US4501848A
Expired / Lapsed
US
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Vinylidene chloride copolymer-based molding compound
Assignee: Lyondell Chemical Technology LP
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Filing: 1984-05-24
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Granted: 1985-02-26
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Expires: 2004-05-24
Abstract
Abstract The incorporation of a high melt flow rate propylene-based polymer additive into a vinylidene chloride copolymer-based molding compound serves to retard the fusion rate of the resulting compound during processing.
Inventors
- 👤 Larry G. Bourland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:43
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/08; C08L23/00; C08L23/02; C08L23/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
118 words
A molding compound comprising: (a) a vinylidene chloride copolymer resin and (b) from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin of a high melt flow rate isotactic propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 2
Dependent Claim
118 words
A molding compound comprising: (a) a vinylidene chloride copolymer resin and (b) from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin of a high melt flow rate isotactic propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 3
Dependent Claim
32 words
The molding compound of claim 1 in which said high melt flow rate propylene-based polymer has a melt flow rate of at least 900 grams/10 minutes measured using A.S.T.M. D-1238-79 Condition L.
Claim 4
Dependent Claim
27 words
The molding compound of claim 1 in which said high melt flow rate propylene-based polymer has a peak molecular weight of from about 15,000 to about 60,000.
Claim 5
Dependent Claim
19 words
The molding compound of claim 1 in which said high melt flow rate propylene-based polymer is a propylene homopolymer.
Claim 6
Dependent Claim
19 words
The molding compound of claim 1 in which said high melt flow rate propylene-based polymer is a propylene-ethylene copolymer.
Claim 7
Dependent Claim
9 words
The molding compound of claim 1 comprising a stabilizer.
Claim 8
Dependent Claim
9 words
The molding compound of claim 1 comprising a plasticizer.
Claim 9
Dependent Claim
40 words
The molding compound of claim 1 in which said high melt flow rate propylene-based polymer is employed in an amount within the range of from about 0.5 to about 5 parts per each 100 parts of vinylidene chloride copolymer resin.
Claim 10
Dependent Claim
46 words
The molding compound of claim 1 in which said vinylidene chloride copolymer resin is a copolymer or terpolymer of recurring units of vinylidene chloride and at least one polymerizable comonomer selected from the group consisting of vinyl chloride, acrylic and methacrylic acid esters, acrylonitrile, and butadiene.
Claim 11
Dependent Claim
17 words
The molding compound of claim 1 in which said vinylidene chloride copolymer is vinylidene chloride/vinyl chloride copolymer.
Claim 12
Independent Claim
161 words
A method of retarding the fusion rate of a vinylidene chloride copolymer-based molding compound comprising a vinylidene chloride copolymer resin which method comprises incorporating into the vinylidene chloride copolymer-based molding compound a high melt flow rate isotactic propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, the high melt flow rate propylene-based polymer being employed in an amount from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin so as to retard the fusion rate of the molding compound upon processing said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 13
Independent Claim
161 words
A method of retarding the fusion rate of a vinylidene chloride copolymer-based molding compound comprising a vinylidene chloride copolymer resin which method comprises incorporating into the vinylidene chloride copolymer-based molding compound a high melt flow rate isotactic propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, the high melt flow rate propylene-based polymer being employed in an amount from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin so as to retard the fusion rate of the molding compound upon processing said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 14
Independent Claim
130 words
A method of producing a molded compound which comprises forming a molding compound comprising a vinylidene chloride copolymer resin and from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin of a high melt flow rate propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, and molding the resulting compound, said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 15
Independent Claim
130 words
A method of producing a molded compound which comprises forming a molding compound comprising a vinylidene chloride copolymer resin and from about 0.1 to about 10 parts per each 100 parts of vinylidene chloride copolymer resin of a high melt flow rate propylene-based polymer containing 0 to 15 mole % recurring units of an olefinic comonomer having the general formula: CH.sub.2 =CRR.sup.1 wherein R is a member selected from the group consisting of hydrogen and aromatic and aliphatic hydrocarbon groups containing 2 to 20 carbon atoms and R 1 is a member selected from the group consisting of hydrogen and methyl, and molding the resulting compound, said high melt flow rate propylene based polymer having a melt flow rate of at least 300 grams/10 minutes measured using ASTMD-1238-79 Condition L.
Claim 16
Dependent Claim
14 words
The method of claim 12 which a stabilizer is incorporated, into the molding compound.
Claim 17
Dependent Claim
13 words
The method of claim 12 in which a plasticizer into the molding compound.
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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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |