US4066610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized pigmented polyolefin compositions
Assignee: WILSON-FIBERFIL HOLDINGS Inc A DE CORP
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Filing: 1976-07-14
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Granted: 1978-01-03
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Expires: 1996-07-14
Abstract
Abstract Polyolefins pigmented with copper phtalocyanine complexes are rendered stable against heat and oxidation by addition of a metal chelating agent.
Inventors
- 👤 Kornel Dezso Kiss
- 👤 John Leslie Hugh Allan
- 👤 Marvin Michael Fein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C08K5/22; C08K5/24; C08K5/25
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
53 words
The method of reducing the detrimental effect of a copper phthalocyanine pigment on the stability of a polyolefin resin pigmented with said copper phthalocyanine, which comprises: including in the pigmented resin from about 0.01 to about 10 percent of at least one metal chelating agent based on the weight of the polyolefin resin.
Claim 2
Independent Claim
53 words
The method of reducing the detrimental effect of a copper phthalocyanine pigment on the stability of a polyolefin resin pigmented with said copper phthalocyanine, which comprises: including in the pigmented resin from about 0.01 to about 10 percent of at least one metal chelating agent based on the weight of the polyolefin resin.
Claim 3
Dependent Claim
19 words
The method of claim 1 containing from about 0.1 to about 5 percent by weight of the chelating agent.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the polyolefin resin is selected from homopolymers and copolymers of at least one α-olefin having from 2 to 18 carbon atoms.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein the polyolefin resin is derived at least in part from propylene monomer.
Claim 6
Dependent Claim
105 words
The method of claim 1, wherein the chelating agent is a compound having the general structure Z-NH-Y-NH-Z, in which Z is an acyl group represented by the formula ##STR2## wherein R 1 and R 2 is a lower alkyl group of from 1 to 6 carbon atoms and m is an integer from 0 to 6, and Y is a group selected from a. C n H 2n , in which n is an integer from 0 to 18, or b. (C p H 2p ·NH) r ·C p H 2p , in which p and r each is an integer from 1 to 12.
Claim 7
Dependent Claim
16 words
The method of claim 5 in which R 1 and R 2 are tertiary alkyl groups.
Claim 8
Dependent Claim
23 words
The method of claim 5 in which R 1 and R 2 are in the ortho positions with respect to the hydroxyl group.
Claim 9
Dependent Claim
13 words
The method of claim 5 in which the value of m is 2.
Claim 10
Dependent Claim
15 words
The method of claim 5 in which n is an integer from 0 to 6.
Claim 11
Dependent Claim
10 words
The method of claim 5, in which n is 2.
Claim 12
Dependent Claim
15 words
The method of claim 5, in which p is an integer from 2 to 6.
Claim 13
Dependent Claim
15 words
The method of claim 5, in which r is an integer from 1 to 6.
Claim 14
Dependent Claim
10 words
The method of claim 5, in which p is 2.
Claim 15
Dependent Claim
20 words
The method of claim 5 containing the chelating agent as the sole stabilizer to prevent oxidative degradation of the polymer.
Claim 16
Dependent Claim
14 words
The method of claim 5, wherein the chelating agent is N,N'-bis[-β-(3,5-di-t-butyl-4-hydroxy phenyl) propionyl] hydrazine.
Claim 17
Dependent Claim
14 words
The method of claim 5, wherein the chelating agent is 1,2-bis[β-(3,5-di-t-butyl-4-hydroxy phenyl) propionamido] ethane.
Claim 18
Dependent Claim
13 words
The method of claim 5, wherein the chelating agent is 1,8-bis[β-(3,5-di-t-butyl-4-hydroxy phenyl) propionamido]-3,6-diazaoctane.
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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |