US4885326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of stabilized synthetic resin
Assignee: Adeka Corp
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Filing: 1989-03-24
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Granted: 1989-12-05
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Expires: 2009-03-24
Abstract
Abstract A synthetic resin composition comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) and is stabilized to light and heat.
Inventors
- 👤 Tohru Haruna
- 👤 Kazunori Nishikawa
- 👤 Mitsuhiro Hamajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65744; C08K5/527
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A stabilized composition of a synthetic resin which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) having the formula (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) having the formula (II): ##STR6## in which R1 is tertiary-butyl or tertiary-amyl, R2 is an alkyl having 1 to 9 carbon atoms, R3 is hydrogen or an alkyl having 1 to 4 carbon atoms, R4 is an alkyl having 1 to 30 carbon atoms, R5 is an alkyl having 1 to 4 carbon atoms, R6 is a residual group of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol or a tetrahydric alcohol and n is a number of 1 to 4.
Claim 2
Dependent Claim
129 words
A stabilized composition of a synthetic resin which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) having the formula (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) having the formula (II): ##STR6## in which R1 is tertiary-butyl or tertiary-amyl, R2 is an alkyl having 1 to 9 carbon atoms, R3 is hydrogen or an alkyl having 1 to 4 carbon atoms, R4 is an alkyl having 1 to 30 carbon atoms, R5 is an alkyl having 1 to 4 carbon atoms, R6 is a residual group of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol or a tetrahydric alcohol and n is a number of 1 to 4.
References Cited (Backward Citations)
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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) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |