US4397979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer composition containing lithium, manganese or zirconium nucleating agent
Assignee: Honeywell International Inc
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Filing: 1981-08-03
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Granted: 1983-08-09
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Expires: 2001-08-03
Abstract
Abstract A polymer composition having improved physical properties, and a method of preparing same.
Inventors
- 👤 Herbert K. Reimschuessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:10
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16; C08K3/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A composition comprising: (A) a polymer selected from the group consisting of polymers having one or more carbonyl functions as an integral part of the recurring unit and polymer backbone and mixtures thereof; and (B) a nucleation agent selected from the group consisting of lithium metasilicate, lithium aluminate, lithium metaphosphate, manganese fluoride, zirconium tetra fluoride, zirconium silicate and mixtures thereof in an amount such that the difference (ΔT c ) m between melting point (T m ) and temperature at which crystallization is first observed upon cooling from the melt (T c ) of said composition is at least 1° C. less than the (ΔT c ) m of said polymer.
Claim 2
Dependent Claim
111 words
A composition comprising: (A) a polymer selected from the group consisting of polymers having one or more carbonyl functions as an integral part of the recurring unit and polymer backbone and mixtures thereof; and (B) a nucleation agent selected from the group consisting of lithium metasilicate, lithium aluminate, lithium metaphosphate, manganese fluoride, zirconium tetra fluoride, zirconium silicate and mixtures thereof in an amount such that the difference (ΔT c ) m between melting point (T m ) and temperature at which crystallization is first observed upon cooling from the melt (T c ) of said composition is at least 1° C. less than the (ΔT c ) m of said polymer.
Claim 3
Dependent Claim
21 words
A composition according to claim 1 wherein said polymer is selected from the group consisting of polyester, polyamides and mixtures thereof.
Claim 4
Dependent Claim
12 words
A composition according to claim 1 wherein said agent is zirconium tetra-fluoride.
Claim 5
Dependent Claim
12 words
A composition according to claim 3 wherein said polymer is a polyamide.
Claim 6
Dependent Claim
11 words
A composition according to claim 4 wherein said polyamide is polycaprolactam.
Claim 7
Dependent Claim
30 words
A composition according to claim 3, 4 or 5 comprising from about 0.01 to about 20 weight percent of said nucleation agent, based on the total weight of said composition.
Claim 8
Dependent Claim
22 words
A composition according to claim 6 wherein the amount of said nucleation agent is from about 0.1 to about 15 weight percent.
Claim 9
Dependent Claim
23 words
A composition according to claim 6 wherein the weight percent of said nucleation agent is from about 1 to about 5 weight percent.
Claim 10
Dependent Claim
98 words
A composition comprising: (A) a polymer selected from the group consisting of polymers having one or more carbonyl functions as an integral part of the recurring unit and mixtures thereof; and (B) zirconium tetrafluoride in an amount such that the difference (ΔT c ) m between melting point (T m ) and temperature at which crystallization is first observed upon cooling from the melt of said composition is at least 1° C. less than the (ΔT c ) m of said polymer, and such that the modulus of said composition is greater than the modulus of said polymer.
Claim 11
Dependent Claim
98 words
A composition comprising: (A) a polymer selected from the group consisting of polymers having one or more carbonyl functions as an integral part of the recurring unit and mixtures thereof; and (B) zirconium tetrafluoride in an amount such that the difference (ΔT c ) m between melting point (T m ) and temperature at which crystallization is first observed upon cooling from the melt of said composition is at least 1° C. less than the (ΔT c ) m of said polymer, and such that the modulus of said composition is greater than the modulus of said polymer.
References Cited (Backward Citations)
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Cited
CA866252A
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US3329715A
Cited
GB1211685A
Cited
US3591565A
Cited
US3624041A
Cited
US4167614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |