US4376144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated fibers and bonded composites of cellulose fibers in vinyl chloride polymer characterized by an isocyanate bonding agent
Assignee: Flexsys America LP
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Filing: 1981-04-08
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Granted: 1983-03-08
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Expires: 2001-04-08
Abstract
Abstract Cellulose fibers are treated with vinyl chloride polymer, a plasticizer and an isocyanate bonding agent. Composites are made from cellulose fibers dispersed in a matrix of plasticized vinyl chloride polymer, and bonded thereto with an isocyanate bonding agent. The composites can be molded or extruded to produce useful articles.
Inventors
- 👤 Lloyd A. Goettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:14
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1348; Y10T428/1352; Y10T428/1372; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/249921; Y10T428/249924; Y10T428/249925; Y10T428/24994; Y10T428/249948; Y10T428/25; Y10T428/253; Y10T428/26; Y10T428/268; Y10T428/269; Y10T428/29; Y10T428/2904; Y10T428/2907
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
30 words
A composite of discontinuous cellulose fibers dispersed in a matrix comprising plasticized vinyl chloride polymer wherein the fibers are bonded to the matrix with a cyclic trimer of toluene diisocyanate.
Claim 2
Dependent Claim
30 words
A composite of discontinuous cellulose fibers dispersed in a matrix comprising plasticized vinyl chloride polymer wherein the fibers are bonded to the matrix with a cyclic trimer of toluene diisocyanate.
Claim 3
Dependent Claim
29 words
The composite of claim 1, wherein from 0.1 to 5 parts by weight of bonding agent is present, based on 100 parts of the vinyl chloride polymer by weight.
Claim 4
Dependent Claim
23 words
The composite of claim 1, wherein the cellulose fibers comprise from 1 to 40 weight percent of the total weight of the composite.
Claim 5
Dependent Claim
38 words
The composite of claim 1, wherein a plasticizer for the vinyl chloride polymer is present in an amount of from about one to 100 parts by weight, based on 100 parts of the vinyl chloride polymer by weight.
Claim 6
Dependent Claim
14 words
The composite of claim 1, wherein the bonding agent has the structural formula: ##STR8##
Claim 7
Dependent Claim
16 words
The composite of claim 1, wherein the fibers have an aspect ratio of at least 20.
Claim 8
Dependent Claim
11 words
The composite of claim 1, wherein the fibers are hardwood pulp.
Claim 9
Dependent Claim
25 words
The composite of claim 1, wherein the vinyl chloride polymer is a copolymer from a monomer mixture comprising at least fifty weight percent vinyl chloride.
Claim 10
Dependent Claim
12 words
The composite of claim 1, wherein the matrix contains a particulate filler.
Claim 11
Dependent Claim
14 words
The composite of claim 1, wherein the fibers are oriented predominantly in one direction.
Claim 12
Dependent Claim
8 words
The composite of claim 1, which contains talc.
Claim 13
Dependent Claim
26 words
A treated fiber comprising discontinuous cellulose fiber, vinyl chloride polymer, a plasticizer for said polymer, and a bonding agent comprising a cyclic trimer of toluene diisocyanate.
Claim 14
Dependent Claim
26 words
A treated fiber comprising discontinuous cellulose fiber, vinyl chloride polymer, a plasticizer for said polymer, and a bonding agent comprising a cyclic trimer of toluene diisocyanate.
Claim 15
Dependent Claim
10 words
The treated fiber of claim 12, which contains a filler.
Claim 16
Dependent Claim
17 words
The treated fiber of claim 12, wherein the cellulose fiber has an aspect ratio greater than 20.
Claim 17
Dependent Claim
15 words
The treated fiber of claim 14 wherein the aspect ratio is from 50 to 350.
Claim 18
Dependent Claim
15 words
The treated fiber of claim 15 wherein the aspect ratio is from 75 to 200.
Claim 19
Dependent Claim
32 words
The treated fiber of claim 12, wherein the bonding agent is present in an amount of from 0.1 to 10 parts by weight, based on 100 parts of the fiber by weight.
Claim 20
Dependent Claim
33 words
The treated fiber of claim 12, wherein the vinyl chloride polymer is present in an amount of from 5 to 100 parts by weight, based on 100 parts of the fiber by weight.
Claim 21
Dependent Claim
33 words
The treated fiber of claim 18, wherein the vinyl chloride polymer is present in an amount of from 2 to 50 parts by weight, based on 100 parts of the fiber by weight.
Claim 22
Dependent Claim
31 words
The treated fiber of claim 13, wherein the plasticizer is present in an amount of from 5 to 150 parts by weight, based on 100 parts of the fiber by weight.
Claim 23
Dependent Claim
9 words
A hose made from the composite of claim 1.
Claim 24
Dependent Claim
10 words
An injection molding made from the composite of claim 1.
Claim 25
Dependent Claim
9 words
Floor tile made from the composite of claim 1.
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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) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |