US4104283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polythioetheralkyleneoxide epoxides
Assignee: Dow Chemical Co
•
Filing: 1971-11-26
•
Granted: 1978-08-01
•
Expires: 1991-11-26
Abstract
Abstract New compounds of the structure ##STR1## WHERE R is an aromatic, alicyclic or aliphatic group of at least 2 C atoms and up to 18 C atoms, x is an integer from 1 to 9, R' is H, a lower alkyl grup of 1-4 C atoms or --CH 2 Cl, y is an integer of from 0-10 and z is an integer of from 2 to 6 are prepared by reacting a polythioetherpolythiol with an olefinically unsaturated epoxide or by dehydrohalogenating the corresponding halohydrins. The new compounds are useful as diluents for epoxy resins to reduce their viscosity and to improve flexibility of the cured resins.
Inventors
- 👤 Richard A. Hickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:21
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; C07D303/24; C08; C08G; C08G59/00; C08G59/02; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/302
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
127 words
Compounds of the structure ##STR12## wherein x is an integer from 1 to 9, R' is H, an alkyl group of from 1 to 4 C atoms or CH 2 Cl, y is an integer from 0 to 10, z is an integer from 2 to 3 and R is --(CH 2 ) 2 O(CH 2 ) 2 , --(CH 2 ) 3 O(CH 2 ) 3 --, --(CH 2 ) 2 S(CH 2 ) 2 --, --(CH 2 ) 2 S(CH 2 ) 2 S(CH 2 ) 2 --, --(CH 2 ) 2 S(CH 2 ) 2 O(CH 2 ) 2 S(CH 2 ) 2 --, ##STR13## the reaction product of a polyallyl ether of penterythritol having an average of about 3.5 allyl groups and 1,2-ethanedithiol.
Claim 2
Dependent Claim
127 words
Compounds of the structure ##STR12## wherein x is an integer from 1 to 9, R' is H, an alkyl group of from 1 to 4 C atoms or CH 2 Cl, y is an integer from 0 to 10, z is an integer from 2 to 3 and R is --(CH 2 ) 2 O(CH 2 ) 2 , --(CH 2 ) 3 O(CH 2 ) 3 --, --(CH 2 ) 2 S(CH 2 ) 2 --, --(CH 2 ) 2 S(CH 2 ) 2 S(CH 2 ) 2 --, --(CH 2 ) 2 S(CH 2 ) 2 O(CH 2 ) 2 S(CH 2 ) 2 --, ##STR13## the reaction product of a polyallyl ether of penterythritol having an average of about 3.5 allyl groups and 1,2-ethanedithiol.
Claim 3
Dependent Claim
21 words
Compounds of claim 1 in which R is ##STR14## , x is 1 and y is 0 and z is 3.
Claim 4
Dependent Claim
9 words
Compounds of claim 1 in which R is ##STR15##
Claim 5
Dependent Claim
9 words
Compounds of claim 1 in which R is ##STR16##
Claim 6
Dependent Claim
9 words
Compounds of claim 1 in which R is ##STR17##
Claim 7
Dependent Claim
9 words
Compounds of claim 1 in which R is ##STR18##
Claim 8
Dependent Claim
17 words
Compounds of claim 1 in which R is --(CH 2 ) 2 S(CH 2 ) 2 --.
Claim 9
Dependent Claim
13 words
Compounds of claim 3 in which x is 1 and y is 0.
Claim 10
Dependent Claim
13 words
Compounds of claim 4 in which x is 1 and y is 0.
Claim 11
Dependent Claim
13 words
Compounds of claim 5 in which x is 1 and y is 0.
Claim 12
Dependent Claim
13 words
Compounds of claim 6 in which x is 1 and y is 0.
Claim 13
Dependent Claim
16 words
Compounds of claim 3 in which x is 1, R' is H and y is 0.
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) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |