US4223112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lactam-polyol-polyacyl lactam terpolymers
Assignee: DSM Rim Nylon VOF
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Filing: 1975-03-03
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Granted: 1980-09-16
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Expires: 1995-03-03
Abstract
Abstract Lactam-polyol-polyacyl lactam block terpolymers having both ester linkages and amide linkages between the monomeric segments of the terpolymer are disclosed. Also disclosed is a process for preparing the above block terpolymers comprising reacting together a lactam, polyol and polyacyl lactam in the presence of a basic lactam polymerization catalyst to form a lactam-polyol-polyacyl lactam block terpolymer.
Inventors
- 👤 Ross M. Hedrick
- 👤 James D. Gabbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:43
CPC Classifications
C; C08; C08G; C08G69/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
A lactam-polyol-polyacyl lactam block terpolymer having the general formula: ##STR14## wherein (O--Z) z is a polymeric moiety and Z is a hydrocarbon or substituted hydrocarbon group said group being alkylene, arylene, alkylene carbonyl, arylene carbonyl, and mixtures thereof; A is a carbonyl group; R is a divalent or polyvalent hydrocarbon group comprised of from 1 to 4 carbon atoms; Y is an alkylene or substituted alkylene having from about 3 to about 14 carbon atoms; x, x', x", and x'" are integers with at least one x being an integer greater than one, and the total number of x's is equal to 2w +2; and z is an integer equal to one or more and w is an integer greater than one.
Claim 2
Dependent Claim
122 words
A lactam-polyol-polyacyl lactam block terpolymer having the general formula: ##STR14## wherein (O--Z) z is a polymeric moiety and Z is a hydrocarbon or substituted hydrocarbon group said group being alkylene, arylene, alkylene carbonyl, arylene carbonyl, and mixtures thereof; A is a carbonyl group; R is a divalent or polyvalent hydrocarbon group comprised of from 1 to 4 carbon atoms; Y is an alkylene or substituted alkylene having from about 3 to about 14 carbon atoms; x, x', x", and x'" are integers with at least one x being an integer greater than one, and the total number of x's is equal to 2w +2; and z is an integer equal to one or more and w is an integer greater than one.
Claim 3
Dependent Claim
19 words
The lactam-polyol-polyacyl lactam block terpolymer according to claim 1 wherein the R group is comprised of four carbon atoms.
Claim 4
Dependent Claim
15 words
The lactam-polyol-polyacyl lactam block terpolymer according to claim 2 wherein the R group is tetramethylene.
Claim 5
Dependent Claim
18 words
A terpolymer according to claim 1 wherein the polyol portion of the terpolymer is formed from polybutadiene diol.
Claim 6
Dependent Claim
18 words
A terpolymer according to claim 1 wherein the polyol portion of the terpolymer is formed from a polyester.
Claim 7
Dependent Claim
12 words
A terpolymer according to claim 5 wherein said polyester is polycaprolactone diol.
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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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |