US4006068A
Expired / Lapsed
US
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Polymercaptoesters of polyglycidols
Assignee: Dow Chemical Co
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Filing: 1975-04-30
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Granted: 1977-02-01
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Expires: 1995-04-30
Abstract
Abstract Polymercaptocarboxylic esters of polyglycidols comprising units represented by the formula ##STR1## are disclosed as well as a method for utilizing the same to prepare cross-linked polymeric compositions.
Inventors
- 👤 Violete L. Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:31
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/06; C08G; C08G75/00; C08G75/12; C08G59/00; C08G59/18; C08G59/40; C08G59/66; C08G59/68; C08G59/687; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/334; C08G65/3342; C08G65/3344; C08G75/02; C08G75/04; C09; C09D; C09D181/00; C09D181/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
92 words
A condensation polymer comprising at least one unit represented by the formula ##STR13## wherein R is independently in each unit the residue of a ring-opened alkylene oxide moiety; R' is independently in each unit a divalent C 1 -C 20 hydrocarbon residue of a mercaptocarboxylic acid; and x is independently in each unit zero or a positive integer up to about 100, provided that when said condensation polymer comprises only one unit represented by formula (I) it additionally comprises at least two units of a ring-opened alkylene oxide and x is zero.
Claim 2
Dependent Claim
92 words
A condensation polymer comprising at least one unit represented by the formula ##STR13## wherein R is independently in each unit the residue of a ring-opened alkylene oxide moiety; R' is independently in each unit a divalent C 1 -C 20 hydrocarbon residue of a mercaptocarboxylic acid; and x is independently in each unit zero or a positive integer up to about 100, provided that when said condensation polymer comprises only one unit represented by formula (I) it additionally comprises at least two units of a ring-opened alkylene oxide and x is zero.
Claim 3
Dependent Claim
13 words
A polymer of claim 1 consisting essentially of units represented by formula (I).
Claim 4
Dependent Claim
44 words
A polymer described in claim 1 which further comprises at least one ring-opened comonomer selected from the group of alkylene oxides consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, epichlorohydrin, epibromohydrin, glycidol, n-butyl glycidyl ether, phenyl glycidyl ether, styrene oxide, and tetrahydrofuran.
Claim 5
Dependent Claim
16 words
A polymer described in claim 1 wherein x is independently in each unit zero to 10.
Claim 6
Dependent Claim
16 words
A polymer described in claim 1 wherein R' is --CH 2 CH 2 -- or ##STR14##
Claim 7
Dependent Claim
12 words
A polymer described in claim 1 wherein R' is --CH 2 --.
Claim 8
Dependent Claim
10 words
A polymer described in claim 6 wherein x is zero.
Claim 9
Dependent Claim
44 words
A polymer described in claim 7 which further comprises at least one ring-opened comonomer selected from the group of alkylene oxides consisting of ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, epichlorohydrin, epibromohydrin, glycidol, n-butyl glycidyl ether, phenyl glycidyl ether, styrene oxide, and tetrahydrofuran.
Claim 10
Dependent Claim
13 words
A polymer of claim 7 consisting essentially of units represented by formula ##STR15##
Claim 11
Dependent Claim
20 words
A polymer described in claim 7 which has a weight average molecular weight of from about 314 to about 20,000.
Claim 12
Dependent Claim
39 words
A polymer of claim 7 having a weight average molecular weight of about 698, containing about 4.77 mercapto groups per molecule, which consists essentially of units represented by formula (I) and ring-opened ethylene oxide units in about equimolar proportions.
Claim 13
Dependent Claim
15 words
A polymer described in claim 1 comprising at least two units represented by formula (I).
Claim 14
Dependent Claim
34 words
A polymer described in claim 12 represented by the formula ##STR16## wherein Z is independently, each occurrence, hydrogen, alkyl or ##STR17## and one of a and b is zero and the other is one.
Claim 15
Dependent Claim
12 words
The polymer described in claim 13 wherein --R'-- is --CH 2 --.
Claim 16
Dependent Claim
15 words
A polymer described in claim 13 wherein all Z's are represented by one of ##STR18##
Claim 17
Dependent Claim
35 words
A mixture comprising a polymer described in claim 12 and at least one composition, selected from polyoxiranes and polyethylenically unsaturated materials, which is curable by the mercapto groups of said polymer to a tack-free film.
Claim 18
Dependent Claim
22 words
A curable mixture comprising a polymer described in claim 12, a polyethylenically unsaturated compound and a sensitizer and/or initiator for said compound.
Claim 19
Dependent Claim
22 words
A method of preparing a cross-linked polymeric material comprising subjecting the mixture of claim 17 to ultraviolet radiation sufficient to induce curing.
Claim 20
Dependent Claim
23 words
A method of preparing a cross-linked polymeric material comprising subjecting the mixture of claim 17 to electron beam radiation sufficient to induce curing.
Claim 21
Dependent Claim
14 words
A curable mixture comprising a polymer described in claim 12 and a polyoxirane compound.
Claim 22
Dependent Claim
22 words
A method of preparing a cross-linked polymeric material comprising exposing the mixture of claim 20 to thermal energy sufficient to induce curing.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |