US4473683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic copolymer rubber/styrenic amorphous resin blends
Assignee: Advanced Elastomer Systems LP
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Filing: 1982-12-03
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Granted: 1984-09-25
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Expires: 2002-12-03
Abstract
Abstract Improved thermoplastic compositions comprising blends of neutralized acrylic copolymer rubber and styrenic amorphous resin are described.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:24
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L25/00; C08L25/02; C08L25/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A thermoplastic composition comprising a blend of about 5 to 80 parts by weight of at least 10% partially neutralized, acid-containing acrylic copolymer rubber which is a polymer of at least 50 mole percent of ethylene, about 0.5 to 10 mole percent of acrylic acid and about 15 to 49.5 mole percent of alkyl acrylate, and about 95 to 20 parts by weight of styrene amorphous resin (SAR) which is selected from the group consisting of polystyrene (PS) resin, styrene/acrylonitrile (SAN) resin and acrylonitrile/butadiene/styrene (ABS) resin containing up to 30 wt. percent polybutadiene per 100 parts by weight of said rubber and SAR combined.
Claim 2
Dependent Claim
104 words
A thermoplastic composition comprising a blend of about 5 to 80 parts by weight of at least 10% partially neutralized, acid-containing acrylic copolymer rubber which is a polymer of at least 50 mole percent of ethylene, about 0.5 to 10 mole percent of acrylic acid and about 15 to 49.5 mole percent of alkyl acrylate, and about 95 to 20 parts by weight of styrene amorphous resin (SAR) which is selected from the group consisting of polystyrene (PS) resin, styrene/acrylonitrile (SAN) resin and acrylonitrile/butadiene/styrene (ABS) resin containing up to 30 wt. percent polybutadiene per 100 parts by weight of said rubber and SAR combined.
Claim 3
Dependent Claim
22 words
The composition of claim 1 in which the acrylic copolymer rubber is at least 50 to 100 percent neutralized with metal ion.
Claim 4
Dependent Claim
12 words
The composition of claim 2 in which the SAR is ABS resin.
Claim 5
Dependent Claim
40 words
The composition of claim 2 comprising 80 to 50 parts by weight of metal ion neutralized, acid-containing acrylic copolymer rubber and 20 to 50 parts by weight of SAR per 100 parts by weight of said rubber and SAR combined.
Claim 6
Dependent Claim
35 words
The composition of claim 4 comprising metal ion neutralized, acid-containing acrylic copolymer rubber and about 20 to 40 parts by weight percent of SAR per 100 parts by weight of said rubber and SAR combined.
Claim 7
Dependent Claim
16 words
The composition of claim 5 in which the source of metal ion is a metal oxide.
Claim 8
Dependent Claim
17 words
The composition of claim 6 in which the rubber is neutralized with magnesium ion or calcium ion.
Claim 9
Dependent Claim
37 words
The composition of claim 7 comprising a copolymer rubber containing about 1 to 5 weight percent of acrylic acid and about 0.5 to 5 parts by weight of metal oxide per 100 parts by weight of rubber.
Claim 10
Dependent Claim
14 words
The composition of claim 8 in which the rubber is neutralized with magnesium ion.
Claim 11
Dependent Claim
12 words
The composition of claim 9 in which the SAR is ABS resin.
References Cited (Backward Citations)
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US3437718A
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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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |