Patent US5101002A successfully refreshed from Google Patents.
US5101002A
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Cured phosphonitrilic elastomers having alkyl-substituted aryl units
Assignee: Albemarle Corp
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Filing: 1990-09-24
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Granted: 1992-03-31
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Expires: 2010-09-24
Abstract
Abstract Phosphazene polymers having the units <IMAGE> <IMAGE> wherein the total number of units ranges from about 3 to about 50,000, R1 and R2 are different and are C1 to C12 linear or branched alkyl, C2 to C15 linear or branched fluoroalkyl or mixtures thereof, and R3 is phenyl substituted with C1 to C12 linear or branched alkyl. The polymers can be cured with peroxides to yield cross-linked materials having enhanced elongation.
Inventors
- 👤 W. Dirk Klobucar
- 👤 David M. Indyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:35
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
A curable, linear phosphazene polymer having the units ##STR4## where the total number of units ranges from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl.
Claim 2
Dependent Claim
68 words
A curable, linear phosphazene polymer having the units ##STR4## where the total number of units ranges from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl.
Claim 3
Dependent Claim
41 words
The polymer according to claim 1 wherein R 1 and R 2 are fluoroalkyl of the formulae CF 3 CH 2 -- and CF 2 H(CF 2 ) n (CH 2 )-- where n is an integer from 1 to 13.
Claim 4
Dependent Claim
22 words
The polymer according to claim 2 wherein R 3 is phenyl substituted with C 1 to C 6 linear or branched alkyl.
Claim 5
Dependent Claim
20 words
The polymer according to claim 3 wherein R 3 is phenyl substituted with p-methyl, p-ethyl, m-methyl, m-ethyl, o-methyl or o-ethyl.
Claim 6
Dependent Claim
21 words
The polymer of claim 1 wherein R 1 and R 2 are C 1 to C 6 linear or branched alkyl.
Claim 7
Dependent Claim
22 words
The polymer according to claim 5 wherein R 3 is phenyl substituted with C 1 to C 6 linear or branched alkyl.
Claim 8
Dependent Claim
94 words
A process for curing a linear phosphazene polymer, having the units ##STR5## where the total number of units ranges from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl, which comprises heating said polymer within the range from about 100° C. to about 200° C. in the presence of peroxide curing agent.
Claim 9
Dependent Claim
94 words
A process for curing a linear phosphazene polymer, having the units ##STR5## where the total number of units ranges from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl, which comprises heating said polymer within the range from about 100° C. to about 200° C. in the presence of peroxide curing agent.
Claim 10
Dependent Claim
104 words
A cured polyphosphazene prepared by the process of heating a curable linear phosphazene polymer having the units ##STR6## where the total number of units range from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl, prepared by the process which comprises heating said polymer within the range from about 100° C. to about 200° C. in the presence of peroxide curing agent.
Claim 11
Dependent Claim
104 words
A cured polyphosphazene prepared by the process of heating a curable linear phosphazene polymer having the units ##STR6## where the total number of units range from about 3 to about 50,000, R 1 and R 2 are different and are C 1 to C 12 linear or branched alkyl, C 2 to C 15 linear or branched fluoroalkyl or mixtures thereof, and R 3 is phenyl substituted with C 1 to C 12 linear or branched alkyl, prepared by the process which comprises heating said polymer within the range from about 100° C. to about 200° C. in the presence of peroxide curing agent.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |