# US 8,772,382 B2 · Heavy metal-free stabilizer composition for halogenated polymers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,382 B2 - Document ID: US8772382B2 - Status: Granted - Kind: B2 - Application number: 13/131,232 - Filed: 2009-11-26 - Published: 2011-12-22 - Granted: 2014-07-08 - Earliest claimed: 2008-11-26 - Assignees: Chemson Polymer-Additive AG - Applicants: Bernhard Pelzl; Michael Schiller; Hendrik Willem Huisman - Inventors: Bernhard Pelzl; Michael Schiller; Hendrik Willem Huisman - Web page: https://patentgrep.com/patent/US8772382B2 ## CPC - C08K 5/3492: Triazines - Y10T 428/139: Open-ended, self-supporting conduit, cylinder, or tube-type article - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention relates to a stabilizer composition for halogen-containing polymers which is free from heavy metals, the use thereof in the stabilizing of halogen-containing polymers, in particular against an undesirable pink coloration, and shaped articles comprising this stabilizer composition. ## Claims ### Claim 1 A halogen-containing polymer comprising an isocyanurate-based stabilizer composition which is free from heavy metals, said isocyanurate-based stabilizer composition comprising, as main components, at least one isocyanurate, at least one dihydropyridine and at least one perchlorate salt, wherein the amount present of the isocyanurate is 0.5 to 1.2 phr (parts per hundred of resin), the amount present of the dihydropyridine is 0.1 to 0.5 phr and the amount present of the perchlorate salt is 0.05 to 0.20 phr, and wherein the amount present of any other stabilizing component that may be present is in each case smaller than that of each of the main components. ### Claim 2 (depends on 1) The polymer of claim 1, wherein the at least one isocyanurate is a compounds having the structure of formula (I) wherein R1, R2 and R3 independently of each other are hydrogen, optionally substituted C1-C18 alkyl, optionally substituted C2-C6 alkenyl, optionally substituted C1-C4 alkoxy, optionally substituted C5-C8 cycloalkyl, optionally substituted C3-C8 alkylcycloalkyl or optionally substituted C5-C10 aryl, and wherein each X independently is S or O. ### Claim 3 (depends on 2) The polymer of claim 2, wherein R1, R2 and R3 independently of each other are selected from the group consisting of —CH3, —CH2CH3, —CH2CH2CH3, —CH2OH, —CH2CH2OH, —CH2CH2CH3, —CH2CH2CH2OH and —CH2(C2H3O). ### Claim 4 (depends on 2) The polymer of claim 2, wherein X═O. ### Claim 5 (depends on 1) The polymer of claim 1, wherein the at least one isocyanurate is selected from the group consisting of ### Claim 6 (depends on 1) The polymer of claim 1, wherein the at least one dihydropyridine is selected from the group consisting of compounds having the structures of formula (II) and (III) wherein R4, R5, R6, R7 and R8 independently of each other are H, optionally substituted C1-C18 alkyl, optionally substituted C2-C6 alkenyl, optionally substituted C1-C4 alkoxy, optionally substituted C5-C8 cycloalkyl or optionally substituted C5-C10 aryl; Y is C1-C18 alkyl, wherein one or more carbons can be substituted by O or S; and n is an integer from 1 to 5. ### Claim 7 (depends on 6) The polymer of claim 6, wherein R4, R5, R6, R7 and R8 are each independently selected from the group consisting of —CH3, —C2H5, —C8H17, —C16H33, —C17H35, —C18H37, —C6H5, —OCH3, —OC2H5, and —OC12H25. ### Claim 8 (depends on 6) The polymer of claim 6, wherein Y is selected from the group consisting of (CH2)x, (CH2)x—O—(CH2)y and (CH2)x—S—(CH2)y, wherein x and y independently are an integer from 1 to 10. ### Claim 9 (depends on 6) The polymer of claim 6, wherein the at least one dihydropyridine is selected from the group consisting of ### Claim 10 (depends on 1) The polymer of claim 1, wherein the at least one perchlorate is selected from the group consisting of the compounds of formulae (IV) and (V), M(ClO4)k (IV) MxAl2(OH)2x+4(CO3)1−z/2(ClO4)z.mH2O (V) wherein M is Li, Na, K, Mg, Ca or Al; k is an integer from 1 to 3; x is an integer from 1 to 6; and z is a number in the range of from 0.01 to 2. ### Claim 11 (depends on 10) The polymer of claim 10, wherein the perchlorate is selected from the group consisting of NaClO4, Ca(ClO4)2, Mg(ClO4)2 and Al(ClO4)3. ### Claim 12 (depends on 11) The polymer of claim 11, wherein the perchlorate is present in an amount of approximately 0.1 parts per 100 parts of resin (phr). ### Claim 13 (depends on 11) The polymer of claim 11, wherein the perchlorate is NaClO4. ### Claim 14 (depends on 1) The polymer of claim 1, which additionally contains at least one co-stabilizer. ### Claim 15 (depends on 1) The polymer of claim 1, further comprising one or more components selected from the group consisting of primary stabilizers, zeolites, antioxidants, fillers, plasticizers, dyestuffs, pigments, antistatic agents, surface-active agents, foaming agents, impact modifiers and UV stabilizers. ### Claim 16 (depends on 1) The polymer of claim 1, wherein the halogen-containing polymer is polyvinyl chloride (PVC). ### Claim 17 (depends on 1) The polymer of claim 1, wherein the stabilizer composition contains no uracils and/or aminocrotonates. ### Claim 18 (depends on 1) A method for stabilizing halogen-containing polymers comprising adding the stabilizer composition of claim 1 to a halogen-containing polymer. ### Claim 19 (depends on 18) The method of claim 18, wherein the stabilization is against the action of light. ### Claim 20 (depends on 18) The method of claim 18, wherein the halogen-containing polymer is polyvinyl chloride (PVC). ### Claim 21 (depends on 1) A shaped article of manufacture comprising a halogen-containing polymer of claim 1. ### Claim 22 (depends on 21) The shaped article of claim 21, wherein the shaped article of manufacture is selected from the group consisting of window profiles, pipes, floor coverings, roofing felts, cable and films. ### Claim 23 (depends on 1) The polymer of claim 1, wherein the at least one isocyanurate is