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US3876609A
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Use of xylene in controlling melt flow of modified polyolefin compositions
Assignee: Dart Industries Inc
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Filing: 1972-07-31
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Granted: 1975-04-08
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Expires: 1992-07-31
Abstract
Abstract In modified polyolefin compositions prepared by reacting an olefin polymer with a polymerizable compound generally defined by In the prsence of an organic peroxide, the melt flow may be controlled by including in the reaction mixture a quantity of xylene. The reaction product is particularly suited for reinforcement with filamentary material or as a coating on metallic surface.
Inventors
- 👤 Albert Schrage
- 👤 Philip D Readio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:31
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A SOLID PROCESS FOR PREPARING A MODIFIED POLYOLEFIN COMPOSITION HAVING IMPROVED MELT FLOW CHARACTERISTICS WHICH COMPRISES: A. PROVIDING AN OLEFIN POLYMER IN PARTICULATE FORM, SAID OLEFIN POLYMER BEING DERIVED FROM ALPHA-OLEFIN MONOMERS HAVING 2 TO 10 CARBON ATOMS, B. ADMIXING THE OLEFIN POLYMER IN PARTICULATE FORM WITH AN ORGANIC PEROXIDE, FROM 0.01 TO 10 PERCENT BASED ON THE WEIGHT OF THE OLEFIN POLYMER OF XYLENE AND FROM 0.01 TO 10 PERCENT BASED ON THE WEIGHT OF THE OLEFIN POLYMER OF A POLYMERIZABLE COMPOUND TO PROVIDE A SUBSTANTIALLY DRY MIXTURE, SAID POLYMERIZABLE COMPOUND BEING DEFINED BY
Claim 2
Dependent Claim
95 words
A SOLID PROCESS FOR PREPARING A MODIFIED POLYOLEFIN COMPOSITION HAVING IMPROVED MELT FLOW CHARACTERISTICS WHICH COMPRISES: A. PROVIDING AN OLEFIN POLYMER IN PARTICULATE FORM, SAID OLEFIN POLYMER BEING DERIVED FROM ALPHA-OLEFIN MONOMERS HAVING 2 TO 10 CARBON ATOMS, B. ADMIXING THE OLEFIN POLYMER IN PARTICULATE FORM WITH AN ORGANIC PEROXIDE, FROM 0.01 TO 10 PERCENT BASED ON THE WEIGHT OF THE OLEFIN POLYMER OF XYLENE AND FROM 0.01 TO 10 PERCENT BASED ON THE WEIGHT OF THE OLEFIN POLYMER OF A POLYMERIZABLE COMPOUND TO PROVIDE A SUBSTANTIALLY DRY MIXTURE, SAID POLYMERIZABLE COMPOUND BEING DEFINED BY
Claim 3
Dependent Claim
12 words
A process according to claim 1, wherein R.sup.1 is a C.sub.1 -C.sub.18
Claim 4
Dependent Claim
13 words
A process according to claim 1, wherein the reaction is conducted in the
Claim 5
Dependent Claim
11 words
A process according to claim 1, wherein the polymerizable compound is
Claim 6
Dependent Claim
11 words
A process according to claim 1, wherein the olefin polymer is
Claim 7
Dependent Claim
100 words
A particulate modified polyolefin composition obtained in a solid state process by reacting in a reaction zone a substantially dry mixture of a. at least one olefin polymer in particulate form and derived from alpha-olefin monomers having 2 to 10 carbon atoms, b. from about 0.01 to about 5 percent by weight based on the olefin polymer of an organic peroxide, c. from about 0.01 to about 10 percent by weight of the polyolefin polymer of xylene, and d. from about 0.01 to about 10 percent based on the weight of the polyolefin polymer of a polymerizable compound defined by
Claim 8
Dependent Claim
100 words
A particulate modified polyolefin composition obtained in a solid state process by reacting in a reaction zone a substantially dry mixture of a. at least one olefin polymer in particulate form and derived from alpha-olefin monomers having 2 to 10 carbon atoms, b. from about 0.01 to about 5 percent by weight based on the olefin polymer of an organic peroxide, c. from about 0.01 to about 10 percent by weight of the polyolefin polymer of xylene, and d. from about 0.01 to about 10 percent based on the weight of the polyolefin polymer of a polymerizable compound defined by
Claim 9
Dependent Claim
20 words
A modified polyolefin composition according to claim 6 wherein the olefin polymer is polypropylene, polyethylene, or a copolymer of ethylene
Claim 10
Dependent Claim
10 words
A modified polyolefin composition of claim 6 wherein the polymerizable
Claim 11
Dependent Claim
11 words
A modified polyolefin composition according to claim 6 containing 5 to
Claim 12
Dependent Claim
11 words
An article coated with the modified polyolefin composition of claim 6.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |