US4017559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyblend containing two grafted rubber components
Assignee: Monsanto Co
•
Filing: 1975-07-01
•
Granted: 1977-04-12
•
Expires: 1995-07-01
Abstract
Abstract This invention relates to a polyblend composition and a method for preparing same, said composition comprising a copolymer of a monovinylidene aromatic monomer such as styrene and an unsaturated nitrile monomer such as acrylonitrile blended with a grafted chloroprene rubber, a grafted polybutadiene rubber and a metal oxide.
Inventors
- 👤 Gary L. Deets
- 👤 Robert L. Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:09
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08L51/00; C08L51/04; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
265 words
A polyblend composition comprising: A. a polymer of a monovinylidene aromatic monomer and an ethylenically unsaturated nitrile monomer wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer is in the range of 80/20 to 20/80; B. from 16.5 to 80% by weight based on the total weight of the polyblend, of a grafted, crosslinked polychloroprene rubber having a Mooney viscosity of at least 200 (MS 2-1/2 min. 212° F.), said rubber being grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; wherein the amount of polychloroprene rubber in the polyblend, calculated as ungrafted rubber, is in the range of from 15 to 40% by weight, based on the total weight of the polyblend and wherein the particle size of the polychloroprene rubber prior to grafting is in the range of from 0.05 to 0.20 micron; C. from 0.5 to 5% by weight, based on the total weight of the polyblend, of a butadiene rubber having a particle size in the range of from 0.07 to 4.0 microns, said butadiene rubber having been grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; and D. from 6 to 12% by weight, based on the total weight of the polyblend of Sb 2 O 3 .
Claim 2
Dependent Claim
265 words
A polyblend composition comprising: A. a polymer of a monovinylidene aromatic monomer and an ethylenically unsaturated nitrile monomer wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer is in the range of 80/20 to 20/80; B. from 16.5 to 80% by weight based on the total weight of the polyblend, of a grafted, crosslinked polychloroprene rubber having a Mooney viscosity of at least 200 (MS 2-1/2 min. 212° F.), said rubber being grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; wherein the amount of polychloroprene rubber in the polyblend, calculated as ungrafted rubber, is in the range of from 15 to 40% by weight, based on the total weight of the polyblend and wherein the particle size of the polychloroprene rubber prior to grafting is in the range of from 0.05 to 0.20 micron; C. from 0.5 to 5% by weight, based on the total weight of the polyblend, of a butadiene rubber having a particle size in the range of from 0.07 to 4.0 microns, said butadiene rubber having been grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; and D. from 6 to 12% by weight, based on the total weight of the polyblend of Sb 2 O 3 .
Claim 3
Dependent Claim
23 words
A polyblend composition as in claim 1 wherein the nitrile monomer is selected from the group consisting of acrylonitrile, methacrylonitrile and mixtures thereof.
Claim 4
Dependent Claim
25 words
A polyblend composition of claim 1 wherein the aromatic monomer is selected from the group consisting of styrene, alpha-methyl styrene, chlorostyrene, bromostyrene and mixtures thereof.
Claim 5
Dependent Claim
25 words
A polyblend composition as in claim 1 wherein the amount of grafted butadiene rubber is in the range of from 1 to 3% by weight.
Claim 6
Dependent Claim
274 words
An article of manufacture comprising an object formed from a polyblend composition comprising: A. a polymer of a monovinylidene aromatic monomer and an ethylenically unsaturated nitrile monomer wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer is in the range of 80/20 to 20/80; B. from 16.5 to 80% by weight based on the total weight of the polyblend, of a grafted, crosslinked polychloroprene rubber having a Mooney viscosity of at least 200 (MS 2-1/2 min. 212° F.), said rubber being grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; wherein the amount of polychloroprene rubber in the polyblend, calculated as ungrafted rubber, is in the range of from 15 to 40% by weight, based on the total weight of the polyblend and wherein the particle size of the polychloroprene rubber prior to grafting is in the range of from 0.05 to 0.20 micron; C. from 0.5 to 5% by weight, based on the total weight of the polyblend, of a butadiene rubber having a particle size in the range of from 0.7 to 4.0 microns, said butadiene rubber having been grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; and D. from 6 to 12% by weight, based on the total weight of the polyblend of Sb 2 O 3 .
Claim 7
Dependent Claim
274 words
An article of manufacture comprising an object formed from a polyblend composition comprising: A. a polymer of a monovinylidene aromatic monomer and an ethylenically unsaturated nitrile monomer wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer is in the range of 80/20 to 20/80; B. from 16.5 to 80% by weight based on the total weight of the polyblend, of a grafted, crosslinked polychloroprene rubber having a Mooney viscosity of at least 200 (MS 2-1/2 min. 212° F.), said rubber being grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; wherein the amount of polychloroprene rubber in the polyblend, calculated as ungrafted rubber, is in the range of from 15 to 40% by weight, based on the total weight of the polyblend and wherein the particle size of the polychloroprene rubber prior to grafting is in the range of from 0.05 to 0.20 micron; C. from 0.5 to 5% by weight, based on the total weight of the polyblend, of a butadiene rubber having a particle size in the range of from 0.7 to 4.0 microns, said butadiene rubber having been grafted with: 1. at least one monovinylidene aromatic monomer, and 2. an ethylenically unsaturated nitrile monomer; wherein the weight ratio of monovinylidene aromatic monomer to nitrile monomer in the grafted rubber is in the range of 80/20 to 20/80; and D. from 6 to 12% by weight, based on the total weight of the polyblend of Sb 2 O 3 .
Claim 8
Dependent Claim
22 words
An article as in claim 5 wherein the nitrile monomer is selected from the group consisting of acrylonitrile, methacrylonitrile and mixtures thereof.
Claim 9
Dependent Claim
25 words
An article as in claim 5 wherein the aromatic monomer is selected from the group consisting of styrene, alphamethyl styrene, chlorostyrene, bromostyrene and mixtures thereof.
Claim 10
Dependent Claim
24 words
An article as in claim 5 wherein the amount of grafted butadiene rubber is in the range of from 1 to 3% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |