US4039631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation cross-linkable compositions of copolymers of ethylene and a halogenated monomer
Assignee: Solvay Solexis Inc
•
Filing: 1975-08-05
•
Granted: 1977-08-02
•
Expires: 1995-08-05
Abstract
Abstract Radiation cross-linkable compositions comprising a copolymer of ethylene and a halogenated monomer selected from the group consisting of chlorotrifluoroethylene, tetrafluoroethylene and mixtures thereof and an effective amount of a radiation cross-linking agent selected from the group consisting of diallyl isophthalate, diallyl terephthalate and mixtures thereof.
Inventors
- 👤 Arthur B. Robertson
- 👤 Robert J. Schaffhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:57
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; C08F; C08F255/00; C08F255/02; C08F259/00; C08F259/08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
A radiation cross-linkable composition comprising an admixture of a copolymer of ethylene and a halogenated monomer selected from the group consisting of chlorotrifluoroethylene, tetrafluoroethylene and mixtures thereof and an effective amount of a radiation cross-linking agent selected from the group consisting of diallyl isophthalate, diallyl terephthalate, and mixtures thereof.
Claim 2
Dependent Claim
49 words
A radiation cross-linkable composition comprising an admixture of a copolymer of ethylene and a halogenated monomer selected from the group consisting of chlorotrifluoroethylene, tetrafluoroethylene and mixtures thereof and an effective amount of a radiation cross-linking agent selected from the group consisting of diallyl isophthalate, diallyl terephthalate, and mixtures thereof.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said cross-linking agent is present in an amount of about 0.1 to 5% based upon the weight of said copolymer.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein said copolymer is ethylene-chlorotrifluoroethylene.
Claim 5
Dependent Claim
16 words
The composition of claim 3 wherein said copolymer is an approximately an equimolar copolymer of ethylene-chlorotrifluoroethylene.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein said cross-linking agent is diallyl isophthalate.
Claim 7
Dependent Claim
19 words
The composition of claim 5 wherein said cross-linking agent is present in an amount of about 0.75 to 2.5%.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein said cross-linking agent is diallyl terephthalate.
Claim 9
Dependent Claim
10 words
A composition of claim 2 wherein said copolymer is ethylene-tetrafluoroethylene.
Claim 10
Dependent Claim
22 words
The composition of claim 1 additionally including from about 0.1 to 5% based upon the weight of the copolymer of an anti-oxidant.
Claim 11
Dependent Claim
91 words
The composition of claim 9 wherein said anti-oxidant is selected from the group consisting of (1) mixtures of a phosphite of an organic polyhydric phenol and a salt of a carboxylic acid and a metal of Group II of the Periodic Table, (2) alkylated phenols and bisphenols having 1 to 18 carbon atoms in the alkyl chain, (3) alkylidene bis, tris and polyphenols having 1 to 8 carbon atoms in the alkylidene chain, and (4) mixtures of (1), (2), or (3) with an ester or alkali metal salt of thiodipropionic acid.
Claim 12
Dependent Claim
18 words
The composition of claim 1 additionally including from about 0.1 to 30% by weight of an acid scavenger.
Claim 13
Dependent Claim
22 words
The composition of claim 11 wherein said acid scavenger is an oxide of a metal of Group II of the Periodic Table.
Claim 14
Dependent Claim
12 words
The composition of claim 12 wherein said acid scavenger is calcium oxide.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |