US4248743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing a composite of wood pulp dispersed in a polymeric matrix
Assignee: Flexsys America LP
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Filing: 1979-08-17
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Granted: 1981-02-03
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Expires: 1999-08-17
Abstract
Abstract A composite of polymeric matrix and wood pulp is prepared by masticating such proportion of polymeric matrix as provides a continuous phase and wood pulp having a tensile strength below about 10 kg/cm 2 . Water is added if needed to provide the requisite low tensile strength.
Inventors
- 👤 Lloyd A. Goettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:23
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08L1/00; C08L1/02; C08L21/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L7/00; C08L9/00; C08L9/06; C08L97/00; C08L97/02; C08K; C08K3/00; C08K3/02; C08K3/04; C08L2205/00; C08L2205/14; C08L2205/16; C08L23/08; C08L23/0846; C08L23/0853
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
The method of making a composite of polymeric matrix and wood pulp which comprises masticating such proportion of polymeric matrix including massed polymer as provides a continuous phase, agglomerated wood pulp having a tensile strength below about 10 kg./cm. 2 regardless of the direction of measurement and such amount of water as to provide the aforesaid tensile strength, wherein the polymeric matrix is present in an amount of at least 50 parts by weight based on 100 parts by weight of dry wood pulp.
Claim 2
Independent Claim
84 words
The method of making a composite of polymeric matrix and wood pulp which comprises masticating such proportion of polymeric matrix including massed polymer as provides a continuous phase, agglomerated wood pulp having a tensile strength below about 10 kg./cm. 2 regardless of the direction of measurement and such amount of water as to provide the aforesaid tensile strength, wherein the polymeric matrix is present in an amount of at least 50 parts by weight based on 100 parts by weight of dry wood pulp.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein the matrix is elastomeric.
Claim 4
Dependent Claim
14 words
The method of claim 2 wherein the matrix comprises vulcanizable elastomer and carbon black.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the wood pulp has a tensile strength below about three kg/cm 2 .
Claim 6
Independent Claim
56 words
The method of making a composite of elastomeric matrix reinforced with wood pulp which comprises masticating a major proportion of elastomeric matrix, including massed elastomer and a minor proportion, on a dry basis, of agglomerated wood pulp together with water in amount within the range of 35-65% of the sum of the wood pulp plus water.
Claim 7
Independent Claim
56 words
The method of making a composite of elastomeric matrix reinforced with wood pulp which comprises masticating a major proportion of elastomeric matrix, including massed elastomer and a minor proportion, on a dry basis, of agglomerated wood pulp together with water in amount within the range of 35-65% of the sum of the wood pulp plus water.
Claim 8
Dependent Claim
16 words
The process of claim 5 wherein the amount of water is within the range of 35-50%.
Claim 9
Dependent Claim
13 words
The process of claim 6 wherein the elastomeric matrix includes a particulate filler.
Claim 10
Dependent Claim
26 words
The process of claim 7 which includes drying the mixture of wet fiber and matrix followed by adding bonding ingredients and curatives and curing the composition.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein the matrix is poly(vinylchloride).
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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |