US4000100A
Expired / Lapsed
US
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Thermal and light stabilized polyvinyl chloride resins
Assignee: WR Grace and Co Conn
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Filing: 1971-06-04
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Granted: 1976-12-28
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Expires: 1991-06-04
Abstract
Abstract This invention comprises the polyvinyl chloride stabilizer composition of an unactivated Zeolite A molecular sieve or an unactivated naturally occurring molecular sieve of essentially the same pore size range as Zeolite A and a conventional inorganic, organometallic or organic stabilizer, or mixture of these stabilizers. An unactivated zeolite molecular sieve has adsorbed water molecules. The combination of the unactivated zeolite molecular sieve and the conventional stabilizer produces a resin of greater stability than that produced by either of the components when used separately.
Inventors
- 👤 Henry Baldyga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:18
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/18; C08K3/24; C08K5/00; C08K5/0008; C08K5/005; C08K5/04; C08K5/09; C08K5/49; C08K5/51; C08K5/53; C08K5/56
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
53 words
A polyvinyl chloride stabilizing composition consisting essentially of an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A, zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, in admixture with at least a second polyvinyl chloride stabilizing component.
Claim 2
Dependent Claim
53 words
A polyvinyl chloride stabilizing composition consisting essentially of an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A, zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, in admixture with at least a second polyvinyl chloride stabilizing component.
Claim 3
Dependent Claim
26 words
A polyvinyl chloride stabilizing composition as in claim 1 wherein said unactivated crystalline zeolite is selected from the group consisting of zeolite 3A and zeolite 4A.
Claim 4
Dependent Claim
58 words
A polyvinyl chloride stabilizing composition as in claim 1 consisting essentially of a crystalline zeolite selected from the group consisting of zeolite 3A and zeolite 4A, in admixture with a second polyvinyl chloride stabilizing component which contains a cation selected from the group consisting of lead, tin, cadmium, zinc, lithium, sodium, calcium, magnesium, strontium, barium and mixtures thereof.
Claim 5
Dependent Claim
44 words
A polyvinyl chloride stabilizing composition as in claim 3 wherein the cation containing component is selected from the group consisting of organolead compounds, organotin compounds, organocadmium compounds, organobarium compounds, organostrontium compounds, organozinc compounds, organobarium compounds, organocalcium compounds, organolithium compounds, organosodium compounds and mixtures thereof.
Claim 6
Dependent Claim
17 words
A polyvinyl chloride stabilizing composition as in claim 4 wherein said cation containing component contains organotin compounds.
Claim 7
Dependent Claim
17 words
A polyvinyl chloride stabilizing composition as in claim 4 wherein said cation containing component contains organocadium compounds.
Claim 8
Dependent Claim
17 words
A polyvinyl chloride stabilizing composition as in claim 4 wherein said cation containing component contains organobarium compounds.
Claim 9
Dependent Claim
33 words
A polyvinyl chloride stabilizing composition as in claim 1 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of pentaerythritol, glycerol, ethylene glycol, orthoesters, glycidyl ethers and mixtures thereof.
Claim 10
Dependent Claim
19 words
A polyvinyl chloride stabilizing composition as in claim 8 wherein said second polyvinyl chloride stabilizing component is an orthoester.
Claim 11
Dependent Claim
61 words
A stabilized polyvinyl chloride resin composition comprising polyvinyl resin having dispersed therein a stabilizing composition consisting essentially of an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A, zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, and at least a second polyvinyl chloride stabilizing component.
Claim 12
Dependent Claim
61 words
A stabilized polyvinyl chloride resin composition comprising polyvinyl resin having dispersed therein a stabilizing composition consisting essentially of an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A, zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, and at least a second polyvinyl chloride stabilizing component.
Claim 13
Dependent Claim
27 words
A stabilized polyvinyl chloride resin composition as in claim 10 wherein said unactivated crystalline zeolite is selected from the group consisting of zeolite 3A and zeolite 4A.
Claim 14
Dependent Claim
67 words
A stabilized polyvinyl chloride resin composition as in claim 10 comprising polyvinyl chloride resin having dispersed therein a stabilizing composition consisting essentially of a crystalline zeolite selected from the group consisting of zeolite 3A and zeolite 4A, and a second polyvinyl chloride stabilizing component which contains a cation selected from the group consisting of lead, tin, cadmium, zinc, lithium, sodium, calcium, magnesium, strontium, barium and mixtures thereof.
Claim 15
Dependent Claim
45 words
A stabilized polyvinyl chloride resin composition as in claim 12 wherein the cation containing component is selected from the group consisting of organolead compounds, organotin compounds, organocadmium compounds, organobarium compounds, organostrontium compounds, organozinc compounds, organobarium compounds, organocalcium compounds, organolithium compounds, organosodium compounds and mixtures thereof.
Claim 16
Dependent Claim
18 words
A stabilized polyvinyl chloride resin composition as in claim 13 wherein said cation containing component contains organotin compounds.
Claim 17
Dependent Claim
18 words
A stabilized polyvinyl chloride resin composition as in claim 13 wherein said cation containing component contains organocadmium compounds.
Claim 18
Dependent Claim
18 words
A stabilized polyvinyl chloride resin composition as in claim 13 wherein said cation containing component contains organobarium compounds.
Claim 19
Dependent Claim
34 words
A stabilized polyvinyl chloride resin composition as in claim 10 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of pentaerythritol, glycerol, ethylene glycol, orthoesters, glycidyl ethers and mixtures thereof.
Claim 20
Dependent Claim
20 words
A stabilized polyvinyl chloride resin composition as in claim 17 wherein said second polyvinyl chloride stabilizing component is an orthoester.
Claim 21
Dependent Claim
29 words
A stabilized polyvinyl chloride resin composition as in claim 17 wherein said second stabilizing component is selected from the group consisting of arylphosphites, alkylphosphites, alkarylphosphites, alkarylphosphites and mixtures thereof.
Claim 22
Independent Claim
56 words
A method of stabilizing polyvinyl chloride resins comprising compounding into said resins an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A and zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, and at least a second polyvinyl chloride stabilizing component.
Claim 23
Independent Claim
56 words
A method of stabilizing polyvinyl chloride resins comprising compounding into said resins an unactivated crystalline zeolite which contains about 18 to 25 percent by weight water and is selected from the group consisting of zeolite 3A, zeolite 4A and zeolite 5A, chabazite, erionite, clinoptilolite, stilbite and heulandite, and at least a second polyvinyl chloride stabilizing component.
Claim 24
Dependent Claim
30 words
A method of stabilizing polyvinyl chloride resins as in claim 20 wherein said unactivated crystalline zeolite is selected from the group consisting of unactivated zeolite 3A and unactivated zeolite 4A.
Claim 25
Dependent Claim
42 words
A method of stabilizing polyvinyl chloride resins as in claim 21 comprising compounding into said resins a second stabilizing component which contains a cation selected from the group consisting of lead, tin, cadmium, lithium, sodium, magnesium, strontium, barium, calcium and mixtures thereof.
Claim 26
Dependent Claim
46 words
A method of stabilizing polyvinyl chloride resins as in claim 22 wherein the cation containing component is selected from the group consisting of organolead compounds, organotin compounds, organocadmium compounds, organobarium compounds, organostrontium compounds, organozinc compounds, organobarium compounds, organocalcium compounds, organolithium compounds, organosodium compounds and mixtures thereof.
Claim 27
Dependent Claim
19 words
A method of stabilizing polyvinyl chloride resins as in claim 23 wherein said cation containing component contains organotin compounds.
Claim 28
Dependent Claim
19 words
A method of stabilizing polyvinyl chloride resins as in claim 23 wherein said cation containing component contains organocadmium compounds.
Claim 29
Dependent Claim
19 words
A method of stabilizing polyvinyl chloride resins as in claim 23 wherein said cation containing component contains organobarium compounds.
Claim 30
Dependent Claim
35 words
A method of stabilizing polyvinyl chloride resins as in claim 20 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of pentaerythritol, glycerol, ethylene glycol, orthoesters, glycidyl ethers and mixtures thereof.
Claim 31
Dependent Claim
21 words
A method of stabilizing polyvinyl chloride resins as in claim 27 wherein said second polyvinyl chloride stabilizing component is an orthoester.
Claim 32
Dependent Claim
31 words
A method of stabilizing polyvinyl chloride resins as in claim 27 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of arylphosphites alkylphosphites, alkarylphosphites, and mixtures thereof.
Claim 33
Dependent Claim
35 words
A molded polyvinyl chloride plastic article containing a first stabilizing component selected from the group consisting of unactivated Zeolite 3A, unactivated zeolite 4A and unactivated 5A and at least a second polyvinyl chloride stabilizing component.
Claim 34
Dependent Claim
35 words
A molded polyvinyl chloride plastic article containing a first stabilizing component selected from the group consisting of unactivated Zeolite 3A, unactivated zeolite 4A and unactivated 5A and at least a second polyvinyl chloride stabilizing component.
Claim 35
Dependent Claim
27 words
A polyvinyl chloride stabilizing composition as in claim 1 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of arylphosphites, alkylphosphites and alkarylphosphites.
Claim 36
Dependent Claim
28 words
A stabilized polyvinyl chloride resin composition as in claim 10 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of arylphosphites, alkylphosphites and alkarylphosphites.
Claim 37
Dependent Claim
29 words
A method of stabilizing polyvinyl chloride resins as in claim 20 wherein said second polyvinyl chloride stabilizing component is selected from the group consisting of arylphosphites, alkylphosphites and alkarylphosphites.
References Cited (Backward Citations)
US3245946A
Cited
US3313825A
Cited
US3518226A
Cited
US3539636A
Cited
US3454514A
Cited
US3533975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |