US4912159A
Expired / Lapsed
US
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Stabilizer mixture for molding compounds based on polymers of vinyl chloride; use of said mixture; and molding compounds
Assignee: Huels AG
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Filing: 1989-01-23
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Granted: 1990-03-27
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Expires: 2009-01-23
Abstract
Abstract A stabilizer mixture for molding compounds based on polymers of vinyl chloride; use of said mixture; and molding compounds is disclosed. The heretofore known physiologically unobjectionable stabilizer systems have the disadvantage of disagreeable odor, as well as inadequate initial stability. In addition to physiologically unobjectionable stabilizers (e.g., metal soaps, salts of aromatic carboxylic acids, or metal phenolates), co-stabilizers of the present invention are used, in the form of derivatives of thiosalicylic acid esters masked at the mercapto group by monothioacetal formation. The field of application is hard and soft PVCs.
Inventors
- 👤 Thomas Hildebrand
- 👤 Bruno Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/36; C08K5/37; C08K5/375
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
A stabilizer mixture for molding compounds based on polymers of vinyl chloride, which comprises a mixture containing at least one primary stabilizer and co-stabilizer which is a compound of formula I: ##STR3## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen.
Claim 2
Dependent Claim
136 words
A stabilizer mixture for molding compounds based on polymers of vinyl chloride, which comprises a mixture containing at least one primary stabilizer and co-stabilizer which is a compound of formula I: ##STR3## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen.
Claim 3
Independent Claim
176 words
A method of use of a stabilizer mixture containing at least one primary stabilizer and a co-stabilizer which is a compound of formula I: ##STR4## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen, which comprises incorporating 0.02-5 parts by weight of the compound of formula I per 100 parts by weight of a polymer of vinyl chloride and 0.05-5 parts by weight of the at least one primary stabilizer per 100 pats by weight of the polymer of vinyl chloride.
Claim 4
Independent Claim
176 words
A method of use of a stabilizer mixture containing at least one primary stabilizer and a co-stabilizer which is a compound of formula I: ##STR4## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen, which comprises incorporating 0.02-5 parts by weight of the compound of formula I per 100 parts by weight of a polymer of vinyl chloride and 0.05-5 parts by weight of the at least one primary stabilizer per 100 pats by weight of the polymer of vinyl chloride.
Claim 5
Dependent Claim
131 words
A stabilized molding composition comprising a polymer of vinyl chloride having incorporated therein a primary stabilizer and a co-stabilizer which is a compound of formula I: ##STR5## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen.
Claim 6
Dependent Claim
131 words
A stabilized molding composition comprising a polymer of vinyl chloride having incorporated therein a primary stabilizer and a co-stabilizer which is a compound of formula I: ##STR5## where R 1 and R 2 are each independently a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group, or R 1 is hydrogen, a C 6-12 aryl group or a C 6-12 substituted aryl group, and R 2 is a straight chain or branched C 1-20 alkyl or C 1-20 alkenyl group; R 3 and R 5 are each independently a straight chain or branched C 1-22 alkyl group; and R 4 is a straight chain or branched C 1-22 alkyl or C 1-22 alkenyl group or unsubstituted C 6-12 aryl group, a substituted C 6-12 aryl group, or hydrogen.
Claim 7
Dependent Claim
53 words
The stabilized molding compound according to claim 3, characterized in that, in formula I: R 1 and R 2 each represent a straight chain or branched alkyl or alkenyl group with 1-10 C atoms; and R 3 and R 5 each represent a straight chain or branched alkyl group with 4-10 C atoms.
Claim 8
Dependent Claim
54 words
The stabilized molding composition according to claim 4, characterized in that, in formula I: R 1 , R 2 and R 5 each represent a straight chain or branched alkyl group with 4-10 C atoms; R 3 represents a straight chain or branched alkyl group with 4-10 C atoms; and R 4 represents hydrogen.
Claim 9
Dependent Claim
23 words
A stabilized molding composition according to claim 3 wherein the primary stabilizer comprises at least one fatty acid salt of Ca or Zn.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
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