Patent US4190570A successfully refreshed from Google Patents.
US4190570A
Expired / Lapsed
US
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Cable filler
Assignee: Witco Corp
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Filing: 1978-08-04
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Granted: 1980-02-26
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Expires: 1998-08-04
Abstract
Abstract A waterproof filling and flooding composition for communication cables which comprises 90% or more by weight of petrolatum, about 5-7% polybutene-1, 0.5-2.0% polyethylene and the remainder an amorphous saturated rubber such as ethylenepropylene rubber (EPR), exhibits flow resistance at temperatures of 160°-170° F. and even higher.
Inventors
- 👤 John J. Kaufman
- 👤 Thomas E. Luisi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:46
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; C; C08; C08L; C08L91/00; C08L91/06; C08L91/08; C10; C10M; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/18; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/086; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
A cable filling and flooding composition comprising at least about 90% by weight of petrolatum; about 5-7% by weight polybutene-1; about 0.5-2.0% by weight of polyethylene; and about 0.5-2.0% by weight of an amorphous rubber.
Claim 2
Dependent Claim
35 words
A cable filling and flooding composition comprising at least about 90% by weight of petrolatum; about 5-7% by weight polybutene-1; about 0.5-2.0% by weight of polyethylene; and about 0.5-2.0% by weight of an amorphous rubber.
Claim 3
Dependent Claim
12 words
The composition of claim 1, wherein the rubber is a butyl rubber.
Claim 4
Dependent Claim
16 words
The composition of claim 1, having an R.E.A. flow rate of approximately zero at 160° F.
Claim 5
Dependent Claim
16 words
The composition of claim 1, further comprising 0.15 to about 0.25% by weight of an antioxidant.
Claim 6
Dependent Claim
10 words
The composition of claim 1, comprising a mixture of antioxidants.
Claim 7
Dependent Claim
14 words
The composition of claim 1, wherein the polyethylene is at least about 90% crystalline.
Claim 8
Dependent Claim
15 words
The composition of claim 1, wherein the polybutene-1 has a melt index of from 10-25.
Claim 9
Dependent Claim
31 words
The composition of claim 1, comprising about 92% by weight of petrolatum; 6% by weight of polybutene-1; 1% by weight of polyethylene; 1% by weight of amorphous rubber; and an antioxidant.
Claim 10
Dependent Claim
16 words
The composition of claim 8, having an R.E.A. flow rate of approximately zero at 160° F.
Claim 11
Dependent Claim
12 words
A communication cable filled and flooded with the composition of claim 9.
Claim 12
Dependent Claim
11 words
The composition of claim 1, wherein the rubber is a polyisbutylene.
Claim 13
Dependent Claim
11 words
The composition of claim 1, wherein the rubber is a copolymer.
Claim 14
Dependent Claim
13 words
The composition of claim 12, wherein the copolymers is a polystyrene-polyisoprene-polytyrene block polymer.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |