Patent US4419472A successfully refreshed from Google Patents.
US4419472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidine compositions for light stabilization
Assignee: BASF Corp
•
Filing: 1981-11-16
•
Granted: 1983-12-06
•
Expires: 2001-11-16
Abstract
Abstract The invention relates to ester mixtures of polyalkylpiperidine derivatives of the formulae I and II ##STR1## in which R 1 is hydrogen or methyl, R 2 is hydrogen, C 1-12 alkyl, C 3-8 alkenyl, C 7-11 aralkyl, cyanomethyl or C 2-4 acyl, R 3 is C 1-18 alkylene, C 2-18 oxaalkylene, Chd 2-18 thiaalkylene, C 2-18 azaalkylene or C 2-8 alkenylene and R 4 is C 1-4 alkyl. These mixtures are suitable as stabilizers for plastics.
Inventors
- 👤 Godwin Berner
- 👤 Manfred Rembold
- 👤 Jean Rody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C09; C09D; C09D7/00; C09D7/40; C09D7/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A composition, which is a mixture of esters of the formulae I and II, which comprises (a) 90-70% by weight of an ester of formula I ##STR4## (b) 10-30% by weight of an ester of formula II ##STR5## in which R 1 is hydrogen or methyl, R 2 is hydrogen, C 1-12 alkyl, C 3-8 alkenyl, C 7-11 aralkyl, cyanomethyl or C 2-4 acyl, R 3 is C 1-18 alkylene, C 2 -C 18 oxaalkylene, C 2-18 thiaalkylene, C 2-18 azaalkylene or C 2-8 alkenylene and R 4 is C 1-4 alkyl.
Claim 2
Dependent Claim
92 words
A composition, which is a mixture of esters of the formulae I and II, which comprises (a) 90-70% by weight of an ester of formula I ##STR4## (b) 10-30% by weight of an ester of formula II ##STR5## in which R 1 is hydrogen or methyl, R 2 is hydrogen, C 1-12 alkyl, C 3-8 alkenyl, C 7-11 aralkyl, cyanomethyl or C 2-4 acyl, R 3 is C 1-18 alkylene, C 2 -C 18 oxaalkylene, C 2-18 thiaalkylene, C 2-18 azaalkylene or C 2-8 alkenylene and R 4 is C 1-4 alkyl.
Claim 3
Dependent Claim
33 words
A composition according to claim 1, in which R 1 is hydrogen, R 2 is C 1-4 alkyl or benzyl, R 2 is C 1-18 alkylene and R 4 is C 1-4 alkyl.
Claim 4
Dependent Claim
33 words
A composition according to claim 1, in which R 1 is hydrogen, R 2 is methyl or benzyl, R 3 is straight chain C 2-10 alkylene and R 4 is C 1-4 alkyl.
Claim 5
Dependent Claim
25 words
A composition according to claim 1, in which R 1 is hydrogen, R 2 is methyl, R 3 is octamethylene and R 4 is methyl.
Claim 6
Dependent Claim
23 words
A composition according to claim 1, wherein the compound of formula I is bis-(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate and the compound of formula II is mono-(1,2,2,6,6-pentamethyl-4-piperidinyl)monomethyl sebacate.
Claim 7
Dependent Claim
48 words
A process for the preparation of a composition according to claim 1, which process comprises reacting a piperidine of the formula III with a diester of the formula IV ##STR6## in which formulae R 1 , R 2 , R 3 and R 4 have the given meanings.
Claim 8
Dependent Claim
25 words
A process for stabilising plastics material against photochemical degradation, by the addition of 0.01 to 5% by weight of a composition according to claim 1.
Claim 9
Dependent Claim
26 words
Plastics material which has been stabilised against photochemical degradation and which contains, as stabiliser, 0,1 to 5% by weight of a composition according to claim 1.
Claim 10
Dependent Claim
11 words
Stabilised plastics material according to claim 8, which is a lacquer.
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) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |