US4520151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris (3,6-di-t-butyl-2-naphthyl) phosphite and compositions thereof
Assignee: Goodrich Corp
•
Filing: 1982-04-02
•
Granted: 1985-05-28
•
Expires: 2002-04-02
Abstract
Abstract Tris (3,6-di-t-butyl-2-naphthyl) phosphite is a heat and hydrolysis resistant stabilizer for organic materials subject to heat and ultra-violet degradation, and in combination with hydroxy-phenylalkyleneyl isocyanurates, provides a useful synergistic combination for use in polymers, particularly hydrocarbon polymers including the poly(olefins).
Inventors
- 👤 Dwight W. Chasar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/145
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
1 words
Tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 2
Dependent Claim
1 words
Tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 3
Dependent Claim
14 words
A composition comprising organic materials subject to degradation and a stabilizing amount of tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 4
Dependent Claim
14 words
A composition comprising organic materials subject to degradation and a stabilizing amount of tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 5
Dependent Claim
13 words
A composition of claim 2 wherein the organic material is a polyolefin polymer.
Claim 6
Dependent Claim
102 words
A stabilizer for polyolefin materials subject to degradation comprising (1) a hydroxyphenylalkyleneyl isocyanurate of the formula ##STR4## wherein R' is a hydroxyphenylalkyleneyl radical of the formula ##STR5## where m is 1 to 4, r 1 is an alkyl radical having 1 to 18 carbon atoms and is positioned immediately adjacent to the hydroxy group on the ring; r 2 , r 3 , and r 4 are hydrogen or an alkyl radical containing 1 to 18 carbon atoms, and R" and R'" are hydrogen, an alkyl radical containing 1 to 18 carbon atoms, or are the same as R', and (2) tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 7
Dependent Claim
102 words
A stabilizer for polyolefin materials subject to degradation comprising (1) a hydroxyphenylalkyleneyl isocyanurate of the formula ##STR4## wherein R' is a hydroxyphenylalkyleneyl radical of the formula ##STR5## where m is 1 to 4, r 1 is an alkyl radical having 1 to 18 carbon atoms and is positioned immediately adjacent to the hydroxy group on the ring; r 2 , r 3 , and r 4 are hydrogen or an alkyl radical containing 1 to 18 carbon atoms, and R" and R'" are hydrogen, an alkyl radical containing 1 to 18 carbon atoms, or are the same as R', and (2) tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 8
Dependent Claim
51 words
A stabilizer of claim 4 wherein in (1) R" and R'" are equal to R', r 1 is a tertiary alkyl radical containing 4 to about 12 carbon atoms, r 2 is an alkyl radical containing 1 to about 12 carbon atoms, r 3 and r 4 are hydrogen, and m=1.
Claim 9
Dependent Claim
17 words
A stabilizer of claim 5 where (1) has the formula ##STR6## where n is 4 to 8.
Claim 10
Dependent Claim
9 words
The stabilizer of claim 6 where (1) is 1,3,5-tris(3,5,-di-t-butyl-4-hydroxybenzyl)isocyanurate.
Claim 11
Dependent Claim
98 words
A composition comprising a polyolefin polymer, (1) a hydroxyphenylalkyleneyl isocyanurate of the formula ##STR7## wherein R' is a hydroxyphenylalkyleneyl radical of the formula ##STR8## where m is 1 to 4, r 1 is an alkyl radical having 1 to 18 carbon atoms and is positioned immediately adjacent to the hydroxyl group on the ring; r 2 , r 3 , and r 4 are hydrogen or an alkyl radical containing to 18 carbon atoms; and R" and R'" are hydrogen, an alkyl radical containing 1 to 18 carbon atoms, or are the same as R', and (2) tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 12
Dependent Claim
98 words
A composition comprising a polyolefin polymer, (1) a hydroxyphenylalkyleneyl isocyanurate of the formula ##STR7## wherein R' is a hydroxyphenylalkyleneyl radical of the formula ##STR8## where m is 1 to 4, r 1 is an alkyl radical having 1 to 18 carbon atoms and is positioned immediately adjacent to the hydroxyl group on the ring; r 2 , r 3 , and r 4 are hydrogen or an alkyl radical containing to 18 carbon atoms; and R" and R'" are hydrogen, an alkyl radical containing 1 to 18 carbon atoms, or are the same as R', and (2) tris(3,6-di-t-butyl-2-naphthyl)phosphite.
Claim 13
Dependent Claim
59 words
A composition of claim 8 wherein said polymer is a polymonoolefin polymer, and in (1), R" and R'" are the same as R', r 1 is a tertiary alkyl radical containing 4 to about 12 carbon atoms, r 2 is an alkyl radical containing 1 to about 12 carbon atoms, r 3 and r 4 are hydrogen, and m=1.
Claim 14
Dependent Claim
10 words
A composition of claim 9 wherein said polymer is polypropylene.
Claim 15
Dependent Claim
18 words
A composition of claim 10 where in (1) has the formula ##STR9## where n is 4 to 8.
Claim 16
Dependent Claim
9 words
A composition of claim 11 where (1) is 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate.
References Cited (Backward Citations)
US2058343A
Cited
US2419354A
Cited
US2572571A
Cited
US3349058A
Cited
US3702837A
Cited
US3769367A
Cited
US4187212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |