US4365036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast crystallizing polyalkyleneterephthalate resin compositions
Assignee: Plastics Engineering Co
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Filing: 1981-12-15
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Granted: 1982-12-21
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Expires: 2001-12-15
Abstract
Abstract The fast crystallizing polyalkyleneterephthalate resin compositions disclosed herein contain 0.025-2 percent by weight of NaI in the form of a selected complex of sodium iodide (NaI) and an organic compound, such as a polymeric compound, which contains at least two recurring units of the formula --CH 2 CH 2 O-- together with reinforcing agents, fillers and/or additives and optionally a flow promoter selected from low molecular weight organic esters or block copolymers containing a recurring structure of [(CH 2 ) x O--] m wherein x is an integer of no more than 5 and m is an integer ranging from 2, preferably from 200 to about 5,000. The amount of complex is such as to give 0.025-2 percent, preferably 1-2 percent by weight of NaI based on the weight of polyalkyleneterephthalate.
Inventors
- 👤 Chung J. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K3/00; C08K3/16; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C08L67/00; C08L67/02; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
67 words
A fast crystallizing molding composition comprising essentially: a. a polyalkyleneterephthalate in which the alkylene group has 2-4 carbon atoms; b. a complex of NaI and a polymeric compound having at least two recurring units having the formula --CH 2 CH 2 O--, the amount of said complex being enough to give a proportion of 0.025-2 percent by weight of NaI based on the weight of said polyalkyleneterephthalate.
Claim 2
Dependent Claim
67 words
A fast crystallizing molding composition comprising essentially: a. a polyalkyleneterephthalate in which the alkylene group has 2-4 carbon atoms; b. a complex of NaI and a polymeric compound having at least two recurring units having the formula --CH 2 CH 2 O--, the amount of said complex being enough to give a proportion of 0.025-2 percent by weight of NaI based on the weight of said polyalkyleneterephthalate.
Claim 3
Dependent Claim
40 words
The composition of claim 1, in which there is 5-60 percent by weight of at least one modifier selected from the class consisting of reinforcing and filling materials, said weight percentage being based on the total weight of the composition.
Claim 4
Dependent Claim
35 words
The composition of claim 2, wherein component (a) is polyethyleneterephthalate having an intrinsic viscosity of at least 0.4 dl/g as measured on a 2:3 by weight mixture respectively of phenol and tetrachloroethane at 25° C.
Claim 5
Dependent Claim
27 words
The composition of claim 2, wherein component (a) is polybutyleneterephthalate having an intrinsic viscosity of at least 0.5 as measured on an o-chlorophenol solution at 25° C.
Claim 6
Dependent Claim
26 words
The composition of claim 2, wherein in component (a) the polyalkyleneterephthalate is a block copolymer containing at least 30% by weight of the polyalkyleneterephthalate recurring units.
Claim 7
Dependent Claim
16 words
The composition of claim 2, wherein component (a) is a block copolymer at least 30% polyethyleneterephthalate.
Claim 8
Dependent Claim
17 words
The composition of claim 2, wherein component (a) is a block copolymer having at least 50% polybutyleneterephthalate.
Claim 9
Dependent Claim
28 words
The composition of any one of the claims 1 to 7, wherein the polymeric compound of component (b) has an average molecular weight from about 200 to 16,000,000.
Claim 10
Dependent Claim
25 words
The composition of any one of claims 1 to 7, wherein the polymeric compound of component (b) has at least 20 of said recurring units.
Claim 11
Dependent Claim
34 words
The composition of any one of claims 1 to 7 wherein the amount of said NaI complex is sufficient to give 0.1-2 percent by weight of NaI based on the weight of said polyalkyleneterephthalate.
Claim 12
Dependent Claim
42 words
The composition of any one of claims 1 to 7, wherein there is 0.5 to 60 percent by weight of a reinforcing material selected from the group consisting of glass fibers, glass beads, graphite, carbon fibers, mica, wollastonite and polyaromatic amide fibers.
Claim 13
Dependent Claim
31 words
The composition of any one of claims 1 to 7, wherein there is 0.5 to 60 percent by weight of a modifier selected from the group consisting of paraffin and polytetraflouroethylene.
Claim 14
Dependent Claim
53 words
The composition of any one of claims 1 to 7, wherein there is 0.5 to 3 percent by weight of a plasticizer selected from the group consisting of a block copolyester ether, dibenzoate of neopentyl glycol, dibenzoate of dipropylene glycol and a monoester of a fatty acid containing 0 to 32 carbon atoms.
Claim 15
Dependent Claim
34 words
The composition of any one of claims 1 to 7, wherein the amount of said NaI complex is sufficient to give 0.1-1 percent by weight of NaI based on the weight of said polyalkyleneterephthalate.
Claim 16
Dependent Claim
26 words
The product obtained by molding at a mold temperature of 25° to 200° C. a composition as claimed in any one of claims 1 to 7.
Claim 17
Dependent Claim
26 words
The product obtained by molding a composition as claimed in any one of claims 3 and 6 at a mold temperature of 90° to 200° C.
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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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |