Patent US4451606A successfully refreshed from Google Patents.
US4451606A
Expired / Lapsed
US
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Copolymeric nucleating agent for polyester
Assignee: General Electric Co
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Filing: 1983-02-23
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Granted: 1984-05-29
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Expires: 2003-02-23
Abstract
Abstract Novel nucleating agents have been discovered which are effective in polyesters, especially poly(ethylene terephthalate). The novel nucleating agents are copolymers derived from a poly(alkylene terephthalate) and a sulfonate salt. Also provided by this invention are a process for nucleating polyesters, particularly poly(alkylene terephthalates), especially poly(ethylene terephthalate) and the compositions so produced.
Inventors
- 👤 Richard W. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:51
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
44 words
A method for effecting, promoting and hastening the crystallization of thermoplastic polyester compositions which comprises admixing an effective, nucleating amount of a nucleating copolymer of a poly(alkylene terephthalate) and a sulfonate salt of an aromatic dicarboxylic acid or derivative thereof with a thermoplastic polyester.
Claim 2
Independent Claim
44 words
A method for effecting, promoting and hastening the crystallization of thermoplastic polyester compositions which comprises admixing an effective, nucleating amount of a nucleating copolymer of a poly(alkylene terephthalate) and a sulfonate salt of an aromatic dicarboxylic acid or derivative thereof with a thermoplastic polyester.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the thermoplastic polyester composition is selected from the group consisting of poly(ethylene terephthalate), poly(1,4-butylene terephthalate), and copolyesters thereof, or any combination of these.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein the thermoplastic polyester is poly(ethylene terephthalate).
Claim 5
Dependent Claim
84 words
The method of claim 1 wherein the nucleating copolymer is the reaction product of at least one aromatic dicarboxylic acid or dialkyl ester thereof; at least one sulfonate salt derived from compounds selected from the group consisting of sulfoisophthalic acids, dialkyl sulfoisophthalates, sulfoterephthalic acids, dialkyl sulfoterephthalates, sulfonaphthalene dicarboxylic acids and derivatives thereof; at least one diol suitable for the production of a polyester copolymer product; and an amount of catalyst effective for providing a copolymer of a poly(alkyl terephthalate) and said selected sulfonate salt.
Claim 6
Dependent Claim
22 words
The method of claim 4 wherein the nucleating copolymer is the reaction product of dimethyl terephthalate, sodium dimethyl 5-isophthalate and 1,4 butanediol.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the thermoplastic polyester composition is reinforced with a reinforcing amount of fibrous glass.
Claim 8
Dependent Claim
36 words
A nucleated thermoplastic polyester composition comprising (i) a poly(alkylene terephthalate) resin admixed with (ii) an effective nucleating amount of a nucleating copolymer derived from a poly(alkylene terephthalate) and a sulfonate salt of an aromatic dicarboxylic acid.
Claim 9
Dependent Claim
36 words
A nucleated thermoplastic polyester composition comprising (i) a poly(alkylene terephthalate) resin admixed with (ii) an effective nucleating amount of a nucleating copolymer derived from a poly(alkylene terephthalate) and a sulfonate salt of an aromatic dicarboxylic acid.
Claim 10
Dependent Claim
29 words
The composition of claim 7 wherein the poly(alkylene terephthalate) resin (i) is selected from the group consisting of poly(ethylene terephthalate), poly(1,4-butylene terephthalate), copolyesters thereof, or any combination of these.
Claim 11
Dependent Claim
14 words
The composition of claim 8 wherein the poly(alkylene terephthalate) resin (i) is poly(ethylene terephthalate).
Claim 12
Dependent Claim
20 words
The composition of claim 8 wherein the poly(alkylene terephthalate) resin (i) is a blend of poly(ethylene terephthalate) and poly(1,4-butylene terephthalate).
Claim 13
Dependent Claim
14 words
The composition of claim 8 wherein the poly(alkylene terephthalate) resin (i) is poly(1,4-butylene terephthalate).
Claim 14
Dependent Claim
90 words
The composition of claim 7 wherein the nucleating copolymer (ii) is the reaction product of: (a) at least one aromatic dicarboxylic acid or dialkyl derivative thereof; (b) at least one sulfonate salt derived from the compounds selected from the group consisting of sulfoterephthalic acids, sulfoisophthalic acids, dialkyl sulfoisophthalates, dialkyl sulfoterephtalates, sulfonaphthalene dicarboxylic acid and derivatives thereof; (c) at least one alkyl diol suitable for the production of a polyester copolymer product; and, (d) an amount of catalyst effective for providing a copolymer of poly(alkylene terephthalate) and said selected sulfonate salt.
Claim 15
Dependent Claim
25 words
A composition as in claim 12 wherein said dialkyl ester (a) is selected from the group consisting of dimethyl terephthalate, dimethyl isophthalate and mixtures thereof.
Claim 16
Dependent Claim
13 words
The composition of claim 13 wherein the dialkyl ester (a) is dimethyl terephthalate.
Claim 17
Dependent Claim
14 words
The composition as in claim 12 wherein the sulfonate salt (b) is sodium dimethyl-5-sulfoisopthalate.
Claim 18
Dependent Claim
25 words
The composition as in claim 12 wherein the alkyl diol (c) is selected from the group consisting of ethylene glycol, 1,4-butanediol, 1,6-hexanediol, and mixtures thereof.
Claim 19
Dependent Claim
13 words
The composition of claim 16 wherein the alkyl diol (c) is 1,4 butanediol.
Claim 20
Dependent Claim
12 words
The composition of claim 12 wherein the catalyst (d) is tetra(2-ethyl hexyl)titanate.
Claim 21
Dependent Claim
39 words
The composition of claim 7 wherein the nucleating copolymer is the reaction product of: (i) dimethyl terephthalate; (ii) sodium dimethyl-5-sulfoisophthalate; (iii) 1,4-butanediol; and, (iv) sufficient catalyst to provide a copolymer of poly(1,4-butylene tere-phthalate) and the sodium salt of 5-sulfoisophthalate.
Claim 22
Dependent Claim
11 words
The composition of claim 19 wherein the catalyst is tetra(2-ethyl hexyl)titanate.
Claim 23
Dependent Claim
26 words
The composition of claim 7 comprising 100 parts by weight poly(alkylene terephthalate) resin (i) and 0.025 to 100 parts by weight of said nucleating copolymer (ii).
Claim 24
Dependent Claim
26 words
The composition of claim 7 comprising 100 parts by weight poly(alkylene terephthalate) resin (i) and 0.05 to 50 parts by weight of said nucleating copolymer (ii).
Claim 25
Dependent Claim
26 words
The composition of claim 7 comprising 100 parts by weight poly(alkylene terephthalate) resin (i) and 0.05 to 4.0 parts by weight of said nucleating copolymer (ii).
Claim 26
Dependent Claim
14 words
The composition of claim 7 further comprising a reinforcing amount of a reinforcing agent.
Claim 27
Dependent Claim
25 words
The composition of claim 7 wherein the reinforcing agent is selected from the group consisting of fibrous glass, talc, mica, clay or any combination thereof.
Claim 28
Dependent Claim
12 words
The composition of claim 23 wherein the reinforcing agent is fibrous glass.
Claim 29
Dependent Claim
12 words
The composition of claim 7 further comprising an effective amount of plasticizer.
Claim 30
Dependent Claim
12 words
The composition of claim 27 wherein the plasticizer is neopentyl glycol bisbenzoate.
Claim 31
Dependent Claim
22 words
A thermoplastic polyester composition comprising (i) poly(ethylene terephthalate); and, (ii) a nucleating amount of a copolymer of poly(1,4-butylene terephthalate) and sodium dimethyl-5-sulfoisophthalate.
Claim 32
Dependent Claim
22 words
A thermoplastic polyester composition comprising (i) poly(ethylene terephthalate); and, (ii) a nucleating amount of a copolymer of poly(1,4-butylene terephthalate) and sodium dimethyl-5-sulfoisophthalate.
Claim 33
Dependent Claim
26 words
The composition of claim 29 comprising 100 parts by weight poly(alkylene terephthalate) resin (i) and 0.025 to 100 parts by weight of said nucleating copolymer (ii).
Claim 34
Dependent Claim
26 words
The composition of claim 29 comprising 100 parts by weight poly(alkylene terephthalate) resin (ii) and 0.05 to 50 parts by weight of said nucleating copolymer (ii).
Claim 35
Dependent Claim
26 words
The composition of claim 29 comprising 100 parts by weight poly(alkylene terephthalate) resin (i) and 0.05 to 4.0 parts by weight of said nucleating copolymer (ii).
Claim 36
Dependent Claim
15 words
A composition as in claim 29 further comprising a reinforcing amount of a reinforcing agent.
Claim 37
Dependent Claim
25 words
The composition of claim 33 wherein the reinforcing agent is selected from the group consisting of fibrous glass, mica, talc, clay or any combination thereof.
Claim 38
Dependent Claim
12 words
The composition of claim 29 further comprising an effective amount of plasticizer.
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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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |