US4043976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized olefin polymer composition
Assignee: Ube Corp
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Filing: 1976-09-14
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Granted: 1977-08-23
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Expires: 1996-09-14
Abstract
Abstract A stabilized olefin polymer composition having resistance against deterioration caused by contact with such heavy metals as copper which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of an N,N'-dibenzoylhydrazine derivative is disclosed.
Inventors
- 👤 Toshio Yoshikawa
- 👤 Nagayoshi Sakamoto
- 👤 Masayuki Kurita
- 👤 Shunji Oh-e
- 👤 Lomitado Nagamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; C08K5/25
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
53 words
An olefin polymer composition which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of a compound having the formula ##STR4## in which R 1 and R 2 are the same or different, and each represents an alkyl group having 1 - 4 carbon atoms.
Claim 2
Dependent Claim
53 words
An olefin polymer composition which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of a compound having the formula ##STR4## in which R 1 and R 2 are the same or different, and each represents an alkyl group having 1 - 4 carbon atoms.
Claim 3
Dependent Claim
27 words
A composition so claimed in claim 1 wherein the compound has the formula defined in claim 1 in which R 1 and R 2 are the same.
Claim 4
Dependent Claim
12 words
A composition as claimed in claim 1 wherein the compound is N,N'-bis(p-methoxycarbonyl)hydrazine.
Claim 5
Dependent Claim
24 words
A composition as claimed in claim 1 wherein the olefin polymer is an ethylene homopolymer, isotactic polypropylene or an ethylene - vinyl acetate copolymer.
Claim 6
Dependent Claim
28 words
A composition as claimed in claim 1 which comprises 100 parts by weight of an olefin polymer and from 0.01 to 3 parts by weight of the compound.
Claim 7
Dependent Claim
23 words
A composition as claimed in claim 1 which further comprises at least one stabilizing agent, dispersing agent, plasticizer, antistatic agent, filler or pigment.
Claim 8
Dependent Claim
12 words
A composition as claimed in claim 1 wherein the compound is N,N'-bis(p-ethoxycarbonylbenzoyl)hydrazine.
Claim 9
Dependent Claim
12 words
A composition as claimed in claim 1 wherein the compound is N,N'-bis(p-n-propoxycarbonylbenzoyl)hydrazine.
Claim 10
Dependent Claim
12 words
A composition as claimed in claim 1 wherein the compound is N,N'-bis(p-n-butoxycarbonylbenzoyl)hydrazine.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |