11-, X5 is a direct bond, C1-C6alkylene, C2-C6alkenylene, X6 is C1-C12alkylene, C2-C12alkenylene, C2-C12alkylene which is interrupted by oxygen; or is phenylene, and r is 1 or 2. A carrier-bound compound according to claim 1, wherein R6 is hydrogen, C1-C8alkyl, cyclohexyl or R9 is hydrogen, C1-C4alkyl, C4-C18alkoxy, C5-C7cycloalkoxy, C2-C6acyl or C7-C9phenylalkyl, R10 is or -X6-COOR6, R11 is hydrogen or C1-C8alkyl, R12 is C1-C8alkyl or C6-C14alkenyl, R13 is hydrogen or methyl, M is an alkali metal or an alkaline earth metal, X4 is oxygen or -NR11-, X5 is a direct bond, C1-C6alkylene, X6 is C1-C8alkylene, C2-C8alkenylene, C2-C8alkylene which is interrupted by oxygen; or is phenylene, and r is 1 or 2. A carrier-bound compound according to claim 1, wherein R1 is C1-C6alkyl, cyclohexyl or phenyl, R2 is C1-C6alkyl, cyclohexyl or phenyl and is ortho to the OH group, R3 is hydrogen, C1-C8alkyl, cyclohexyl or R4 is hydrogen, C1-C8alkyl or R5 is hydrogen, C1-C8alkyl or R6 is hydrogen, C1-C8alkyl, cyclohexyl or R7 is C8-C14alkyl or - (CH2)q-CO2R6, R8 is methyl, R9 is hydrogen, C1-C4alkyl, C4-C12alkoxy, C5-C7cycloalkoxy, acetyl or C7-C9phenylalkyl, R10 is or -X6-COOR6, R11 is hydrogen or C1-C4alkyl, R12 is C8-C14alkenyl, R13 is hydrogen or methyl, M is an alkali metal or alkaline earth metal, Xi is C2-C4alkylene, C2-C4alkylene which is interrupted by sulfur; or is, X2 is oxygen, X3 is C1-C4alkylene, X4 is oxygen or -NR11-, X5 is a direct bond, C1-C4alkylene, or or X6 is C1-C4alkylene or phenylene, m is 1 or 2, n is 1, p is 2, q is 2, and r is 1 or 2. A carrier-bound compound according to claim 1, wherein R1 is tert-butyl, R2 is C1-C4alkyl and is ortho to the OH group, R3 is hydrogen or C1-C4alkyl, R4 is hydrogen, C1-C4alkyl or R5 is hydrogen, C1-C4alkyl or R6 is hydrogen, R7 is C10-C12alkyl, R9 is hydrogen, methyl, C8-C12alkoxy, cyclohexyloxy or benzyl, R10 is or -X6-COOR6, R11 is hydrogen, R12 is C10-C12alkenyl, M is calcium, X1 is ethylene, or ethylene which is interrupted by sulfur, X2 is oxygen, X3 is methylene, X4 is oxygen or -NR11-, X5 is ethylene or [!rdurule!]CH―R12, X6 is methylene, m is 1, n is 1, p is 2, and r is 2. A carrier-bound compound according to claim 1, wherein the carrier is aluminium oxide, magnesium oxide, titanium oxide, silicon oxide, talc, calcium carbonate or dolomite. A carrier-bound compound according to claim 1, wherein the compounds of the formula I, II, III and/or IV, relative to the weight of the carrier, are present in a quantity of from 0.01 to 10% by weight. A composition comprising a) an organic material which is subject to oxidative, thermal or light-induced degradation and b) at least one carrier-bound compound of the formula I, II, III and/or IV according to claim 1. A composition according to claim 13, wherein component (b) is present in a quantity of from 1 to 50% based on the weight of component (a). A composition according to claim 13, additionally comprising further additives besides components (a) and (b). A composition according to claim 15, comprising as further additives phenolic antioxidants, light stabilizers and/or processing stabilizers. A composition according to claim 13, comprising as further additive at least one compound of the type of the 2-benzofuranones. A composition according to claim 13, comprising as component (a) natural, semisynthetic or synthetic polymers. A composition according to claim 13, comprising as component (a) a natural or semisynthetic polymer for papermaking. A composition according to claim 13, comprising as component (a) thermoplastic polymers. A composition according to claim 13, comprising as component (a) a polyolefin. A composition according to claim 13, comprising as component (a) polyethylene or polypropylene. A composition according to claim 13, comprising as component (a) asphalt, bitumen or a bituminous material. Use of carrier-bound compounds of the formula I, II, III and/or IV according to claim 1 as fillers and stabilizers for organic materials against oxidative, thermal or light-induced degradation. Use according to claim 24 as processing stabilizers (heat stabilizers) in thermoplastic polymers. A method of stabilizing an organic material against oxidative, thermal or light-induced degradation, which comprises incorporating in or applying to this material at least one carrier-bound compound of the formula I, II, III and/or IV as defined in claim 1. A method of introducing a filler into an organic material, which comprises first coating the filler, prior to its introduction into the organic material, with a compound of the formula I, II, III and/or IV as defined in claim 1.