Abstract: The present invention pertains to a reversibly thermochromic system comprising a substituted or an unsubstituted 6,11-dihydroxy-naphthacene-5,12-dione and a base and to a reversibly thermochromic composition comprising the reversibly thermochromic system and a carrier material and to novel substituted 6,11-dihydroxy-naphthacene-5,12-diones.

Abstract: A compound of the formula (I) wherein n is preferably 3; G1, G2, G3 and G4 are independently of one another e.g. C1–C4alkyl; A1 is e.g. hydrogen or methyl; A2 is e.g. methylene; A3? and A3? are e.g. C1–C4alkyl; A4 is e.g. C1–C8alkyl; Y is e.g. a group of the formula (IV) ?wherein R1 is e.g. hydrogen or methyl, R2 is e.g. methylene, R3? and R3? are e.g. C1–C4alkyl and R4 is e.g. hydrogen or C1–C8alkyl; and Z is e.g. a group of the formula (VI) ?with A10? and A10? being independently of one another e.g. hydrogen or C1–C4alkyl and A11? and A11? being independently of one another e.g. C2–C6alkylene, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.

Abstract: The instant invention discloses a process for the preparation of compounds of the formula I: wherein the general symbols are as defined in claim 1, which process comprises reacting a compound of formula II: wherein the general symbols are as defined in claim 1, with a compound of the formula III: wherein R5 is as defined in claim 1. The compounds of the formula II are new and useful as stabilizers for protecting organic materials, in particular synthetic polymers, reprographic materials or coating materials against oxidative, thermal or light-induced degradation.

Abstract: The instant invention discloses a process for preparation of compounds of the formula (I), wherein the general symbols are as defined in claim 1, which process comprises reacting a compound of formula (II), wherein the general symbols are as defined in claim 1, with a compound of the formula (III), wherein R5 is as defined in slaim 1. The compounds of the formula (II) are new and useful as stabilizers for protecting organic materials, in particular synthetic polymers, reprographic materials or coating materials against oxidative, thermal or light-induced degradation.

Abstract: Compounds of the formula (I) wherein p is zero or 1; q and r, independently of each other, are an integer from 1 to 6; and s is a number ranging from 1 to 8; X is —O— or, when p is 1, X is also a group Rw, Rx, Ry and Rz are, independently of each other, C1-C18alkyl, C5-C12cycloalkyl or C1-C5hydroxyalkyl, especially methyl; R1 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R1 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group —CH2CH(OH)—G, in which G is hydrogen, methyl or phenyl; R2 is hydrogen, C1-C8alkyl, C5-C12cycloalkyl or C1-C4hydroxyalkyl; R3, R4, R5 independently of each other

Abstract: A compound of formula (I) wherein n is e.g. a number from 2 to 50; R5′ and R5″ are e.g. a group of formula (II); G1, G2, G3 and G4 are e.g. C1-C4akyl; R1 is e.g. hydrogen or C1-C4alkyl; R2 is e.g. methylene; R3′ is e.g. hydrogen and R3″ is e.g. hydrogen or C1-C4alkyl; R4 is e.g. C2-C8alkylene; and X is e.g. —N(R7)R8) with R7 and R8 being independently of one another hydrogen or C1-C8alkyl, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.

Abstract: The invention relates to new compounds containing 1-8 active groups of the type 3,3,6,6-polysubstituted 2-morpholinone and having the formula F (A′—Z)m—X  (F), wherein m is a number from 1 to 8; X is an organic anchor group of valency m and in case that m is not 1, X may also be a direct bond, SO2, P or PO; A′ is a monovalent group of the formula E  containing one linking group; Z is a direct bond, —O—, —S—, —SO—, —SO2— or —NR′14—; provided that Z is —O—, —S—, —SO—, —SO2— or —NR′14— if m is 1 and the linking group in formula E is G3 or G5; G1 is hydrogen; C1-C18alkyl; C2-C18alkyl substituted by OH and/or phenyl; oxyl; OH; C2-C12cyanoalkyl; C2-C12cyanoalkoxy; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C3-C8alkenyloxy; C7-C12phenylalkyl; C7-C12phenylalkyl substituted by hydroxy, C1-C4alkyl and/or C1-C4

Abstract: A compound of the formula (I) 1

Abstract: Compounds of the formula (I) 1

Abstract: The invention relates to new compounds containing 1-8 active groups of the type 3,3,6,6-polysubstituted 2-morpholinone and having the formula F(A'--Z).sub.m --X (F),wherein m is a number from 1 to 8;X is an organic anchor group of valency m and in case that m is not 1, X may also be a direct bond, SO.sub.2, P or PO;A' is a monovalent group of the formula E ##STR1## containing one linking group; Z is a direct bond, --O--, --S--, --SO--, --SO.sub.2 -- or --NR'.sub.14 --; provided that Z is --O--, --S--, --SO--, --SO.sub.2 -- or --NR'.sub.14 -- if m is 1 and the linking group in formula E is G.sub.3 or G.sub.5 ;G.sub.1 is hydrogen; C.sub.1 -C.sub.18 alkyl; C.sub.2 -C.sub.18 alkyl substituted by OH and/or phenyl; oxyl; OH; C.sub.2 -C.sub.12 cyanoalkyl; C.sub.2 -C.sub.12 cyanoalkoxy; C.sub.1 -C.sub.18 alkoxy; C.sub.5 -C.sub.12 cycloalkoxy; C.sub.3 -C.sub.8 alkenyl; C.sub.3 -C.sub.8 alkynyl; C.sub.3 -C.sub.8 alkenyloxy; C.sub.7 -C.sub.12 phenylalkyl; C.sub.7 -C.sub.12 phenylalkyl substituted by hydroxy, C.sub.1 -C.