US4049611A
Expired / Lapsed
US
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Modified polyester polyblends and preparation thereof
Assignee: Monsanto Co
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Filing: 1975-11-19
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Granted: 1977-09-20
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Expires: 1995-11-19
Abstract
Abstract Polyblends are disclosed comprising terminated polyesters, coupled polyesters derived from partially terminated polyesters and coupled polyesters derived from non-terminated polyesters. The polyblends are prepared by reacting a dicarboxylic acid, a glycol and a monocarboxylic acid or monohydric alcohol under esterification conditions and subsequently treating the reaction mixture with a polyfunctional coupling agent. The polyblends are useful as plasticizers for film-forming vinyl halide polymers.
Inventors
- 👤 John William Hirzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08L; C08L27/00
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
51 words
Polyblend comprising (a) an alcohol terminated polyester, (b) a coupled polyester derived from a partially alcohol terminated polyester, and (c) a coupled polyester derived from a non-terminated polyester, said polyblend having a molecular weight below about 12,000 and containing from about 10 percent to about 40 percent (b) and (c) combined.
Claim 2
Dependent Claim
51 words
Polyblend comprising (a) an alcohol terminated polyester, (b) a coupled polyester derived from a partially alcohol terminated polyester, and (c) a coupled polyester derived from a non-terminated polyester, said polyblend having a molecular weight below about 12,000 and containing from about 10 percent to about 40 percent (b) and (c) combined.
Claim 3
Dependent Claim
51 words
Polyblend of claim 1 wherein said polyester (a) has the formula T--A--G--A--.sub.x T wherein T represents the residue of a monohydric alcohol; A represents the residue of a dicarboxylic acid; G represents the residue of a glycol; and x represents an integer having an average value of from 5 to 15.
Claim 4
Dependent Claim
15 words
Polyblend of claim 2 wherein said monohydric alcohol has from 7 to 11 carbon atoms.
Claim 5
Dependent Claim
9 words
Polyblend of claim 3 wherein said alcohol is 2-ethylhexanol.
Claim 6
Dependent Claim
16 words
Polyblend of claim 3 wherein said alcohol is a mixture of heptyl, nonyl and undecyl alcohols.
Claim 7
Dependent Claim
15 words
Polyblend of claim 2 wherein said glycol has from 2 to about 6 carbon atoms.
Claim 8
Dependent Claim
10 words
Polyblend of claim 6 wherein said glycol is 1,2-propylene glycol.
Claim 9
Dependent Claim
10 words
Polyblend of claim 6 wherein said glycol is 1,3-propylene glycol.
Claim 10
Dependent Claim
15 words
Polyblend of claim 2 wherein said dicarboxylic acid has from 3 to 10 carbon atoms.
Claim 11
Dependent Claim
11 words
Polyblend of claim 9 wherein said dicarboxylic acid is adipic acid.
Claim 12
Dependent Claim
11 words
Polyblend of claim 9 wherein said dicarboxylic acid is azelaic acid.
Claim 13
Dependent Claim
60 words
Polyblend of claim 1 wherein said polyester (b) has the formula T--A--G--A--.sub.x G--Z--G--A--G--.sub.x A--T wherein T represents the residue of a monohydric alcohol; A represents the residue of a dicarboxylic acid; G represents the residue of a glycol; Z represents the residue of a coupling agent; and x represents an integer having an average value of from 5 to 15.
Claim 14
Dependent Claim
15 words
Polyblend of claim 12 wherein said monohydric alcohol has from 7 to 11 carbon atoms.
Claim 15
Dependent Claim
10 words
Polyblend of claim 13 wherein said monohydric alcohol is 2-ethylhexanol.
Claim 16
Dependent Claim
17 words
Polyblend of claim 13 wherein said monohydric alcohol is a mixture of heptyl, nonyl and undecyl alcohols.
Claim 17
Dependent Claim
15 words
Polyblend of claim 12 wherein said dicarboxylic acid has from 3 to 10 carbon atoms.
Claim 18
Dependent Claim
11 words
Polyblend of claim 16 wherein said dicarboxylic acid is adipic acid.
Claim 19
Dependent Claim
11 words
Polyblend of claim 16 wherein said dicarboxylic acid is azelaic acid.
Claim 20
Dependent Claim
15 words
Polyblend of claim 12 wherein said glycol has from 2 to about 6 carbon atoms.
Claim 21
Dependent Claim
10 words
Polyblend of claim 19 wherein said glycol is 1,2-propylene glycol.
Claim 22
Dependent Claim
10 words
Polyblend of claim 19 wherein said glycol is 1,3-butylene glycol.
Claim 23
Dependent Claim
78 words
Polyblend of claim 1 wherein said polyester (c) has the formula [(G--A--.sub.x G--Z].sub.y wherein G represents the residue of a glycol having from 2 to about 6 carbon atoms; A represents the residue of a dicarboxylic acid having from 3 to 10 carbon atoms; Z represents the residue of a coupling agent; x represents an integer having a value of from 5 to 15; and Y represents an integer having a value of from 1 to about 12.
Claim 24
Dependent Claim
86 words
Polyblend comprising a. a polyester of the formula T--A--G--A--.sub.x T, b. a polyester of the formula T--A--G--A--.sub.x G--Z--G--A--G--.sub.x A--T and c. a polyester of the formula [(G--A--.sub.x G--Z].sub.y wherein T represents the residue of a monohydric alcohol; G represents the residue of a glycol; A represents the residue of a dicarboxylic acid; Z represents the residue of a coupling agent; x represents an integer having a value of from 5 to 15; and y represents an integer having a value of from 1 to about 12.
Claim 25
Dependent Claim
86 words
Polyblend comprising a. a polyester of the formula T--A--G--A--.sub.x T, b. a polyester of the formula T--A--G--A--.sub.x G--Z--G--A--G--.sub.x A--T and c. a polyester of the formula [(G--A--.sub.x G--Z].sub.y wherein T represents the residue of a monohydric alcohol; G represents the residue of a glycol; A represents the residue of a dicarboxylic acid; Z represents the residue of a coupling agent; x represents an integer having a value of from 5 to 15; and y represents an integer having a value of from 1 to about 12.
Claim 26
Dependent Claim
28 words
Polyblend of claim 23 wherein said monohydric alcohol is 2-ethylhexanol, said glycol is 1,3-butylene glycol, said dicarboxylic acid is adipic acid and said coupling agent is hexamethylene diisocyanate.
Claim 27
Dependent Claim
16 words
Composition comprising a vinyl halide polymer and a plasticizing amount of the polyblend of claim 2.
Claim 28
Dependent Claim
16 words
Composition comprising a vinyl halide polymer and a plasticizing amount of the polyblend of claim 12.
Claim 29
Dependent Claim
16 words
Composition comprising a vinyl halide polymer and a plasticizing amount of the polyblend of claim 22.
Claim 30
Dependent Claim
16 words
Composition comprising a vinyl halide polymer and a plasticizing amount of the polyblend of claim 24.
Claim 31
Dependent Claim
60 words
Method of in situ preparation of the polyblend of claim 1 which comprises (1) reacting a dicarboxylic acid, an alkylene glycol and a terminator which is a monohydric alcohol under esterification conditions and (2) reacting the reaction mixture of (1) with a polyfunctional coupling agent at a temperature below that temperature at which the properties of said polyblend are degraded.
Claim 32
Dependent Claim
13 words
Method of claim 29 wherein said terminator is a mixture of monohydric alcohols.
Claim 33
Dependent Claim
22 words
Method of claim 29 wherein said coupling agent is selected from the group consisting of a poly(methylene)diisocyanate and a dicarboxylic acid chloride.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |