US4234707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric light stabilizers for plastics
Assignee: BASF Corp
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Filing: 1978-11-01
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Granted: 1980-11-18
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Expires: 1998-11-01
Abstract
Abstract Blocking of the end groups of condensation and addition polymers which can be used as light stabilizers and in which the recurring structural unit contains a polyalkylpiperidine residue of the formula ##STR1## or is substituted by a polyalkylpiperidine side group of the formula ##STR2## in which R is hydrogen or alkyl having 1-5 C atoms and R' is hydrogen, alkyl having 1-12 C atoms, alkeny having 3-8 C atoms, alkynyl having 3-6 C atoms, aralkyl having 7-12 C atoms, alkanoyl having 1-8 C atoms or alkenoyl having 3-5 C atoms, is effected by adding a monofunctional compound during the preparation of the polymers, or by reacting the polymer, after it has been prepared, with a monofunctional compound. Examples of monofunctional compounds are monocarboxylic acids, monoalcohols, monoamines or monoisocyanates. The polymeric light stabilizers become more stable as a result of the blocking of the end groups.
Inventors
- 👤 Jean Rody
- 👤 Erwin Nikles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:47
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0627; C08L; C08L101/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
A condensation or addition polymer selected from the group consisting of a polyester, polyamide, polyurethane, polyurea, polyether, polyamine or polyaminotriazine which has blocked end groups and can be used as a light stabiliser and in which the recurring structural unit contains a polyalkylpiperidine residue of the formula ##STR12## or is substituted by a polyalkylpiperidine side group of the formula ##STR13## in which R is hydrogen or alkyl having 1-5 C atoms and R' is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-8 C atoms, alkynyl having 3-6 C atoms, aralkyl having 7-11 C atoms, alkanoyl having 1-8 C atoms or alkenoyl having 3-5 C atoms, or a copolymer of such polymers with one another or with a polyalkylpiperidine-free component, the end groups of the said polymer or copolymer having been blocked by the addition of a monofunctional compound during its preparation or by its subsequent reaction with a monofunctional compound.
Claim 2
Dependent Claim
151 words
A condensation or addition polymer selected from the group consisting of a polyester, polyamide, polyurethane, polyurea, polyether, polyamine or polyaminotriazine which has blocked end groups and can be used as a light stabiliser and in which the recurring structural unit contains a polyalkylpiperidine residue of the formula ##STR12## or is substituted by a polyalkylpiperidine side group of the formula ##STR13## in which R is hydrogen or alkyl having 1-5 C atoms and R' is hydrogen, alkyl having 1-12 C atoms, alkenyl having 3-8 C atoms, alkynyl having 3-6 C atoms, aralkyl having 7-11 C atoms, alkanoyl having 1-8 C atoms or alkenoyl having 3-5 C atoms, or a copolymer of such polymers with one another or with a polyalkylpiperidine-free component, the end groups of the said polymer or copolymer having been blocked by the addition of a monofunctional compound during its preparation or by its subsequent reaction with a monofunctional compound.
Claim 3
Dependent Claim
24 words
A polymer according to claim 1, in which R is hydrogen and R' is hydrogen, alkyl having 1-4 C atoms, allyl, benzyl or acetyl.
Claim 4
Dependent Claim
17 words
A polymer according to claim 2, in which R is hydrogen and R' is hydrogen or methyl.
Claim 5
Dependent Claim
145 words
A polymer according to claim 1, which is a polyester, polyamide or polyester-amide of the general formula VIII ##STR14## in which X and X' are oxygen or NY and Y is hydrogen, alkyl having 1-12 C atoms, cyclohexyl, aralkyl having 7-9 C atoms, phenyl or a polyalkylpiperidine residue, A and B are divalent organic residues and at least one of A, B and Y contains a polyalkylpiperidine residue, n is a value from 2 to about 50, T is an end group of the formula --OH or --O(C 1 -C 4 alkyl) and T' is a blocked end group of the formula --CO--R 3 , --CO--NH--R 4 , --SO 2 --R 5 , --CH 2 CH(OH)R 6 or --CH 2 CH(OH)--CH 2 --O--R 7 , in which R 3 , R 4 , R 5 , R 6 and R 7 are monovalent hydrocarbon residues.
Claim 6
Dependent Claim
67 words
A polymer according to claim 4, wherein, in the formulae for the blocked end groups, R 3 is alkyl having 1-12 C atoms or phenyl, R 4 is alkyl having 1-12 C atoms, cyclohexyl or phenyl, R 5 is alkyl having 1-4 C atoms, phenyl or tolyl, R 6 is hydrogen, methyl, ethyl or phenyl and R 7 is alkyl having 1-8 C atoms, cyclohexyl or phenyl.
Claim 7
Dependent Claim
91 words
A polymer according to claim 1, of the formula (IX) ##STR15## in which X and X' are oxygen or NY and Y is hydrogen, C 1 -C 12 alkyl, cyclohexyl, C 7 -C 9 aralkyl, phenyl or a polyalkylpiperidine residue, A and B are divalent organic residues and at least one of A, B and Y contains a polyalkylpiperidine residue, n is a value from 2 to about 50, T is an end group of the formula --OH or --O(C 1 -C 4 alkyl) and T" is a monovalent hydrocarbon residue.
Claim 8
Dependent Claim
24 words
A polymer according to claim 6, of the formula IX, in which T" is alkyl having 1-12 C atoms, cyclohexyl, benzyl, phenyl or tolyl.
Claim 9
Dependent Claim
10 words
A polymer according to claim 1 which is a polyester.
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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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |