US4495324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass reinforced polyamide composition containing acrylic core/shell polymer
Assignee: BASF SE
•
Filing: 1983-11-10
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Granted: 1985-01-22
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Expires: 2003-11-10
Abstract
Abstract A composition comprising a polyamide, a reinforcing amount of glass fiber, and 1 to 25, preferably 5 to 25, and more preferably 10 to 20 percent by weight based on the weight of the polyamide of a core/shell polymer. The core/shell polymer comprises 40 to 90 and preferably 50 to 90 parts by weight of an elastomer core and 10 to 60 and preferably 10 to 50 parts by weight of a rigid thermoplastic polymer shell. The shell comprises an interpolymer of 20 to 100 parts by weight of an methyacrylic ester, 0 to 80 parts by weight styrene, and from 0 to 50 parts by weight of acylonitrile. The shell can also contain alkyl acrylates, allyl methacrylates, diallyl methacrylates, and the like. The methacrylic ester is preferably a lower alkyl methacrylate/such as methyl methacrylate. The core is an elastomer and can be a diene elastomer, an ethylene-propylene-diene rubber, an acrylic elastomer, or a polyurethane elastomer.
Inventors
- 👤 Varkki P. Chacko
- 👤 Timothy J. Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:29
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of the polyamide of a core/shell polymer wherein the core/shell polymer comprises 40 to 90 parts by weight of an elastomeric core comprising an acrylic elastomer and 10 to 60 parts by weight of a rigid shell, the shell consisting essentially of from 20 to 100 parts by weight of a methacrylic ester, 0 to 80 parts by weight of styrene, and 0 to 50 parts of weight of acrylonitrile.
Claim 2
Dependent Claim
93 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of the polyamide of a core/shell polymer wherein the core/shell polymer comprises 40 to 90 parts by weight of an elastomeric core comprising an acrylic elastomer and 10 to 60 parts by weight of a rigid shell, the shell consisting essentially of from 20 to 100 parts by weight of a methacrylic ester, 0 to 80 parts by weight of styrene, and 0 to 50 parts of weight of acrylonitrile.
Claim 3
Dependent Claim
28 words
The composition as recited in claim 1 wherein there is from 10 to 25 percent by weight based on the weight of the polyamide of the core/shell polymer.
Claim 4
Dependent Claim
28 words
The composition as recited in claim 1 wherein there is from 5 to 20 percent by weight based on the weight of the polyamide of a core/shell polymer.
Claim 5
Dependent Claim
13 words
The composition as recited in claim 1 wherein the shell is poly(methyl methacrylate).
Claim 6
Dependent Claim
18 words
The composition as recited in claim 1 wherein the elastomer is selected from poly(butyl acrylate), and poly(ethyl acrylate).
Claim 7
Dependent Claim
39 words
The composition as recited in claim 1 wherein the shell consisting essentially of 5 to 50 parts by weight of styrene, 20 to 85 parts by weight of methacrylic ester, and 10 to 50 parts by weight of acrylonitrile.
Claim 8
Dependent Claim
85 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of polyamide of a core/shell polymer wherein the core/shell polymer comprises 25 to 95 parts by weight of an elastomeric core comprising an acrylic elastomer and from 5 to 75 parts by weight of a rigid shell wherein the shell is polymerized from monomers selected from the group consisting of methacrylic esters, styrene, acrylonitrile, alkyl acrylates, allyl esters and a mixture thereof.
Claim 9
Dependent Claim
85 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of polyamide of a core/shell polymer wherein the core/shell polymer comprises 25 to 95 parts by weight of an elastomeric core comprising an acrylic elastomer and from 5 to 75 parts by weight of a rigid shell wherein the shell is polymerized from monomers selected from the group consisting of methacrylic esters, styrene, acrylonitrile, alkyl acrylates, allyl esters and a mixture thereof.
Claim 10
Dependent Claim
21 words
The composition as recited in claim 7 wherein the core further comprises from 0.1 to 5 percent of a crosslinking monomer.
Claim 11
Dependent Claim
87 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of the polyamide of a core/shell polymer wherein the core/shell polymer comprises 25 to 95 parts by weight of an elastomeric core comprising an acrylic elastomer and from 5 to 75 parts by weight of a rigid shell wherein the shell is polymerized from at least one monomer selected from the group consisting of methacrylic esters, styrene, acrylonitrile, alkyl acrylates, and a mixture thereof.
Claim 12
Dependent Claim
87 words
A composition comprising: a polyamide; a reinforcing amount of glass fiber; and from 1 to 25 percent by weight based on the weight of the polyamide of a core/shell polymer wherein the core/shell polymer comprises 25 to 95 parts by weight of an elastomeric core comprising an acrylic elastomer and from 5 to 75 parts by weight of a rigid shell wherein the shell is polymerized from at least one monomer selected from the group consisting of methacrylic esters, styrene, acrylonitrile, alkyl acrylates, and a mixture thereof.
Claim 13
Dependent Claim
21 words
The composition as recited in claim 9 wherein there is from 20 to 100 parts by weight of a methacrylic ester.
Claim 14
Dependent Claim
21 words
The composition as recited in claim 9 wherein the core further comprises from 0.1 to 5 percent of a crosslinking monomer.
Claim 15
Dependent Claim
14 words
The composition as recited in claim 7 wherein the methacrylic ester is alkyl methacrylate.
Claim 16
Dependent Claim
23 words
The composition as recited in claim 9 wherein the methacrylic ester is selected from the group consisting of alkyl methacrylate and diallyl methacrylate.
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |