US4599384A
Expired / Lapsed
US
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Novel EPDM-isobutylene graft copolymers
Assignee: AKRON AN OHIO UNIVERSITY, University of
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Filing: 1984-07-23
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Granted: 1986-07-08
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Expires: 2004-07-23
Abstract
Abstract Macromonomers of polymer-dicyclopentadiene and polymer-ethylidenenorbornene are prepared and then terpolymerized with ethylene and propylene. The terpolymer exhibits compatibilization of ethylene-propylene rubber and butyl rubber, and thus is useful as a sealant, roofing material, caulking agent, and the like.
Inventors
- 👤 Michael F. Farona
- 👤 Joseph P. Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/02; C08F290/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
An EPDM graft terpolymer, comprising: the terpolymer having ethylene and propylene units randomly distributed in the backbone thereof, the total number of said ethylene and propylene units being from about 100 to about 10,000, with the amount of ethylene units ranging from about 10 percent to about 90 percent based on the total number of ethylene and propylene units, from about 1 to 100 ##STR7## where R is a terpolymerizable head group selected from the group of dicyclopentadiene and ethylidenenorbornene, said R is attached to a polymer P polyisobutylene, wherein said graft copolymer has a molecular weight of from about 5,000 to about 1,000,000 as calculated by GPC method.
Claim 2
Dependent Claim
109 words
An EPDM graft terpolymer, comprising: the terpolymer having ethylene and propylene units randomly distributed in the backbone thereof, the total number of said ethylene and propylene units being from about 100 to about 10,000, with the amount of ethylene units ranging from about 10 percent to about 90 percent based on the total number of ethylene and propylene units, from about 1 to 100 ##STR7## where R is a terpolymerizable head group selected from the group of dicyclopentadiene and ethylidenenorbornene, said R is attached to a polymer P polyisobutylene, wherein said graft copolymer has a molecular weight of from about 5,000 to about 1,000,000 as calculated by GPC method.
Claim 3
Dependent Claim
27 words
An EPDM graft terpolymer, according to claim 1 wherein the number average molecular weight when said head group is ethylidenenorbornene is from about 50,000 to about 1,000,000.
Claim 4
Dependent Claim
47 words
An EPDM graft terpolymer, according to claim 1, wherein the number average molecular weight when said head group is said dicyclopentadiene is from about 10,000 to about 100,000 and wherein said molecular weight when said head group is said ethylidenenorbornene is from about 75,000 to about 150,000.
Claim 5
Dependent Claim
24 words
An EPDM graft terpolymer, according to claim 3, wherein the total number of ethylene and propylene units is from about 100 to about 3,000.
Claim 6
Dependent Claim
73 words
A process for making a graft terpolymer comprising the steps of: reacting monomers of ethylene and propylene with a macromonomer in the presence of a Ziegler-Natta catalyst combination, said ethylene and propylene monomers forming the backbone of the terpolymer and said macromonomer is a polymer attached to dicyclopentadiene or ethylidenenorborene, said dicyclopentadiene or ethylidenenorborene forming a portion of said backbone of said terpolymer and said polymer forming a pendant branch from said backbone.
Claim 7
Dependent Claim
73 words
A process for making a graft terpolymer comprising the steps of: reacting monomers of ethylene and propylene with a macromonomer in the presence of a Ziegler-Natta catalyst combination, said ethylene and propylene monomers forming the backbone of the terpolymer and said macromonomer is a polymer attached to dicyclopentadiene or ethylidenenorborene, said dicyclopentadiene or ethylidenenorborene forming a portion of said backbone of said terpolymer and said polymer forming a pendant branch from said backbone.
Claim 8
Dependent Claim
23 words
A process according to claim 5, including carrying out said reaction in a temperature of from about 0° C. to about 50° C.
Claim 9
Dependent Claim
42 words
A process according to claim 6, wherein said macromonomer is a polymer attached to dicyclopentadiene or said ethylidenenorbornene, said dicyclopentadiene or said ethylidenenorbornene forming a portion of said backbone of said terpolymer and said polymer forming a pendant branch from said backbone.
Claim 10
Dependent Claim
19 words
A process according to claim 5, wherein said polymer is selected from the group consisting of polyisobutylene and polystyrene.
Claim 11
Dependent Claim
25 words
A process according to claim 8, wherein the amount of said ethylene and propylene units in said backbone ranges from about 100 to about 10,000.
Claim 12
Dependent Claim
45 words
A process according to claim 9, wherein the molecular weight of said terpolymer is from about 5,000 to about 1,000,000 when said macromonomer contains dicyclopentadiene and from about 50,000 to about 1,000,000 when said macromonomer contains ethylidenenorbornene, the molecular weight being calculated by GPC method.
Claim 13
Dependent Claim
57 words
A process according to claim 10, wherein said Ziegler-Natta catalyst is selected from the group of organoaluminum compounds in combination with a vanadium compound, and wherein the amount of said catalyst is from about 0.03 to about 3 moles per mole of said macromonomer, and wherein said temperature is from about 15° C. to about 25° C.
Claim 14
Dependent Claim
19 words
A process according to claim 11, wherein the number of pendant grafts ranges from about 1 to about 100.
Claim 15
Dependent Claim
85 words
A process according to claim 12, wherein the total amount of said ethylene units and said propylene units ranges from about 100 to about 3,000 and wherein the molecular weight of said terpolymer when said macromonomer contains dicyclopentadiene ranges from about 10,000 to about 100,000 and wherein the molecular weight of said terpolymer when said macromonomer contains ethylidenenorbornene ranges from about 75,000 to about 150,000, and wherein the amount of said catalysts is from about 0.1 to about 0.6 moles per mole of said macromonomer.
Claim 16
Dependent Claim
50 words
A process according to claim 13, wherein said catalyst is a mixture of VOCl 3 and (C 2 H 5 ) 3 Al 2 Cl 3 and wherein the amount of said aluminum containing catalysts ranges from about 3 moles to about 5 moles per mole of vanadium containing catalyst.
Claim 17
Dependent Claim
14 words
The process of claim 5 wherein the polymer of the macromonomer is a polyisobutylene.
References Cited (Backward Citations)
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