US4614784A
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Homogeneous molecular composites, process for their production and articles made therefrom
Assignee: Wyeth Holdings LLC
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Filing: 1984-04-06
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Granted: 1986-09-30
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Expires: 2004-04-06
Abstract
Abstract Molecular composites, liquid crystalline and isotropic, comprising (i) an in situ polymerized flexible coil-like polymer and (ii) a reinforcing amount of a rigid rod-like liquid crystalline polymer. Articles made from such molecular composites have mechanical properties enhanced in three dimensions.
Inventors
- 👤 Joseph J. Kozakiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:59
CPC Classifications
C; C08; C08F; C08F251/00; C08L; C08L101/00
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
31 words
A polymeric liquid crystalline or isotropic alloy comprising a mixture of (i) an in situ polymerized flexible coil-like polymer, and (ii) a reinforcing amount of a rigid rod-like liquid crystalline polymer.
Claim 2
Dependent Claim
31 words
A polymeric liquid crystalline or isotropic alloy comprising a mixture of (i) an in situ polymerized flexible coil-like polymer, and (ii) a reinforcing amount of a rigid rod-like liquid crystalline polymer.
Claim 3
Dependent Claim
17 words
A polymeric alloy as defined in claim 1 in which the modulus and tensile properties are isotropic.
Claim 4
Dependent Claim
12 words
A polymeric alloy as defined in claim 1 which is liquid crystalline.
Claim 5
Dependent Claim
11 words
A polymeric alloy as defined in claim 1 which is isotropic.
Claim 6
Dependent Claim
40 words
A polymeric alloy as defined in claim 1 wherein the flexible coil-like polymer is polymerized in situ from a mixture comprising the rigid rod-like liquid crystalline polymer (ii) dissolved in a solvent comprising monomeric precursor of said coil-like polymer (i).
Claim 7
Dependent Claim
19 words
A polymeric alloy as defined in claim 5 wherein said monomeric precursor is polymerizable by a free-radical addition reaction.
Claim 8
Dependent Claim
16 words
A polymeric alloy as defined in claim 5 wherein said monomeric precursor includes polymerizable vinyl groups.
Claim 9
Dependent Claim
38 words
A polymeric alloy as defined in claim 1 wherein said rod-like polymer (ii) is present in an amount of from about 1 to about 70 parts by weight per 100 parts by weight of (i) and (ii) combined.
Claim 10
Dependent Claim
38 words
A polymeric alloy as defined in claim 8 wherein said rod-like polymer (ii) is present in an amount of from about 10 to about 50 parts by weight per 100 parts by weight of (i) and (ii) combined.
Claim 11
Dependent Claim
31 words
A polymeric alloy as defined in claim 1 wherein coil-like polymer (i) is selected from in situ polymerized N-vinyl-2-pyrrolidinone, acrylic acid, 2-hydroxyethyl acrylate, or a mixture of any of the foregoing.
Claim 12
Dependent Claim
17 words
A polymeric alloy as defined in claim 10 wherein coil-like polymer (i) comprises in situ polymerized N-vinyl-2-pyrrolidinone.
Claim 13
Dependent Claim
31 words
A polymeric alloy as defined in claim 1 wherein said rigid rod-like liquid crystalline polymer (ii) is selected from cellulose diacetate, cellulose triacetate, or a mixture of either of the foregoing.
Claim 14
Dependent Claim
18 words
A polymeric alloy as defined in claim 12 wherein rigid rod-like liquid crystalline polymer (ii) comprises cellulose diacetate.
Claim 15
Dependent Claim
28 words
A polymeric alloy as defined in claim 1 wherein coil-like polymer (i) comprises in situ polymerized N-vinyl-2-pyrrolidinone and said rigid rod-like liquid crystalline polymer (ii) comprises cellulose diacetate.
Claim 16
Dependent Claim
17 words
A polymeric alloy as defined in claim 1 in which the modulus and tensile properties are anisotropic.
Claim 17
Dependent Claim
23 words
A polymeric alloy as defined in claim 1 which is liquid crystalline and wherein said rigid rod-like liquid crystalline polymer is uniaxially oriented.
Claim 18
Dependent Claim
37 words
An article of manufacture formed from a polymeric liquid crystalline or isotropic alloy comprising a mixture of (i) an in situ polymerized flexible coil-like polymer, and (ii) a reinforcing amount of a rigid rod-like liquid crystalline polymer.
Claim 19
Dependent Claim
37 words
An article of manufacture formed from a polymeric liquid crystalline or isotropic alloy comprising a mixture of (i) an in situ polymerized flexible coil-like polymer, and (ii) a reinforcing amount of a rigid rod-like liquid crystalline polymer.
Claim 20
Dependent Claim
22 words
An article of manufacture as defined in claim 17 which is three-dimensional and in which the modulus and tensile properties are isotropic.
Claim 21
Dependent Claim
18 words
An article of manufacture as defined in claim 17 which is a three-dimensional molded article, film or filament.
Claim 22
Independent Claim
85 words
A method of preparing a molecular composite comprising the steps of: (a) forming a liquid crystalline or isotropic solution of a reinforcing amount of a rigid rod-like liquid crystalline polymer (ii) in a solvent comprising a monomeric precursor of a flexible, coil-like polymer (i), (b) polymerizing said monomeric precursor in situ to form a flexible, coil-like polymer continuous phase reinforced with said liquid crystalline rod-like polymer as said molecular composite, having a morphology corresponding to that of said solution, and (c) recovering said molecular composite.
Claim 23
Independent Claim
85 words
A method of preparing a molecular composite comprising the steps of: (a) forming a liquid crystalline or isotropic solution of a reinforcing amount of a rigid rod-like liquid crystalline polymer (ii) in a solvent comprising a monomeric precursor of a flexible, coil-like polymer (i), (b) polymerizing said monomeric precursor in situ to form a flexible, coil-like polymer continuous phase reinforced with said liquid crystalline rod-like polymer as said molecular composite, having a morphology corresponding to that of said solution, and (c) recovering said molecular composite.
Claim 24
Dependent Claim
29 words
A method as defined in claim 20 including the step of introducing the solution of step (a) into a casting mold in which polymerizing step (b) is carried out.
Claim 25
Dependent Claim
14 words
A method as defined in claim 20 wherein said molecular composite is liquid crystalline.
Claim 26
Dependent Claim
13 words
A method as defined in claim 20 wherein said molecular composite is isotropic.
Claim 27
Dependent Claim
18 words
A method as defined in claim 20 wherein said monomeric precursor is polymerizable by a free-radical addition mechanism.
Claim 28
Dependent Claim
15 words
A method as defined in claim 20 wherein the monomeric precursor includes polymerizable vinyl groups.
Claim 29
Dependent Claim
52 words
A method as defined in claim 20 wherein the amount of rigid rod-like liquid crystalline polymer (ii) employed in step (a) is sufficient to provide from about 1 to about 70 parts by weight per 100 parts by weight combined of coil-like polymer (i) and rod-like polymer (ii) in said molecular composite.
Claim 30
Dependent Claim
51 words
A method as defined in claim 26 wherein the amount of rigid rod-like liquid crystalline polymer (ii) employed in step (a) is sufficient to provide from about 10 to about 50 parts by weight per 100 parts by weight of combined coil-like polymer (i) and rod-like polymer (ii) in said composite.
Claim 31
Dependent Claim
31 words
A method as defined in claim 20 wherein the precursor for said coil-like polymer (i) is selected from N-vinyl-2-pyrrolidinone, acrylic acid, 2-hydroxyethyl acrylate or a mixture of any of the foregoing.
Claim 32
Dependent Claim
12 words
A method as defined in claim 28 wherein the precursor comprises N-vinyl-2-pyrrolidinone.
Claim 33
Dependent Claim
30 words
A method as defined in claim 20 wherein said rigid rod-like liquid crystalline polymer (ii) is selected from cellulose diacetate, cellulose triacetate, or a mixture of either of the foregoing.
Claim 34
Dependent Claim
18 words
A method as defined in claim 30 wherein said rigid rod-like liquid crystalline polymer (ii) comprises cellulose diacetate.
Claim 35
Dependent Claim
25 words
A method as defined in claim 20 wherein said coil-like polymer (i) comprises poly(N-vinyl-2-pyrrolidinone) and said rigid rod-like liquid crystalline polymer (ii) comprises cellulose diacetate.
Claim 36
Dependent Claim
25 words
A method as defined in claim 20 wherein the molecular composite is recovered in the form of a molded article, a film or a filament.
Claim 37
Dependent Claim
26 words
A method as defined in claim 20 including the step of forming the recovered molecular composite into a three-dimensional molded article, a film or a filament.
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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |