Patent US4575000A successfully refreshed from Google Patents.
Patent US3714115A successfully refreshed from Google Patents.
US3714115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric composition of neoprene, polyether polyprimary polyamine and a basic curing agent
Assignee: 3M Co
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Filing: 1970-11-02
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Granted: 1973-01-30
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Expires: 1990-11-02
Abstract
Abstract Curable elastomeric compositions comprising neoprene, at least one neoprene curing agent, and a polyether polyprimary polyamine having a polyether moiety containing recurring oxyalkylene groups in which the alkylene has from two to six carbon atoms, said polyether polyprimary polyamine having a molecular weight of at least about 3500 and cured products obtained therefrom.
Inventors
- 👤 N Jonnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:20
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08L11/00; C08L71/00; C08L71/02; C08G2650/00; C08G2650/28; C08G2650/50; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08L27/00; C08L27/02; C08L27/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
Curable elastomeric compositions comprising neoprene, at least one neoprene curing agent selected from the group consisting of an aliphatic amine base having a base strength at least that of benzylamine and a basic inorganic metal oxide, and a polyether polyprimary polyamine having a polyether moiety containing recurring oxyalkylene groups in which the alkylene has from two to six carbon atoms, said polyether polyprimary polyamine having a molecular weight of at least about 3,500.
Claim 2
Dependent Claim
73 words
Curable elastomeric compositions comprising neoprene, at least one neoprene curing agent selected from the group consisting of an aliphatic amine base having a base strength at least that of benzylamine and a basic inorganic metal oxide, and a polyether polyprimary polyamine having a polyether moiety containing recurring oxyalkylene groups in which the alkylene has from two to six carbon atoms, said polyether polyprimary polyamine having a molecular weight of at least about 3,500.
Claim 3
Dependent Claim
27 words
THe curable elastomeric composition of claim 1 in which said neoprene curing agent comprises an aliphatic amine base having a base strength at least that of benzylamine.
Claim 4
Dependent Claim
25 words
The curable elastomeric composition of claim 1 in which said composition also comprises at least one epoxy compound having an oxirane equivalence greater than 1.
Claim 5
Dependent Claim
27 words
The curable elastomeric composition of claim 1 in which said composition contains at least 25 parts by weight of a reinforcing pigment per 100 parts of neoprene.
Claim 6
Dependent Claim
14 words
The curable elastomeric composition of claim 4 in which said reinforcing pigment is silica.
Claim 7
Dependent Claim
26 words
The curable composition of claim 1 in which the ratio of said polyether polyprimary polyamine to said neoprene is from about 1: 20 to about 10:1.
Claim 8
Dependent Claim
47 words
The curable composition of claim 6 in which the ratio of said polyether polyprimary polyamine to said neoprene is from about 1: 10 to about 2:1 or, when an epoxy compound having an oxirane equivalence greater than 1 is present, from about 1:4 to about 5: 1.
Claim 9
Dependent Claim
27 words
The curable composition of claim 1 in which said polyether polyprimary polyamine is a polyether diprimary diamine having at least 90% of the theoretical primary amino termination.
Claim 10
Dependent Claim
70 words
An abrasion and tear resistant elastomer prepared by curing a mixture comprising neoprene and a polyether polyprimary polyamine having a molecular weight of at least 3,500 and a polyether moiety containing recurring oxyalkylene groups in which the alkylene has from two to six carbon atoms in the presence of at least one aliphatic amine base having a base strength at least that of benzylamine or a basic inorganic metal oxide.
Claim 11
Dependent Claim
70 words
An abrasion and tear resistant elastomer prepared by curing a mixture comprising neoprene and a polyether polyprimary polyamine having a molecular weight of at least 3,500 and a polyether moiety containing recurring oxyalkylene groups in which the alkylene has from two to six carbon atoms in the presence of at least one aliphatic amine base having a base strength at least that of benzylamine or a basic inorganic metal oxide.
Claim 12
Dependent Claim
29 words
The abrasion and tear resistant elastomer of claim 9 in which at least a major portion of the oxyalkylene recurring groups in said polyether polyprimary polyamine are oxytetramethylene groups.
Claim 13
Dependent Claim
25 words
The abrasion and tear resistant elastomer of claim 10 in which said mixture also contains an epoxy compound having an oxirane equivalence greater than one.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |