US3886227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grafted polyolefins as modifying agents for ungrated polyolefins
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-12-04
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Granted: 1975-05-27
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Expires: 1992-12-04
Abstract
Abstract Polymers, particularly polyolefins, which have been modified by being graft polymerized with from about 0.1 to 15 weight percent of a mono- or polycarboxylic unsaturated carboxylic acid monomer or derivative thereof, impart outstanding benefits to the characteristics of unmodified polyolefins when added thereto in concentrations of about 0.1 to 15 weight percent. Acrylic acid and glycidyl acrylate grafts are particularly outstanding for these purposes. And the unmodified polyolefins can be filled or unfilled grades.
Inventors
- 👤 Robert A Vanbrederode
- 👤 Robert A Steinkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
THE METHOD OF IMPROVING THE PROPERTIES, INCLUDING CRYSTALLIZATION RATES, OF A COMPOSITION COMPRISING NONGRAFTED CRYSTALLIZABLE POLYPROPYLENE WHICH COMPRISES: A. INCORPORATING INTO SAID CRYSTALLIZABLE POLYPROPYLENE FROM 0.1 TO 15 WEIGHT PERCENT OF A MODIFYING AGENT CONSISTING ESSENTIALLY OF A GRAFTED POLYOLEFIN WHEREIN SAID GRAFT COMPONENT COMPRISES 0.1 TO 15 WEIGHT PERCENT OF ACRYLIC ACID OR GLYCIDYL ACRYLATE, B. MELTING SAID CRYSTALLIZABLE POLYPROPYLENE, AND C. COOLING THE RESULTING BLEND TO THE TEMPERATURE OF CRYSTALLIZATION OF SAID BLEND AND THUS FORMING VERY SMALL SPERULITES BECAUSE OF THE PRESENCE OF SAID MODIFYING AGENT, WHEREIN SAID COMPOSITION ALSO CONTAINS IMPACT COMPONENTS SELECTED FROM THE GROUP CONSISTING OF OLEFIN ELASTOMERS, POLYETHYLENES AND COMBINATIONS THEREOF.
Claim 2
Independent Claim
108 words
THE METHOD OF IMPROVING THE PROPERTIES, INCLUDING CRYSTALLIZATION RATES, OF A COMPOSITION COMPRISING NONGRAFTED CRYSTALLIZABLE POLYPROPYLENE WHICH COMPRISES: A. INCORPORATING INTO SAID CRYSTALLIZABLE POLYPROPYLENE FROM 0.1 TO 15 WEIGHT PERCENT OF A MODIFYING AGENT CONSISTING ESSENTIALLY OF A GRAFTED POLYOLEFIN WHEREIN SAID GRAFT COMPONENT COMPRISES 0.1 TO 15 WEIGHT PERCENT OF ACRYLIC ACID OR GLYCIDYL ACRYLATE, B. MELTING SAID CRYSTALLIZABLE POLYPROPYLENE, AND C. COOLING THE RESULTING BLEND TO THE TEMPERATURE OF CRYSTALLIZATION OF SAID BLEND AND THUS FORMING VERY SMALL SPERULITES BECAUSE OF THE PRESENCE OF SAID MODIFYING AGENT, WHEREIN SAID COMPOSITION ALSO CONTAINS IMPACT COMPONENTS SELECTED FROM THE GROUP CONSISTING OF OLEFIN ELASTOMERS, POLYETHYLENES AND COMBINATIONS THEREOF.
Claim 3
Dependent Claim
64 words
A polymeric composition of matter comprising: a. a major portion of crystallizable polypropylene; and b. about 0.1 to 15 weight percent of an acrylic acid or glycidyl acrylate grafted C2 to C8 polyolefin containing from about 0.1 to 15 weight percent of said grafted component, wherein said composition also contains impact components selected from the group consisting of olefin elastomers, polyethylenes and combinations thereof.
Claim 4
Dependent Claim
64 words
A polymeric composition of matter comprising: a. a major portion of crystallizable polypropylene; and b. about 0.1 to 15 weight percent of an acrylic acid or glycidyl acrylate grafted C2 to C8 polyolefin containing from about 0.1 to 15 weight percent of said grafted component, wherein said composition also contains impact components selected from the group consisting of olefin elastomers, polyethylenes and combinations thereof.
Claim 5
Dependent Claim
41 words
A method according to claim 1 wherein said grafted polyolefin is acrylic acid or glycidyl acrylate grafted polypropylene and wherein said grafted acrylic acid or glycidyl acrylate is present in about 2 to 8 weIght percent based on said grafted polyolefin.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |