US4590233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polyvinyl chloride
Assignee: Henkel AG and Co KGaA
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Filing: 1984-12-14
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Granted: 1986-05-20
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Expires: 2004-12-14
Abstract
Abstract In a stabilized polyvinyl chloride molding mixture containing a stabilizer combination based upon alkali metal, alkaline earth metal, and/or zinc soaps, co-stabilizers, powdered, crystalline, hydrous aluminosilicate, and flow promoters, as well as optionally additional conventional additives, the improvement which comprises, per 100 parts by weight of polyvinyl chloride, (a) from about 0.2 to 5 parts by weight of a synthetic, crystalline, powdered alkali metal aluminosilicate containing from about 13 to 25 percent by weight of water of crystallization; and (b) from about 0.1 to 5 parts by weight of at least one co-stabilizer selected from the group consisting of β-diketones, α-ketoenol esters, α-acyllactones, substituted 1,4-dihydropyridine-3,5-dicarboxylic acids, and pyrrole, the pyrrole being unsubstituted or substituted.
Inventors
- 👤 Werner Erwied
- 👤 Bernd Wegemund
- 👤 Peter Wedl
- 👤 Kurt Worschech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:38
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/04; C08K5/07; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
218 words
In a stabilized polyvinyl chloride molding mixture containing a stabilizer combination based upon alkali metal, alkaline earth metal, and/or zinc soaps, powdered, crystalline, hydrous aluminosilicate, and flow promoters, the improvement which comprises, per 100 parts by weight of polyvinyl chloride, (a) from about 0.2 to 5 parts by weight of a synthetic, crystalline, powdered alkali metal aluminosilicate containing from about 13 to 25 percent by weight of water of crystallization, which has the composition 0.7-1.1Me.sub.2 O.Al.sub.2 O.sub.3.1.3-2.4SiO.sub.2 wherein Me represents an alkali metal, with respect to the anhydrous form; and (b) from about 0.1 to 5 parts by weight of at least one compound selected from the group consisting of β-diketones of the formula R.sup.1 --CO--CHR.sup.2 --CO--R.sup.3 wherein R 1 and R 3 , which may be identical or different, each represent a linear or branched alkyl or alkenyl having from 1 to 36 carbon atoms, an aralkyl having from 7 to 36 carbon atoms, or an aryl or cycloaliphatic having less than 14 carbon atoms, the cycloaliphatic group optionally being olefinically unsaturated and R 1 and R 3 being unsubstituted or substituted, and R 2 represents hydrogen or an alkyl or alkenyl of from 1 to 36 carbon atoms, and R 1 and R 2 may form a divalent alkylene with from 2 to 5 carbon atoms.
Claim 2
Dependent Claim
218 words
In a stabilized polyvinyl chloride molding mixture containing a stabilizer combination based upon alkali metal, alkaline earth metal, and/or zinc soaps, powdered, crystalline, hydrous aluminosilicate, and flow promoters, the improvement which comprises, per 100 parts by weight of polyvinyl chloride, (a) from about 0.2 to 5 parts by weight of a synthetic, crystalline, powdered alkali metal aluminosilicate containing from about 13 to 25 percent by weight of water of crystallization, which has the composition 0.7-1.1Me.sub.2 O.Al.sub.2 O.sub.3.1.3-2.4SiO.sub.2 wherein Me represents an alkali metal, with respect to the anhydrous form; and (b) from about 0.1 to 5 parts by weight of at least one compound selected from the group consisting of β-diketones of the formula R.sup.1 --CO--CHR.sup.2 --CO--R.sup.3 wherein R 1 and R 3 , which may be identical or different, each represent a linear or branched alkyl or alkenyl having from 1 to 36 carbon atoms, an aralkyl having from 7 to 36 carbon atoms, or an aryl or cycloaliphatic having less than 14 carbon atoms, the cycloaliphatic group optionally being olefinically unsaturated and R 1 and R 3 being unsubstituted or substituted, and R 2 represents hydrogen or an alkyl or alkenyl of from 1 to 36 carbon atoms, and R 1 and R 2 may form a divalent alkylene with from 2 to 5 carbon atoms.
Claim 3
Dependent Claim
24 words
The molding mixture of claim 1, wherein the metal soaps are present in an amount of from about 0.1 to 5 parts by weight.
Claim 4
Dependent Claim
20 words
The molding mixture of claim 2, wherein the metal soaps comprise the salts of higher saturated or unsaturated fatty acids.
Claim 5
Dependent Claim
27 words
The molding mixture of claim 1, wherein the metal soaps comprise fatty acid soaps of calcium, zinc, and/or barium and barium is optionally present as the alkyl-phenolate.
Claim 6
Dependent Claim
22 words
The molding mixture of claim 1, wherein the powdered, crystalline, hydrous aluminosilicate has a particle size of from about 0.1 to 20μ.
Claim 7
Dependent Claim
16 words
The molding mixture of claim 5, wherein the particle size is from about 1 to 10μ.
Claim 8
Dependent Claim
25 words
The molding mixture of claim 1, wherein component (a) comprises sodium aluminosilicate with a water content of from about 18 to 25 percent by weight.
Claim 9
Dependent Claim
15 words
The molding mixture of claim 1, wherein component (a) is zeolite 4A containing bound water.
Claim 10
Dependent Claim
21 words
The molding mixture of claim 1, wherein from about 0.1 to 5 parts by weight of epoxidated soybean oil are present.
Claim 11
Dependent Claim
65 words
The molding mixture of claim 1, wherein from about 0.2 to 2.0 parts by weight of partial esters of fatty acids with from 8 to 22 carbon atoms and polyols with from 2 to 6 carbon atoms and from 2 to 6 hydroxyl groups, which have an average of at least one free polyol hydroxyl group, are present as a co-stabilizer with flow promoting properties.
Claim 12
Dependent Claim
39 words
The molding mixture of claim 1, wherein a wax ester formed from a monovalent acid with longer chains and corresponding alcohols and having a total of from about 28 to 70 carbon atoms, is present as a flow promoter.
Claim 13
Dependent Claim
17 words
The molding mixture of claim 11, wherein the ester has from about 30 to 50 carbon atoms.
Claim 14
Dependent Claim
14 words
The molding mixture of claim 1, wherein component (b) is a diacyl methane compound.
References Cited (Backward Citations)
US4000100A
Cited
DE2356695A1
Cited
US4102839A
Cited
US4123399A
Cited
US4116907A
Cited
US4221687A
Cited
US4267083A
Cited
US4290940A
Cited
US4338226A
Cited
US4371656A
Cited
FR2728865A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |