US3971753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer composites and preparation thereof
Assignee: OSI Specialties Inc
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Filing: 1973-12-13
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Granted: 1976-07-27
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Expires: 1993-12-13
Abstract
Abstract Polymer composites having enhanced mechanical or chemical properties have been prepared by first coating the filler component of the composite with a free-radical polymerization initiator which adheres to the surface of the filler and then polymerizing an ethylenically unsaturated monomer onto the filler.
Inventors
- 👤 Arthur C. Frechtling
- 👤 Norman W. Johnston
- 👤 Richard G. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08F; C08F292/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/2998
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
50 words
A composite comprising a filler substrate, an organic free radical polymerization initiator, which has been decomposed into free radicals, containing carboxyl or carboxamide groups, said initiator bonded through said groups to said substrate and ethylenically unsaturated monomer which has been polymerized to a resin matrix by said initiator free radicals.
Claim 2
Dependent Claim
50 words
A composite comprising a filler substrate, an organic free radical polymerization initiator, which has been decomposed into free radicals, containing carboxyl or carboxamide groups, said initiator bonded through said groups to said substrate and ethylenically unsaturated monomer which has been polymerized to a resin matrix by said initiator free radicals.
Claim 3
Dependent Claim
11 words
Composite claimed in claim 1 wherein the resin matrix is polyacrylonitrile.
Claim 4
Dependent Claim
11 words
Composite claimed in claim 1 wherein the resin matrix is polystyrene.
Claim 5
Dependent Claim
12 words
Composite claimed in claim 1 wherein the resin matrix is polymethyl methacrylate.
Claim 6
Dependent Claim
12 words
Composite claimed in claim 1 wherein the resin matrix is polyethyl acrylate.
Claim 7
Dependent Claim
12 words
Composite claimed in claim 1 wherein the resin matrix is polyvinyl chloride.
Claim 8
Dependent Claim
13 words
Composite claimed in claim 1 wherein the resin matrix is a styrene-acrylonitrile copolymer.
Claim 9
Dependent Claim
13 words
Composite claimed in claim 1 wherein the filler substrate is in fiber form.
Claim 10
Dependent Claim
13 words
Composite claimed in claim 1 wherein the filler substrate is in sheet form.
Claim 11
Dependent Claim
13 words
Composite claimed in claim 1 wherein the filler substrate is in particulate form.
Claim 12
Dependent Claim
11 words
Composite claimed in claim 1 wherein the filler substrate is glass.
Claim 13
Dependent Claim
11 words
Composite claimed in claim 1 wherein the filler substrate is asbestos.
Claim 14
Dependent Claim
108 words
Method of fabricating a composite which comprises the steps of: a. coating the surface of a filler substrate with a free radical organic polymerization initiator containing carboxyl or caboxamide groups having an affinity for and which adhere to the surface of said substrate; b. contacting the initiator coated substrate with an amount of an ethylenically unsaturated monomer sufficient to at least cover the total surface area of said initiator coated substrate; and c. maintaining the temperature of the initiator coated substrate ethylenically unsaturated monomer combination at a point where the initiator decomposes to form free radicals until a layer of the ethylenically unsaturated monomer polymerizes on the substrate.
Claim 15
Dependent Claim
108 words
Method of fabricating a composite which comprises the steps of: a. coating the surface of a filler substrate with a free radical organic polymerization initiator containing carboxyl or caboxamide groups having an affinity for and which adhere to the surface of said substrate; b. contacting the initiator coated substrate with an amount of an ethylenically unsaturated monomer sufficient to at least cover the total surface area of said initiator coated substrate; and c. maintaining the temperature of the initiator coated substrate ethylenically unsaturated monomer combination at a point where the initiator decomposes to form free radicals until a layer of the ethylenically unsaturated monomer polymerizes on the substrate.
Claim 16
Dependent Claim
10 words
Method claimed in claim 13 wherein the substrate is glass.
Claim 17
Dependent Claim
10 words
Method claimed in claim 13 wherein the substrate is asbestos.
Claim 18
Dependent Claim
23 words
Method claimed in claim 13 wherein the ethylenically unsaturated monomer polymerized on the substrate at a temperature of about 10° to about 140°C.
Claim 19
Dependent Claim
12 words
Method claimed in claim 13 wherein the ethylenically unsaturated monomer is acrylonitrile.
Claim 20
Dependent Claim
14 words
Method claimed in claim 13 wherein the ethylenically unsaturated monomer is polymerized in bulk.
Claim 21
Dependent Claim
16 words
Method claimed in claim 13 wherein the ethylenically unsaturated monomer is polymerized in a non-aqueous diluent.
Claim 22
Dependent Claim
14 words
Method claimed in claim 13 wherein the polymerization initiator is t-butyl peroxy maleic acid.
Claim 23
Dependent Claim
12 words
Method claimed in claim 13 wherein the polymerization initiator is t-butyl azoformamide.
Claim 24
Dependent Claim
12 words
Method claimed in claim 13 wherein the polymerization initiator is 4-t-butylazo-4-cyanovaleric acid.
Claim 25
Dependent Claim
13 words
Method claimed in claim 13 wherein the polymerization initiator is succinic acid peroxide.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |