US4348266A
Expired / Lapsed
US
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Irradiated blends of polyethylene and neoprene rubber
Assignee: Advanced Elastomer Systems LP
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Filing: 1981-04-02
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Granted: 1982-09-07
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Expires: 2001-04-02
Abstract
Abstract Blends are described comprising polyethylene and neoprene rubber irradiated with ionizing radiation.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; C08J2311/00; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
41 words
A composition comprising a blend of about 10-75 parts by weight of crystalline polyethylene, and, correspondingly, about 90-25 parts by weight of neoprene rubber wherein the composition is irradiated with an ionizing radiation dose of about 1 to 15 M Rads.
Claim 2
Dependent Claim
41 words
A composition comprising a blend of about 10-75 parts by weight of crystalline polyethylene, and, correspondingly, about 90-25 parts by weight of neoprene rubber wherein the composition is irradiated with an ionizing radiation dose of about 1 to 15 M Rads.
Claim 3
Dependent Claim
37 words
The composition of claim 1 which comprises about 20-60 parts by weight of crystalline polyethylene, and, correspondingly, about 80-40 parts by weight of neoprene rubber wherein the radiation dose is about 3 to about 12 M Rads.
Claim 4
Dependent Claim
40 words
The composition of claim 2 which is prepared by directing a high energy electron beam toward the composition in the form of a sheet having a thickness of about 0.1-2 centimeters for the time necessary to receive the desired dosage.
Claim 5
Dependent Claim
10 words
The composition of claim 3 containing a radiation cross-linking promotor.
Claim 6
Dependent Claim
16 words
The composition of claim 4 in which the thickness of the sheet is about 1-5 millimeters.
Claim 7
Dependent Claim
26 words
The composition of claim 5 in which the neoprene rubber is in the form of discrete dispersed particles and the composition is processable as a thermoplastic.
Claim 8
Dependent Claim
29 words
The composition of claim 6 which comprises about 20-45 parts by weight of crystalline polyethylene, and, correspondingly, about 80-55 parts by weight of neoprene rubber and which is elastomeric.
Claim 9
Dependent Claim
23 words
The composition of claim 7 in which the neoprene rubber particles are of a size of about 50 microns number average or less.
Claim 10
Dependent Claim
20 words
The composition of claim 8 in which the neoprene rubber particle size is about 0.1 to 10 microns number average.
Claim 11
Dependent Claim
72 words
An elastoplastic composition comprising a blend of crystalline polyethylene, in an amount sufficient to impart thermoplasticity to the composition, and neoprene rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition and which rubber is present in an amount sufficient to impart rubberlike elasticity to the composition wherein the composition is irradiated with an ionizing radiation dose of about 1 to 15 M Rads.
Claim 12
Dependent Claim
72 words
An elastoplastic composition comprising a blend of crystalline polyethylene, in an amount sufficient to impart thermoplasticity to the composition, and neoprene rubber in the form of dispersed particles of a size small enough to maintain thermoplasticity of the composition and which rubber is present in an amount sufficient to impart rubberlike elasticity to the composition wherein the composition is irradiated with an ionizing radiation dose of about 1 to 15 M Rads.
Claim 13
Dependent Claim
42 words
The composition of claim 10 comprising about 20 to about 45 parts by weight of crystalline polyethylene, and, correspondingly, about 80 to about 55 parts by weight of neoprene rubber wherein the radiation dose is about 3 to about 12 M Rads.
Claim 14
Dependent Claim
40 words
The composition of claim 11 which is prepared by directing a high energy electron beam toward the composition in the form of a sheet having a thickness of about 0.1-2 centimeters for the time necessary to receive the desired dosage.
Claim 15
Dependent Claim
33 words
The composition of claim 12 in which the thickness of the sheet is about 1-5 millimeters and the neoprene rubber particles are of a size of about 50 microns number average or less.
Claim 16
Dependent Claim
10 words
The composition of claim 13 containing a radiation cross-linking promotor.
References Cited (Backward Citations)
US4104210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |