Patent US4381375A successfully refreshed from Google Patents.
US4381375A
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Method for vulcanizing ethylene/acrylic or vinyl ester/glycidyl(meth) acrylate copolymer with piperazinium diphenoxide salt of chloro-substituted phenol
Assignee: EIDP Inc
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Filing: 1981-12-28
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Granted: 1983-04-26
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Expires: 2001-12-28
Abstract
Abstract Elastomeric ethylene/acrylic or vinyl ester/glycidyl(meth)acrylate copolymers, optionally containing carbon monoxide moieties, are cured with piperazinium diphenoxide salts, e.g. piperazinium di-(2-chloro-4-nitrophenoxide).
Inventors
- 👤 Leon L. Harrell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5093
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
94 words
A vulcanizable elastomeric composition comprising a copolymer consisting essentially of copolymerized units of: (a) 25-65 weight percent of a comonomer selected from the group consisting of acrylic and vinyl ester, provided that the acrylic ester is other than glycidyl acrylate and glycidyl methacrylate, (b) 2-10 weight precent of a cure-site monomer selected from the group consisting of glycidyl acrylate and glycidyl methacrylate, (c) 0-15 weight percent carbon monoxide, (d) a complemental amount of ethylene from 30-70 weight percent, and a curing agent selected from the group consisting of piperazinium diphenoxide salts of chloro-substituted phenols.
Claim 2
Dependent Claim
94 words
A vulcanizable elastomeric composition comprising a copolymer consisting essentially of copolymerized units of: (a) 25-65 weight percent of a comonomer selected from the group consisting of acrylic and vinyl ester, provided that the acrylic ester is other than glycidyl acrylate and glycidyl methacrylate, (b) 2-10 weight precent of a cure-site monomer selected from the group consisting of glycidyl acrylate and glycidyl methacrylate, (c) 0-15 weight percent carbon monoxide, (d) a complemental amount of ethylene from 30-70 weight percent, and a curing agent selected from the group consisting of piperazinium diphenoxide salts of chloro-substituted phenols.
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein (a) the comonomer comprises 50-60 weight percent, (b) the cure-site monomer comprises 2-5 weight percent, and (c) the ethylene comprises 35-50 weight percent.
Claim 4
Dependent Claim
34 words
The composition of claim 1 wherein the comonomer is selected from the group consisting of C 4 -C 7 alkyl acrylates, C 5 -C 8 alkyl methacrylates, and C 3 -C 6 vinyl esters.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the comonomer is methyl acrylate.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the cure-site monomer is glycidyl methacrylate.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the curing agent is piperazinium di-(2-chloro-4-nitrophenoxide).
Claim 8
Dependent Claim
35 words
The composition of claim 1 wherein the copolymer consists essentially of copolymerized units of (a) about 54.4 weight percent methyl acrylate, (b) about 3.2 weight percent glycidyl methacrylate, and (c) about 42.4 weight percent ethylene.
Claim 9
Independent Claim
105 words
A method of vulcanizing an elastomeric composition, said composition comprising a copolymer consisting essentially of copolymerized units of: (a) 25-65 weight percent of a comonomer selected from the group consisting of acrylic and vinyl ester, provided that the acrylic ester is other than glycidyl acrylate and glycidyl methacrylate, (b) 2-10 weight percent of a cure-site monomer selected from the group consisting of glycidyl acrylate and glycidyl methacrylate, (c) 0-15 weight percent carbon monoxide, (d) a complemental amount of ethylene from 30-70 weight percent, said method comprising mixing with said composition a curing agent selected from the group consisting of piperazinium diphenoxide salts of chloro-substituted phenols.
Claim 10
Independent Claim
105 words
A method of vulcanizing an elastomeric composition, said composition comprising a copolymer consisting essentially of copolymerized units of: (a) 25-65 weight percent of a comonomer selected from the group consisting of acrylic and vinyl ester, provided that the acrylic ester is other than glycidyl acrylate and glycidyl methacrylate, (b) 2-10 weight percent of a cure-site monomer selected from the group consisting of glycidyl acrylate and glycidyl methacrylate, (c) 0-15 weight percent carbon monoxide, (d) a complemental amount of ethylene from 30-70 weight percent, said method comprising mixing with said composition a curing agent selected from the group consisting of piperazinium diphenoxide salts of chloro-substituted phenols.
Claim 11
Dependent Claim
31 words
The method of claim 8 wherein the curing agent is mixed with said composition in an amount of 0.21-0.87 moles of curing agent per mole of cure-site monomer in the composition.
Claim 12
Dependent Claim
38 words
The method of claim 8 wherein (a) the comonomer comprises 50-60 weight percent of the composition, (b) the cure-site monomer comprises 2-5 weight percent of the composition, and (c) the ethylene comprises 35-50 weight percent of the composition.
Claim 13
Dependent Claim
27 words
The method of claim 8 wherein (a) the comonomer is methyl acrylate, (b) the cure-site monomer is glycidyl methacrylate, and (c) the curing agent is piperazinium di-(2-chloro-4-nitrophenoxide).
Claim 14
Dependent Claim
9 words
Vulcanized articles produced from the composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |