US3887518A
Expired / Lapsed
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Salicyloyl-acyl-hydrazines
Assignee: Novartis Corp
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Filing: 1974-01-09
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Granted: 1975-06-03
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Expires: 1994-01-09
Abstract
Abstract New salicyloyl-acyl-hydrazines are stabilizers for polyolefines. They are prepared by reacting a salicycloylhydrazine with a monocarboxylic acid chloride or a monocarboxylic acid hydrazine with a salicycloylic acid chloride.
Inventors
- 👤 Siegfried Rosenberger
- 👤 Kurt Schwarzenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; C07; C07C; C07C243/00; C07C243/24; C07C243/38; C08K5/25
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
16 words
A stabilized polyolefin containing a polyolefin and 0.01 to 5% of a stabilizer of the formula
Claim 2
Dependent Claim
16 words
A stabilized polyolefin containing a polyolefin and 0.01 to 5% of a stabilizer of the formula
Claim 3
Dependent Claim
16 words
A STABILIZED POLYOLEFIN CONTAINING A POLYOLEFIN AND 0.01 TO 5% OF A STABILIZER OF THE FORMULA
Claim 4
Dependent Claim
16 words
A STABILIZED POLYOLEFIN CONTAINING A POLYOLEFIN AND 0.01 TO 5% OF A STABILIZER OF THE FORMULA
Claim 5
Dependent Claim
16 words
A stabilized polyolefin according to claim 1, wherein 0.05 to 1.5% of said stabilizer is prEsent.
Claim 6
Dependent Claim
16 words
A stabilized polyolefin according to claim 2, wherein 0.1 to 0.8% of said stabilizer is present.
Claim 7
Dependent Claim
12 words
A stabilized polyolefin according to claim 1, wherein said polyolefin is polypropylene.
Claim 8
Dependent Claim
51 words
A stabilized polyolefin according to claim 1, wherein in said formula of the stabilizer R2 and R5, if m is 1, independently of one another denote hydrogen, alkyl with 1 to 5 carbon atoms, alkenyl with 3 or 4 carbon atoms, cyclohexyl, aralkyl with 7 to 9 carbon atoms or chlorine.
Claim 9
Dependent Claim
55 words
A stabilized polyolefin according to claim 1, wherein in said formula of the stabilizer R1 denotes hydrogen, hydroxyl, chlorine, alkyl with 1 to 8 carbon atoms, alkoxy with 1 to 18 carbon atoms or acetoxy, R2 denotes hydrogen, butyl or chlorine and R3 denotes alkyl with 3 to 17 carbon atoms, cyclohexyl or the radical.
Claim 10
Dependent Claim
61 words
A stabilized polyolefin according to claim 1, wherein in said formula of the stabilizer R1 denotes hydrogen, alkyl with 1 to 8 carbon atoms, chlorine or alkoxy with 1 to 8 carbon atoms, R2 denotes hydrogen, alkyl with 1 to 5 carbon atoms or chlorine, and R3 denotes alkyl with 3 to 17 carbon atoms, cyclohexyl or one of the radicals
Claim 11
Dependent Claim
58 words
A stabilized polyolefin according to claim 1, wherein in said formula of the stabilizer R1 denotes hydrogen, alkyl with 1 to 5 carbon atoms or alkoxy with 1 to 18 carbon atoms, R2 denotes hydrogen or alkyl with 1 to 5 carbon atoms and R3 denotes alkyl with 3 to 17 carbon atoms or one of the radicals
Claim 12
Dependent Claim
14 words
A stabilized polyolefin according to claim 1, wherein said stabilizer is of the formula
Claim 13
Dependent Claim
14 words
A stabilized polyolefin according to claim 1, wherein said stabilizer is of the formula
Claim 14
Dependent Claim
14 words
A stabilized polyolefin according to claim 1, wherein said stabilizer is of the formula
Claim 15
Dependent Claim
14 words
A stabilized polyolefin according to claim 1, wherein said stabilizer is of the formula
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |