Patent US3900442A successfully refreshed from Google Patents.
US3900442A
Expired / Lapsed
US
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Titanium dioxide pigmented polymer compositions with improved visible and ultraviolet light stability
Assignee: Eastman Kodak Co
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Filing: 1974-04-30
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Granted: 1975-08-19
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Expires: 1994-04-30
Abstract
Abstract The zinc or manganese salt of 3,5-di-tert-alkyl-4-hydroxybenzoic acid, in combination with either a 2-hydroxybenzophenone or a 2(2H-benzotriazol-2-yl)phenol ultraviolet absorber, provides a highly effective synergistic stabilizer system for TiO2-pigmented polymers.
Inventors
- 👤 Joseph S Zannucci
- 👤 Gerald R Lappin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/04; C08K5/13; C08K5/138
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
73 words
COMPOSITION COOMPRISING A TITANIUM DIOXIDE PIGMENTED POLYMER NORMALLY SUSCEPTIBLE TO DEGRADATION DUE TO VISIBLE OR ULTRAVIOLET LIGHT SELECTED FROM THE GROUP CONSISTING OF POLY-AOLEFINS PREPARED FROM AT LEAST ONE A-MONOOLEFIN HAVING 2 TO 12 CARBON ATOMS AND GRAFT COPOLYMERS PREPARED BY POLYMERIZING AN A-MONOOLEFIN CONTAINING 2 TO 5 CARBON ATOMS AND SUBSEQUENTLY GRAFTING MALEIC OR ACRYLIC ACID TO THE POLYMER BACKBONE, MIXED WITH A STABILIZING AMOUNT OF THE FOLLOWING COMPONENTS (1) AND (2):
Claim 4
Dependent Claim
73 words
COMPOSITION COOMPRISING A TITANIUM DIOXIDE PIGMENTED POLYMER NORMALLY SUSCEPTIBLE TO DEGRADATION DUE TO VISIBLE OR ULTRAVIOLET LIGHT SELECTED FROM THE GROUP CONSISTING OF POLY-AOLEFINS PREPARED FROM AT LEAST ONE A-MONOOLEFIN HAVING 2 TO 12 CARBON ATOMS AND GRAFT COPOLYMERS PREPARED BY POLYMERIZING AN A-MONOOLEFIN CONTAINING 2 TO 5 CARBON ATOMS AND SUBSEQUENTLY GRAFTING MALEIC OR ACRYLIC ACID TO THE POLYMER BACKBONE, MIXED WITH A STABILIZING AMOUNT OF THE FOLLOWING COMPONENTS (1) AND (2):
Claim 5
Dependent Claim
9 words
a compound selected from (a) compounds having the formula:
Claim 6
Dependent Claim
9 words
a compound selected from (a) compounds having the formula:
Claim 7
Dependent Claim
9 words
A COMMPOUND SELECTED FROM (A) COMPOUNDS HAVING THE FORMULA:
Claim 8
Dependent Claim
9 words
A COMMPOUND SELECTED FROM (A) COMPOUNDS HAVING THE FORMULA:
Claim 9
Dependent Claim
12 words
Composition according to claim 1 wherein the titanium dioxide-pigmented polymer is polypropylene.
Claim 10
Dependent Claim
36 words
Composition according to claim 2 wherein R1, R2 and R3 are methyl or ethyl; R4 is an alkyl group having eight to twelve carbon atoms; R6 is hydrogen or lower alkyl; and X is Zn 2.
Claim 11
Dependent Claim
13 words
Composition of claim 1 wherein the polymer is a polypropylene graft acrylic acid.
Claim 12
Dependent Claim
13 words
Composition of claim 1 wherein the stabilizing components are zinc 3,5-di-tert-butyl-4-hydroxybenzoate and 4-dodecyloxy-2-hydroxybenzophenone.
Claim 13
Dependent Claim
13 words
Composition of claim 2 wherein the stabilizing components are zinc 3,5-di-tert-butyl-4-hydroxybenzoate and 4-dodecyloxy-2-hydroxybenzophenone.
Claim 14
Dependent Claim
13 words
Composition of claim 1 wherein the stabilizing components are zinc 3,5-di-tert-butyl-4-hydroxybenzoate and 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol.
Claim 15
Dependent Claim
13 words
Composition of claim 2 wherein the stabilizing components are zinc 3,5-di-tert-butyl-4-hydroxybenzoate and 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol.
Claim 16
Dependent Claim
13 words
Composition of claim 4 wherein the stabilizing components are zinc 3,5-di-tert-butyl-4-hydroxybenzoate and 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol.
References Cited (Backward Citations)
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US3368997A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |