Patent US5244971A successfully refreshed from Google Patents.
US5244971A
Expired / Lapsed
US
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Graft polymers for use in engineering thermoplastic blends
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1991-07-22
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Granted: 1993-09-14
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Expires: 2011-07-22
Abstract
Abstract Graft polymers for use as compatibilizers and/or modifiers for engineering thermoplastic compositions are provided comprising the reaction product of functionalized thermoplastic polymers with styrene-maleic anhydride copolymer. The functionalized thermoplastic polymers are based typically on polyolefin polymers and contain at least one functional group reactive either with styrene-maleic anhydride copolymer, or with direactive linking groups reactive with both of the functionalized thermoplastic polymer and styrene-maleic anhydride copolymer. The engineering thermoplastic compositions to be modified include polar engineering thermoplastics and the non-polar engineering thermoplastics based on styrene.
Inventors
- 👤 Dekoninck Jean-Marc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:58
CPC Classifications
C; C08; C08L; C08L69/00; C08G; C08G81/00; C08G81/02; C08L101/00; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L67/00; C08L67/02; C08L35/00; C08L35/06; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
An engineering thermoplastic composition, said composition excluding those comprising 50 wt % or greater styrene maleic anhydride copolymer as the engineering thermoplastic, comprising : (a) 5-95 wt % engineering thermoplastic at least partially compatible with styrene maleic anhydride copolymer ; (b) 0-95 wt % thermoplastic polymer ; and, (c) 2-50 wt % graft polymer comprising the reaction product of a functionalized thermoplastic polymer with styrene maleic anhydride copolymer.
Claim 2
Dependent Claim
68 words
An engineering thermoplastic composition, said composition excluding those comprising 50 wt % or greater styrene maleic anhydride copolymer as the engineering thermoplastic, comprising : (a) 5-95 wt % engineering thermoplastic at least partially compatible with styrene maleic anhydride copolymer ; (b) 0-95 wt % thermoplastic polymer ; and, (c) 2-50 wt % graft polymer comprising the reaction product of a functionalized thermoplastic polymer with styrene maleic anhydride copolymer.
Claim 3
Dependent Claim
51 words
The composition according to claim 1 wherein said engineering thermoplastic polymer is selected from the group consisting of: aliphatic or aromatic polycarbonates, polyesters, polyamides, styrene polymers, polyacetal, polyphenylene ether, acrylic ester polymers, methacrylic ester polymers, vinyl chloride polymers, vinylidene chloride polymers, vinyl fluoride polymers, and vinylidene fluoride polymers and mixtures thereof.
Claim 4
Dependent Claim
28 words
The composition according to claim 1 wherein said engineering thermoplastic composition comprises 5-50 wt % engineering thermoplastic, 50-95 wt % thermoplastic polymer and 2-25 wt % graft copolymer.
Claim 5
Dependent Claim
27 words
The composition according to claim 1 wherein said engineering thermoplastic composition comprises 50-95 wt % engineering thermoplastic, 0-40 wt % thermoplastic and 2-50 wt % graft polymer.
Claim 6
Dependent Claim
20 words
The composition according to claim 3 or 4 wherein said functionalized thermoplastic is at least partially compatible with said thermoplastic.
Claim 7
Dependent Claim
26 words
The composition according to claim 5 wherein said thermoplastic polymer is polypropylene and said functionalized thermoplastic polymer is polypropylene grafted with carboxylic acid group containing monomers.
Claim 8
Dependent Claim
34 words
The composition according to claim 4 wherein said functionalized thermoplastic comprises functionalized ethylene alpha-olefin elastomer and said thermoplastic comprises at least one member of group consisting of ethylene-alpha-olefin elastomer, polyethylene copolymer and ethylene-propylene copolymer.
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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) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |