US5073584A
Expired / Lapsed
US
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Processing additive for halogen-containing polymers
Assignee: Chemson Polymer Additive AG
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Filing: 1989-12-18
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Granted: 1991-12-17
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Expires: 2009-12-18
Abstract
Abstract Proposed is a processing additive for halogen-containing polymers, in particular for polyvinyl chloride, with a content of a synthetic, crystalline, finely particulate alkali metal alumo silicate containing 13 to 25 percent by weight of bound water, which--in its anhydrous form--is of the composition (0.7-1.1) Me 2 O.Al 2 O 3 ×(1.3-2.4) SiO 2 , Me standing for an alkali metal, wherein the alkali metal alumo silicate is present in combination with at least one isocyanuric acid derivative of the formula ##STR1## wherein each n stands for an integer from 0 to 5, preferably from 0 to 3, each X represents H or a straight or branched alkyl group having 1 to 6 carbon atoms, preferably 1 or 2 carbon atoms, and each R is --OH or --COOH, and wherein the n's, X's and/or R's preferably have the same meaning, as well as halogen-containing polymers stabilized with use of this combination.
Inventors
- 👤 Peter Meszaros
- 👤 Peter Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
92 words
A process additive for halogen-containing polymers comprising the combination of a synthetic, crystalline finely-particulate alkali metal aluminosilicate of the formula (0.7-1.1) Me 2 O.Al 2 O 3 ×(1.3-2.4)SiO 2 containing 13 to 25 percent by weight of bound water, wherein Me is an alkali metal, and at least one isocyanuric derivative of the formula ##STR3## wherein each n is independently an integer from 0 to 5, each X is independently H or a straight or branched alkyl group containing 1 to 6 carbon atoms, and each R is independently --OH or --COOH.
Claim 2
Dependent Claim
92 words
A process additive for halogen-containing polymers comprising the combination of a synthetic, crystalline finely-particulate alkali metal aluminosilicate of the formula (0.7-1.1) Me 2 O.Al 2 O 3 ×(1.3-2.4)SiO 2 containing 13 to 25 percent by weight of bound water, wherein Me is an alkali metal, and at least one isocyanuric derivative of the formula ##STR3## wherein each n is independently an integer from 0 to 5, each X is independently H or a straight or branched alkyl group containing 1 to 6 carbon atoms, and each R is independently --OH or --COOH.
Claim 3
Dependent Claim
23 words
The processing additive according to claim 1 wherein each n of the isocyanuric acid derivative is independently an integer from 0 to 3.
Claim 4
Dependent Claim
30 words
The processing additive according to claim 1 wherein each X of the isocyanuric derivative is independently H or a straigth or branched alkyl group containing 1 or 2 carbon atoms.
Claim 5
Dependent Claim
31 words
The processing additive according to claim 1 wherein each n of the isocyanuric derivative has the same meaning, each X has the same meaning, and each R has the same meaning.
Claim 6
Dependent Claim
17 words
The processing additive according to claim 1 wherein each X is H in the isocyanuric acid derivative.
Claim 7
Dependent Claim
16 words
The processing additive according to claim 5 wherein the isocyanuric acid derivative is tris-(2-hydroxyethyl)-isocyanurate or tris-(2-carboxyethyl)-isocyanurate.
Claim 8
Dependent Claim
18 words
The processing additive according to claim 1 further comprising at least on metal soap as a primary stabilizer.
Claim 9
Dependent Claim
27 words
The processing additive according to claim 7 wherein the metal soap is selected from the group of metal soaps of Ba, Ca, Mg, Zn, and combinations thereof.
Claim 10
Dependent Claim
15 words
The processing additive according to claim 1 further comprising barium alkylphenolate as a primary stabilizer.
Claim 11
Dependent Claim
11 words
The processing additive according to claim 1 further comprising a lubricant.
Claim 12
Dependent Claim
12 words
The processing additive according to claim 1 further comprising epoxidized soybean oil.
Claim 13
Dependent Claim
13 words
The processing additive according to claim 1 further comprising a sterically hindered phenol.
Claim 14
Dependent Claim
14 words
A halogen-containing polymer stabilized by combination with a processing additive according to claim 1.
Claim 15
Dependent Claim
14 words
A stabilized halogen-containing polymer according to claim 13 wherein the polymer comprises polyvinyl chloride.
Claim 16
Dependent Claim
24 words
A stabilized halogen-containing polymer according to claim 13 wherein the alkali metal alumino-silicate comprises 0.2 to 5 percent by weight of the stabilized polymer.
Claim 17
Dependent Claim
24 words
A stabilized halogen-containing polymer according to claim 14 wherein the alkali metal alumino-silicate comprises 0.2 to 5 percent by weight of the stabilized polymer.
Claim 18
Dependent Claim
24 words
A stabilized halogen-containing polymer according to claim 13 wherein the isocyanuric acid derivative comprises 0.2 to 5 percent by weight of the stabilized polymer.
Claim 19
Dependent Claim
24 words
A stabilized halogen-containing polymer according to claim 14 wherein the isocyanuric acid derivative comprises 0.2 to 5 percent by weight of the stabilized polymer.
Claim 20
Dependent Claim
24 words
A stabilized halogen-containing polymer according to claim 15 wherein the isocyanuric acid derivative comprises 0.2 to 5 percent by weight of the stabilized polymer.
References Cited (Backward Citations)
JPS535057B2
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GB2037778A
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GB2037777A
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DE2941596A1
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DE3113442A1
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DE3247737A1
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DE3332003A1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |