Patent US4721769A successfully refreshed from Google Patents.
US4721769A
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Diacetylene segmented copolymers
Assignee: Verizon Laboratories Inc
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Filing: 1986-05-27
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Granted: 1988-01-26
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Expires: 2006-05-27
Abstract
Abstract Diacetylene segmented copolymers having first and second segments are disclosed. The preferred segmented copolymers of this invention are prepared from three basic monomers: a diisocyanate, a flexible elastomeric prepolymer and a chain extender containing a diacetylene unit. The resultant segmented copolymers exhibit the mechanical properties of elastomers and also many of the novel characteristics of the polydiacetylenes. Also for the first time, a polydiacetylene has been produced which exhibits mechanochromism.
Inventors
- 👤 Michael F. Rubner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/679
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
31 words
A segmented copolymer comprising first and second segments, said first segment containing at least one diacetylene unit and said second segment being a low molecular weight polymer containing no diacetylene units.
Claim 2
Dependent Claim
31 words
A segmented copolymer comprising first and second segments, said first segment containing at least one diacetylene unit and said second segment being a low molecular weight polymer containing no diacetylene units.
Claim 3
Dependent Claim
22 words
A segmented copolymer of claim 1, wherein said second segment is incompatible with said first segment thereby forming a two-phase domain morphology.
Claim 4
Dependent Claim
14 words
A segmented copolymer of claim 2, wherein said second segment is a soft-flexible segment.
Claim 5
Dependent Claim
12 words
A segmented copolymer of claim 3, wherein said second segment is elastomeric.
Claim 6
Dependent Claim
17 words
A segmented copolymer of claim 4, wherein said first and second segments are linked by urethane linkages.
Claim 7
Dependent Claim
17 words
A segmented copolymer of claim 4, wherein said first and second segments are linked by ester linkages.
Claim 8
Dependent Claim
17 words
A segmented copolymer of claim 4, wherein said first and second segments are linked by amide linkages.
Claim 9
Dependent Claim
33 words
A segmented copolymer as recited in claim 2 having the formula: ##STR3## wherein R is selected from the group consisting of ##STR4## and --(CH 2 ) 6 --, and n=1, n=4 or n=9.
Claim 10
Dependent Claim
10 words
A segmented copolymer of claim 8 having cross-polymerized diacetylene units.
Claim 11
Dependent Claim
12 words
A segmented copolymer as recited in claim 2 having the formula: ##STR5##
Claim 12
Dependent Claim
14 words
A segmented copolymer of claim 10 having diacetylene units cross-polymerized to provide thermochromic properties.
Claim 13
Dependent Claim
16 words
A segmented copolymer as recited in claim 2 having the formula: ##STR6## wherein n=1 or n=4.
Claim 14
Dependent Claim
14 words
A segmented copolymer of claim 12 having diacetylene units cross-polymerized to provide mechanochromic properties.
Claim 15
Dependent Claim
13 words
A segmented copolymer as recited in claim 2 having the following formula: ##STR7##
Claim 16
Dependent Claim
13 words
A segmented copolymer as recited in claim 2 having the following formula: ##STR8##
Claim 17
Dependent Claim
14 words
A segmented copolymer of claim 15 having diacetylene units cross-polymerized to provide thermochromic properties.
Claim 18
Dependent Claim
13 words
A segmented copolymer as recited in claim 2 having the following formula: ##STR9##
Claim 19
Dependent Claim
14 words
A segmented copolymer of claim 17 having diacetylene units cross-polymerized to provide thermochromic properties.
Claim 20
Dependent Claim
13 words
A segmented copolymer as recited in claim 2 having the following formula: ##STR10##
Claim 21
Dependent Claim
14 words
A segmented copolymer of claim 19 having diacetylene units cross-polymerized to provide thermochromic properties.
Claim 22
Dependent Claim
13 words
A segmented copolymer as recited in claim 2 having the following formula: ##STR11##
Claim 23
Dependent Claim
8 words
A mechanochromic segmented copolymer containing cross-polymerized diacetylene units.
Claim 24
Dependent Claim
8 words
A mechanochromic segmented copolymer containing cross-polymerized diacetylene units.
Claim 25
Dependent Claim
8 words
A thermochromic segmented copolymer containing cross-polymerized diacetylene units.
Claim 26
Dependent Claim
8 words
A thermochromic segmented copolymer containing cross-polymerized diacetylene units.
Claim 27
Dependent Claim
27 words
An improved method of detecting temperature utilizing a fiber optic system, wherein the improvement comprises: using a segmented copolymer containing cross-polymerized diacetylene units in the temperature sensor.
Claim 28
Dependent Claim
27 words
An improved method of detecting temperature utilizing a fiber optic system, wherein the improvement comprises: using a segmented copolymer containing cross-polymerized diacetylene units in the temperature sensor.
Claim 29
Dependent Claim
23 words
An improved method of detecting temperature as recited in claim 24, wherein the segmented copolymer is HDI 5,7-PTMO-1000 which contains cross-polymerized diacetylene units.
Claim 30
Dependent Claim
17 words
A segmented copolymer of claims 1, 2, 3, 4, 5, 6 or 7 having crossed-polymerized diactylene units.
References Cited (Backward Citations)
US4215208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |