US5164435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized thermoplastic ppo resin composition
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1991-09-19
•
Granted: 1992-11-17
•
Expires: 2011-09-19
Abstract
Abstract A stabilized thermoplastic resin composition is provided which comprises the following components (i), (ii) and (iii): (i) 100 parts by weight, based on the total amount of the following (A), (B) and (C), of a mixture comprising (A) about 10-100% by weight of a polyphenylene ether, (B) 0-about 90% by weight of an alkenyl aromatic resin, and (C) 0-about 90% by weight of a crystalline thermoplastic resin, total amount of (A) and (B) being at least about 15% by weight of the total amount of (A), (B) and (C), (ii) 1-50 parts by weight of an alkenyl aromatic elastomer (non-hydrogenated), and (iii) a stabilizer comprising (D) 0.01-5 parts by weight of a sulfur compound and (E) 0.01-5 parts by weight of at least one phenol compound.
Inventors
- 👤 Hiroomi Abe
- 👤 Kenji Nagaoka
- 👤 Yasuro Suzuki
- 👤 Takashi Sanada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:07
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/36; C08K5/37; C08K5/372; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L59/00; C08L67/00; C08L77/00; C08L81/00; C08L81/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
A stabilized thermoplastic resin composition which comprises the following components (i), (ii) and (iii): (i) 100 parts by weight, based on the total amount of the following (A), (B) and (C), of a mixture comprising (A) about 10-100% by weight of a polyphenylene ether, (B) 0-about 90% by weight of an alkenyl aromatic resin, and (C) 0-about 90% by weight of a crystalline thermoplastic resin, total amount of (A) and (B) being at least about 15% by weight of the total amount of (A), (B) and (C), (ii) 1-50 parts by weight of an alkenyl aromatic elastomer (non-hydrogenated), and (iii) a stabilizer comprising (D) 0.01-5 parts by weight of a sulfur compound represented by the following formula (I) and (E) 0.01-5 parts by weight of at least one phenol compound represented by the following formulas (II)-1-(II)-4, (III) and (IV), the weight ratio of (D) and (E) being 1:0.1-5, ##STR21## wherein R 1 represents an alkyl group of 4-20 carbon atoms, ##STR22## wherein R 2 represents an alkyl group of 1-4 carbon atoms, ##STR23## wherein R 3 represents an alkyl group of 1-3 carbon atoms, ##STR24##
Claim 2
Dependent Claim
185 words
A stabilized thermoplastic resin composition which comprises the following components (i), (ii) and (iii): (i) 100 parts by weight, based on the total amount of the following (A), (B) and (C), of a mixture comprising (A) about 10-100% by weight of a polyphenylene ether, (B) 0-about 90% by weight of an alkenyl aromatic resin, and (C) 0-about 90% by weight of a crystalline thermoplastic resin, total amount of (A) and (B) being at least about 15% by weight of the total amount of (A), (B) and (C), (ii) 1-50 parts by weight of an alkenyl aromatic elastomer (non-hydrogenated), and (iii) a stabilizer comprising (D) 0.01-5 parts by weight of a sulfur compound represented by the following formula (I) and (E) 0.01-5 parts by weight of at least one phenol compound represented by the following formulas (II)-1-(II)-4, (III) and (IV), the weight ratio of (D) and (E) being 1:0.1-5, ##STR21## wherein R 1 represents an alkyl group of 4-20 carbon atoms, ##STR22## wherein R 2 represents an alkyl group of 1-4 carbon atoms, ##STR23## wherein R 3 represents an alkyl group of 1-3 carbon atoms, ##STR24##
Claim 3
Dependent Claim
90 words
A resin composition according to claim 1, wherein the polyphenyl ether (i) (A) is a polymer obtained by oxidation polymerization of at least one phenol compound represented by the following formula: ##STR25## wherein R 1 , R 2 , R 3 , R 4 and R 5 each represents a hydrogen atom, a halogen atom, a hydrocarbon group, or a substituted hydrocarbon group, with a proviso that at least one of R 1 -R 5 is a hydrogen atom, with oxygen or an oxygen-containing gas using an oxidation coupling catalyst.
Claim 4
Dependent Claim
99 words
A resin composition according to claim 1, wherein the alkenyl aromatic resin (i) (B) is a resin which is partially or wholly derived from an alkenyl aromatic compound represented by the following formula: ##STR26## wherein R 1 and R 2 are independently selected from the group consisting of lower alkyl and alkenyl of 1-6 carbon atoms and hydrogen, n is an integer of 1-5 and R 3 is selected from the group consisting of hydrogen, chlorine, bromine and lower alkyl of 1-6 carbon atoms and when n is an integer of 2-5, R 3 may be identical or different.
Claim 5
Dependent Claim
33 words
A resin composition according to claim 1, wherein the crystalline thermoplastic resin (i) (C) is at least one resin selected from polyethylene, polypropylene, polyamide, thermoplastic polyester, polyacetal, polyphenylene sulfide and polyether ether ketone.
Claim 6
Dependent Claim
17 words
A resin composition according to claim 4, wherein the crystalline thermoplastic resin (i) (C) is a polyamide.
Claim 7
Dependent Claim
115 words
A resin composition according to claim 1, wherein the alkenyl aromatic elastomer (ii) is a copolymer comprising an alkenyl aromatic compound represented by the following formula: ##STR27## wherein R 1 and R 2 are independently selected from the group consisting of lower alkyl and alkenyl of 1-6 carbon atoms and hydrogen, n is an integer of 1-5 and when n is 1, R 3 is selected from the group consisting of hydrogen, chlorine, bromine and lower alkyl of 1-6 carbon atoms and when n is an integer of 2-5, R 3 which may be identical or different are independently selected from the group consisting of hydrogen, chlorine, bromine, and lower alkyl of 1-6 carbon atoms.
Claim 8
Dependent Claim
18 words
A resin composition according to claim 6, wherein the alkenyl aromatic elastomer (ii) is a styrene-butadiene-styrene block copolymer.
Claim 9
Dependent Claim
30 words
A resin composition according to claim 1, wherein the sulfur compound (iii) (D) is represented by the formula (I) wherein R 1 is an alkyl group of 3-18 carbon atoms.
Claim 10
Dependent Claim
20 words
A resin composition according to claim 8, wherein the sulfur compound (iii) (D) is represented by the following formula: ##STR28##
Claim 11
Dependent Claim
19 words
A resin composition according to claim 1, wherein the phenol compound (E) is represented by the following formula: ##STR29##
References Cited (Backward Citations)
US3578625A
Cited
US3758549A
Cited
US3816562A
Cited
SU458556A1
Cited
US4002701A
Cited
US4309335A
Cited
US4507417A
Cited
US4576734A
Cited
US4772664A
Cited
US5047461A
Cited
US4997612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |