US4294747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shapeable thermoplastic resin composition containing cyclic acetal
Assignee: MILLIKEN RESEARCH Corp A CORP OF SC
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Filing: 1980-08-18
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Granted: 1981-10-13
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Expires: 2000-08-18
Abstract
Abstract A shapeable thermoplastic resin composition is provided which comprises a thermoplastic, condensation polymer or polymer blend substantially free of olefinic unsaturation having an intrinsic viscosity of from about 0.1 to about 5 and from about 0.01 to 2 percent by weight of a cyclic acetal as a nucleating agent.
Inventors
- 👤 Tien-Kuei Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:56
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C08K5/1575
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
A shapeable resin composition which consists essentially of a thermoplastic, condensation polymer substantially free of olefinic unsaturation having an intrinsic viscosity of from about 0.1 to 5 measured at 25° C. in a mixture of equal parts by volume of sym-tetrachloroethane and phenol and an effective minor amount sufficient to improve crystallization properties of a cyclic acetal as a nucleating agent, said cyclic acetal being at least one member selected from the polyhydric alcohol acetals of benzaldehyde or derivatives thereof wherein the benzene ring of said benzaldehyde moiety is substituted with at least one substituent selected from the group consisting of halogen substituents, alkyl groups having one to eight carbon atoms, and alkoxy groups having one to eight carbon atoms, said polyhydric alcohols having 5 to 7 hydroxyl groups.
Claim 2
Dependent Claim
129 words
A shapeable resin composition which consists essentially of a thermoplastic, condensation polymer substantially free of olefinic unsaturation having an intrinsic viscosity of from about 0.1 to 5 measured at 25° C. in a mixture of equal parts by volume of sym-tetrachloroethane and phenol and an effective minor amount sufficient to improve crystallization properties of a cyclic acetal as a nucleating agent, said cyclic acetal being at least one member selected from the polyhydric alcohol acetals of benzaldehyde or derivatives thereof wherein the benzene ring of said benzaldehyde moiety is substituted with at least one substituent selected from the group consisting of halogen substituents, alkyl groups having one to eight carbon atoms, and alkoxy groups having one to eight carbon atoms, said polyhydric alcohols having 5 to 7 hydroxyl groups.
Claim 3
Dependent Claim
17 words
The resin composition of claim 1 wherein said thermoplastic, condensation polymer is a homopolymer of polyethylene terephthalate.
Claim 4
Dependent Claim
22 words
The resin composition of claim 1 wherein said shapeable resin composition further includes an effective minor amount of a thermoplastic resin plasticizer.
Claim 5
Dependent Claim
24 words
The resin composition of claim 1 wherein said thermoplastic, condensation polymer is a copolymer containing at least about 80 percent by weight polyethylene terephthalate.
Claim 6
Dependent Claim
23 words
The resin composition of claim 1 wherein said thermoplastic, condensation polymer is a polyamide made from the self-condensation of 6-amino-caproic acid or caprolactam.
Claim 7
Dependent Claim
24 words
The resin composition of claim 1 wherein said thermoplastic, condensation polymer is a polyester prepared from an aromatic dicarboxylic acid and an alkylene glycol.
Claim 8
Dependent Claim
14 words
The resin composition of claim 1 wherein said thermoplastic, condensation polymer is polybutylene terephthalate.
Claim 9
Dependent Claim
14 words
The resin composition of claim 1, wherein said resin composition further includes a filler.
Claim 10
Dependent Claim
14 words
The resin composition of claim 1 wherein said composition further includes a reinforcing agent.
Claim 11
Dependent Claim
13 words
The resin composition of claim 9, wherein said reinforcing agent is fiber glass.
Claim 12
Dependent Claim
61 words
An injection molding resin composition which comprises polyethylene terephthalate having an intrinsic viscosity of from about 0.4 to 1.5 measured at 25° C. in a mixture of equal parts by volume of sym-tetrachloroethane and phenol; from about 0.1 to 1 percent by weight of dibenzylidene sorbitol as a nucleating agent and from about 10 to 70 percent of a reinforcing agent.
Claim 13
Dependent Claim
61 words
An injection molding resin composition which comprises polyethylene terephthalate having an intrinsic viscosity of from about 0.4 to 1.5 measured at 25° C. in a mixture of equal parts by volume of sym-tetrachloroethane and phenol; from about 0.1 to 1 percent by weight of dibenzylidene sorbitol as a nucleating agent and from about 10 to 70 percent of a reinforcing agent.
Claim 14
Dependent Claim
23 words
The injection molding resin composition of claim 11 wherein said resin composition further includes an effective minor amount of a thermoplastic resin plasticizer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |