US3909463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grafted block copolymers of synthetic rubbers and polyolefins
Assignee: Paxon Polymer Co LP
•
Filing: 1972-02-02
•
Granted: 1975-09-30
•
Expires: 1992-02-02
Abstract
Abstract Grafted block copolymers of polyolefins and synthetic rubbers are prepared by mixing and heating a polyolefin such as polyethylene and a synthetic rubber such as butyl rubber in the presence of a bifunctional phenolic compound which acts as a grafting vehicle.
Inventors
- 👤 Paul F Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/021
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
162 words
A PROCESS FOR PRODUCING A GRAFTED BLOCK COPOLYMER COMPOSITION WICH COMPRISES FORMING AN INTIMATE MIXTURE COMPRISING: A. FROM ABOUT 40 TO 99 PARTS BY WEIGHT OF AN UNSATURATED OLEFIN POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTHENE-1, B. CORRESPONDINGLY FROM ABOUT 1 TO ABOUT 60 PARTS BY WEIGHT OF AN UNSATURATED, UNCURED SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF BUTYL RUBBER COPOLYMERS OF BUTADIENE AND STYRENE CONTAINING 5% BUTADIENE, COPOLYMERS OF BUTADIENE AND RYLONITRILE CONTAINING 40 TO 95% BUTADIENE, POLYBUTADIENE, AND TERPOLYMERS OF ETHYLENE, PROPYLENE AND A DIOLEFIN, AND C. AT LEAST 0.3% BY WEIGHT OF SAID OLEFIN POLYMER AND SYNTHETIC RUBBER OF A BIFUNCTIONAL PHENOL ALDEHYDE CONDENSATE WHERE THE FUNCTIONAL GROUPS ARE HYDROXY OR HALOGEN IN ORTHO POSITIONS, AND HEATING SAID MIXTURE AT A TEPERATURE BETWEEN ABOUT 250*F TO ABOUT 425*F. TO FORM A COPOLYMER IN WHICH TE SYNTHETIC RUBBER IS GRAFTED TO SAID OLEFIN POLYMER WHEREBY SAID COMPOSITION IS FREE OF SUBSTANTIAL AMOUNTS OF CROSSLINKED RUBBER.
Claim 2
Dependent Claim
162 words
A PROCESS FOR PRODUCING A GRAFTED BLOCK COPOLYMER COMPOSITION WICH COMPRISES FORMING AN INTIMATE MIXTURE COMPRISING: A. FROM ABOUT 40 TO 99 PARTS BY WEIGHT OF AN UNSATURATED OLEFIN POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTHENE-1, B. CORRESPONDINGLY FROM ABOUT 1 TO ABOUT 60 PARTS BY WEIGHT OF AN UNSATURATED, UNCURED SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF BUTYL RUBBER COPOLYMERS OF BUTADIENE AND STYRENE CONTAINING 5% BUTADIENE, COPOLYMERS OF BUTADIENE AND RYLONITRILE CONTAINING 40 TO 95% BUTADIENE, POLYBUTADIENE, AND TERPOLYMERS OF ETHYLENE, PROPYLENE AND A DIOLEFIN, AND C. AT LEAST 0.3% BY WEIGHT OF SAID OLEFIN POLYMER AND SYNTHETIC RUBBER OF A BIFUNCTIONAL PHENOL ALDEHYDE CONDENSATE WHERE THE FUNCTIONAL GROUPS ARE HYDROXY OR HALOGEN IN ORTHO POSITIONS, AND HEATING SAID MIXTURE AT A TEPERATURE BETWEEN ABOUT 250*F TO ABOUT 425*F. TO FORM A COPOLYMER IN WHICH TE SYNTHETIC RUBBER IS GRAFTED TO SAID OLEFIN POLYMER WHEREBY SAID COMPOSITION IS FREE OF SUBSTANTIAL AMOUNTS OF CROSSLINKED RUBBER.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the degree of unsaturation of the rubber is insufficient to cause substantial cross-linking.
Claim 4
Dependent Claim
23 words
The process of claim 2 in which the synthetic rubber is present in an amount between about 10 to 55 parts by weight.
Claim 5
Dependent Claim
31 words
The process of claim 3 in which the olefin polymer is polyethylene having a molecular weight of at least 8000 and containing no more than 3% of another alpha-olefin copolymerized therewith.
Claim 6
Dependent Claim
17 words
The process of claim 4 in which the polyethylene has a molecular weight of at least 20,000.
Claim 7
Dependent Claim
25 words
The process of claim 5 wherein the polyethylene has from about 0.05 to 0.5% unsaturation and the synthetic rubber has from 1 to 5% unsaturation.
Claim 8
Dependent Claim
13 words
The process of claim 6 in which the synthetic rubber is butyl rubber.
Claim 9
Dependent Claim
104 words
A grafted block copolymer comprising (A) a polyolefin selected from the group consisting of polyethylene, polypropylene and polybutene-1 and (B) a synthetic rubber grafted to said polyolefin through a bifunctional phenol aldehyde condensate wherein the functional groups are hydroxy or halogen in ortho positions, said synthetic rubber being present in the copolymer in amounts of from about 1 to about 50% by weight of the copolymer and selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene, and terpolymers of ethylene, propylene and a diolefin.
Claim 10
Dependent Claim
104 words
A grafted block copolymer comprising (A) a polyolefin selected from the group consisting of polyethylene, polypropylene and polybutene-1 and (B) a synthetic rubber grafted to said polyolefin through a bifunctional phenol aldehyde condensate wherein the functional groups are hydroxy or halogen in ortho positions, said synthetic rubber being present in the copolymer in amounts of from about 1 to about 50% by weight of the copolymer and selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene, and terpolymers of ethylene, propylene and a diolefin.
Claim 11
Dependent Claim
35 words
The grafted block copolymer of claim 8 wherein the polyolefin is polyethylene containing no more than about 3% of another alpha-olefin copolymerized therewith and having a molecular weight of at least 8000 prior to grafting.
Claim 12
Dependent Claim
26 words
The grafted block copolymer of claim 9 wherein the amount of grafted synthetic rubber is between about 5% and 30% by total weight of the copolymer.
Claim 13
Dependent Claim
14 words
The grafted block copolymer of claim 10 wherein the synthetic rubber is butyl rubber.
Claim 14
Dependent Claim
10 words
Plastic foam of the grafted block copolymer of claim 9.
Claim 15
Dependent Claim
34 words
A composition comprising 2 to 90% by weight of the grafted block copolymer of claim 9 and correspondingly 10 to 98% by weight of a linear polyethylene having a density of at least 0.94.
Claim 16
Dependent Claim
52 words
The composition of claim 13 wherein the grafted block copolymer is present in an amount between about 8% to 75% by weight and comprises butyl rubber grafted to a branched polyethylene having density less than 0.94, and in which the linear polyethylene is present correspondingly in an amount between 25 to 92%.
Claim 17
Dependent Claim
8 words
Plastic foam of the composition of claim 14.
Claim 18
Dependent Claim
24 words
The copolymer of claim 8 including 10 to 80 parts of conductive carbon black per 100 parts of weight of the grafted block copolymer.
Claim 19
Dependent Claim
24 words
The copolymer of claim 11 including 10 to 80 parts of conductive carbon black per 100 parts by weight of the grafted block copolymer.
Claim 20
Dependent Claim
116 words
A curable composition comprising a blend of (1) a polyolefin selected from the group consisting of polyethylene, stereoregular polypropylene and polybutene-1, (2) a synthetic rubber selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene and terpolymers of ethylene, propylene and a diolefin, and (3) a halogenated or hydroxylated phenol-aldehyde resin, said synthetic rubber being present in an amount of about 1 to about 30 wt. percent, based on the amount of synthetic rubber plus polyolefin and said resin being present in an amount of about 1 to about 1500 parts per 100 parts of synthetic rubber.
Claim 21
Dependent Claim
116 words
A curable composition comprising a blend of (1) a polyolefin selected from the group consisting of polyethylene, stereoregular polypropylene and polybutene-1, (2) a synthetic rubber selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene and terpolymers of ethylene, propylene and a diolefin, and (3) a halogenated or hydroxylated phenol-aldehyde resin, said synthetic rubber being present in an amount of about 1 to about 30 wt. percent, based on the amount of synthetic rubber plus polyolefin and said resin being present in an amount of about 1 to about 1500 parts per 100 parts of synthetic rubber.
Claim 22
Dependent Claim
60 words
A curable composition comprising a blend of an EPDM elastomer, stereoregular polypropylene and a halogenated phenol-aldehyde resin, said elastomer being present in an amount of about 1 to about 30 wt. percent, based on the amount of elastomer plus polypropylene and said resin being present in an amount of about 1 to about 1500 parts, per 100 parts of elastomer.
Claim 23
Dependent Claim
60 words
A curable composition comprising a blend of an EPDM elastomer, stereoregular polypropylene and a halogenated phenol-aldehyde resin, said elastomer being present in an amount of about 1 to about 30 wt. percent, based on the amount of elastomer plus polypropylene and said resin being present in an amount of about 1 to about 1500 parts, per 100 parts of elastomer.
Claim 24
Dependent Claim
59 words
A composition comprising a blend of an EPDM elastomer, stereoregular polypropylene and a halogenated phenol-aldehyde resin, said elastomer being present in an amount of about 1 to about 30 wt. percent, based on the amount of elastomer plus polypropylene and said resin being present in an amount of about 1 to about 1500 parts, per 100 parts of elastomer.
Claim 25
Dependent Claim
59 words
A composition comprising a blend of an EPDM elastomer, stereoregular polypropylene and a halogenated phenol-aldehyde resin, said elastomer being present in an amount of about 1 to about 30 wt. percent, based on the amount of elastomer plus polypropylene and said resin being present in an amount of about 1 to about 1500 parts, per 100 parts of elastomer.
Claim 26
Dependent Claim
103 words
A grafted block copolymer comprising (A) a polyolefin selected from the group consisting of polyethylene, polypropylene and polybutene-1 and (B) a synthetic rubber grafted to said polyolefin through a bifunctional phenol aldehyde condensate wherein the functional groups are hydroxy or halogen in ortho positions, said synthetic rubber being present in the copolymer in amounts of from about 1 to 30% by weight of the copolymer and selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene and terpolymers of ethylene, propylene and a diolefin.
Claim 27
Dependent Claim
103 words
A grafted block copolymer comprising (A) a polyolefin selected from the group consisting of polyethylene, polypropylene and polybutene-1 and (B) a synthetic rubber grafted to said polyolefin through a bifunctional phenol aldehyde condensate wherein the functional groups are hydroxy or halogen in ortho positions, said synthetic rubber being present in the copolymer in amounts of from about 1 to 30% by weight of the copolymer and selected from the group consisting of butyl rubber, copolymers of butadiene and styrene containing 50 to 95% butadiene, copolymers of butadiene and acrylonitrile containing 40 to 95% butadiene, polybutadiene and terpolymers of ethylene, propylene and a diolefin.
Claim 28
Dependent Claim
13 words
The copolymers of claim 8 wherein said condensate is a brominated hydroxymethyl phenol.
References Cited (Backward Citations)
US3122519A
Cited
US3336244A
Cited
US3287440A
Cited
US3296333A
Cited
US3489697A
Cited
US3402140A
Cited
US3534119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |