US4085163A
Expired / Lapsed
US
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Multicomponent polyamide-block copolymer-polymer blends
Assignee: Shell USA Inc
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Filing: 1977-04-22
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Granted: 1978-04-18
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Expires: 1997-04-22
Abstract
Abstract A multicomponent polymer blend composition is prepared by intimately mixing a polyamide, a selectively hydrogenated monoalkenyl arene-diene block copolymer, and at least one dissimilar engineering thermoplastic resin under such conditions that at least two of the polymers form at least partial continuous network phases which interlock with the other polymer networks and therefore results in a desirable balance of properties.
Inventors
- 👤 William P. Gergen
- 👤 Sol Davison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C08L101/00; C08L53/025; C08L77/00
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
206 words
A composition comprising the admixture obtained by initimately mixing about 4 to about 40 parts by weight of a block copolymer, about 5 to about 48 parts by weight of at least one dissimilar engineering thermoplastic, and a polyamide in a weight ratio of polyamide to dissimilar engineering thermoplastic of greater than 1:1, so as to form a polyblend wherein at least two of the polymers have at least partial continuous interlocked networks with each other and wherein: (a) said block copolymer comprises at least two monoalkenyl arene polymer end blocks A and at least one substantially completely hydrogenated conjugated diene polymer mid block B, said block copolymer having an 8 to 55 percent by weight monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000; (b) said polyamide has a molecular weight in excess of about 10,000; and (c) said dissimilar engineering thermoplastic resin is capable of forming a continuous structure and is selected from the group consisting of polyolefins, thermoplastic polyesters, poly(aryl ethers), poly(aryl sulfones), polycarbonates, acetal resins, thermoplastic polyurethanes, halogenated thermoplastics, and nitrile barrier resins.
Claim 2
Dependent Claim
206 words
A composition comprising the admixture obtained by initimately mixing about 4 to about 40 parts by weight of a block copolymer, about 5 to about 48 parts by weight of at least one dissimilar engineering thermoplastic, and a polyamide in a weight ratio of polyamide to dissimilar engineering thermoplastic of greater than 1:1, so as to form a polyblend wherein at least two of the polymers have at least partial continuous interlocked networks with each other and wherein: (a) said block copolymer comprises at least two monoalkenyl arene polymer end blocks A and at least one substantially completely hydrogenated conjugated diene polymer mid block B, said block copolymer having an 8 to 55 percent by weight monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000; (b) said polyamide has a molecular weight in excess of about 10,000; and (c) said dissimilar engineering thermoplastic resin is capable of forming a continuous structure and is selected from the group consisting of polyolefins, thermoplastic polyesters, poly(aryl ethers), poly(aryl sulfones), polycarbonates, acetal resins, thermoplastic polyurethanes, halogenated thermoplastics, and nitrile barrier resins.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 wherein said block copolymer monoalkenyl arene is styrene and said block copolymer conjugated diene is selected from isoprene and butadiene.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein said block copolymer has an ABA linear structure.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein said block copolymer has a branched structure.
Claim 6
Dependent Claim
32 words
A composition according to claim 3 wherein said block copolymer is a selectively hydrogenated block copolymer of styrene and butadiene, said butadiene having a 1,2 content of between about 35% and 55%.
Claim 7
Dependent Claim
24 words
A composition according to claim 1 wherein said polyamide is selected from the group consisting of nylon 6, 6:6, 11, 12, 6:3 and 6:12.
Claim 8
Dependent Claim
12 words
A composition according to claim 6 wherein said polyamide is nylon 6.
Claim 9
Dependent Claim
12 words
A composition according to claim 6 wherein said polyamide is nylon 6:12.
Claim 10
Dependent Claim
15 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a thermoplastic polyester.
Claim 11
Dependent Claim
20 words
A composition according to claim 9 wherein said thermoplastic polyester is prepared by condensing a dicarboxylic acid with a glycol.
Claim 12
Dependent Claim
13 words
A composition according to claim 9 wherein said thermoplastic polyester is poly(butylene terephthalate).
Claim 13
Dependent Claim
14 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a polyolefin.
Claim 14
Dependent Claim
13 words
A composition according to claim 12 wherein said polyolefin is essentially isotactic polypropylene.
Claim 15
Dependent Claim
18 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a poly(aryl ether) or poly(aryl sulfone).
Claim 16
Dependent Claim
14 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a polycarbonate.
Claim 17
Dependent Claim
15 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is an acetal resin.
Claim 18
Dependent Claim
15 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a thermoplastic polyurethane.
Claim 19
Dependent Claim
15 words
A composition according to claim 1 wherein said dissimilar enginerring thermoplastic is a halogenated thermoplastic.
Claim 20
Dependent Claim
14 words
A composition according to claim 18 wherein said halogenated thermoplastic is crystalline polyvinylidene difluoride.
Claim 21
Dependent Claim
16 words
A composition according to claim 1 wherein said dissimilar engineering thermoplastic is a nitrile barrier resin.
Claim 22
Dependent Claim
24 words
A composition according to claim 20 wherein said nitrile barrier resin has an alpha, beta-olefinically unsaturated mononitrile content of at least 50% by weight.
Claim 23
Dependent Claim
18 words
A composition according to claim 1 which contains about 2 to about 80 percent by weight glass fibers.
Claim 24
Dependent Claim
23 words
A composition according to claim 1 wherein the block copolymer, polyolefin, and dissimilar engineering thermoplastic are melt blended under essentially isoviscous blending conditions.
Claim 25
Dependent Claim
212 words
A composition comprising the admixture obtained by intimately mixing about 4 to about 40 parts by weight of a block copolymer, about 5 to about 48 parts by weight of at least one dissimilar engineering thermoplastic, and a polyamide in a weight ratio of polyamide to dissimilar engineering thermoplastic of greater than 1:1 under essentially isoviscous melt blending conditions so as to form a polyblend wherein at least two of the polymers have at least partial continuous interlocked networks with each other and wherein: (a) said block copolymer comprises at least two monoalkenyl arene polymer end blocks A and at least one substantially completely hydrogenated conjugated diene polymer mid block B, said block copolymer having an 8 to 55 percent by weight monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000; (b) said polyamide has a molecular weight in excess of about 10,000; and (c) said dissimilar engineering thermoplastic resin is capable of forming a continuous structure and is selected from the group consisting of polyolefins, thermoplastic polyesters, poly(aryl ethers), poly(aryl sulfones), polycarbonates, acetal resins, thermoplastic polyurethanes, halogenated thermoplastics, and nitrile barrier resins.
Claim 26
Dependent Claim
212 words
A composition comprising the admixture obtained by intimately mixing about 4 to about 40 parts by weight of a block copolymer, about 5 to about 48 parts by weight of at least one dissimilar engineering thermoplastic, and a polyamide in a weight ratio of polyamide to dissimilar engineering thermoplastic of greater than 1:1 under essentially isoviscous melt blending conditions so as to form a polyblend wherein at least two of the polymers have at least partial continuous interlocked networks with each other and wherein: (a) said block copolymer comprises at least two monoalkenyl arene polymer end blocks A and at least one substantially completely hydrogenated conjugated diene polymer mid block B, said block copolymer having an 8 to 55 percent by weight monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000; (b) said polyamide has a molecular weight in excess of about 10,000; and (c) said dissimilar engineering thermoplastic resin is capable of forming a continuous structure and is selected from the group consisting of polyolefins, thermoplastic polyesters, poly(aryl ethers), poly(aryl sulfones), polycarbonates, acetal resins, thermoplastic polyurethanes, halogenated thermoplastics, and nitrile barrier resins.
Claim 27
Dependent Claim
47 words
A composition according to claim 24 wherein the viscosity ratio of the viscosity of the block copolymer divided by the viscosity of the polyamide, dissimilar engineering thermoplastic, or mixture of polyamide and dissimilar engineering thermoplastic is between about 0.2 and about 4.0 at the processing temperature Tp.
Claim 28
Dependent Claim
17 words
A composition according to claim 25 wherein said viscosity ratio is between about 0.8 and about 1.2.
Claim 29
Dependent Claim
20 words
A composition according to claim 25 wherein said processing temperature Tp is between about 150° C and about 400° C.
Claim 30
Dependent Claim
31 words
A composition according to claim 1 which contains between about 10 and about 100 parts by weight of a viscosity modifier per 100 parts by weight of said dissimilar engineering thermoplastic.
Claim 31
Dependent Claim
24 words
A composition according to claim 28 wherein the viscosity modifier is selected from the group consisting of poly(2,6-dimethyl-1,4-phenylene)oxide and blends of poly(2,6-dimethyl-1,4-phenylene)oxide with polystyrene.
Claim 32
Dependent Claim
19 words
A composition according to claim 1 which contains about 2 to about 80 percent by weight of a filler.
Claim 33
Dependent Claim
19 words
A composition according to claim 1 which contains about 2 to about 80 percent by weight of a reinforcement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |