Patent US6207783B1 successfully refreshed from Google Patents.
US6207783B1
Expired / Lapsed
US
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Silicone oligomers with higher alkoxy groups
Assignee: General Electric Co
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Filing: 1999-05-18
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Granted: 2001-03-27
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Expires: 2019-05-18
Abstract
Abstract An oligomer of the formula:whereineach R is selected individually from the group consisting of R1, -OR2 and -OR3;each R1 is independently a substituted or unsubstituted hydrocarbon group; eachR2 is a C1-C6 alkyl group or an acyl group; and each R3 is a independently an alkyl or alkenyl group having at least 8 carbon atoms;with the provisos thatif R3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the -OR3 group; at least one R group is -OR3; at least one quarter of all R groups are -OR2 or -OR3; m=2 to 20; n=0 to 50; o=0 to 20; and p=0 to 10.The oligomer is a useful component of in insulation formulations for wire and cable used in underground locations.
Inventors
- 👤 Herbert E. Petty
- 👤 Robert Pickwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:21
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/485; C08F; C08F290/00; C08F290/08; C08F290/14; C08F290/148; C08G77/04; C08G77/045; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5425
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
An oligomer of the formula: [R 3 SiO 1/2 ] m [O 1/2 SiR 2 O 1/2 ] n [SiO 3/2 R] o [SiO 4/2 ] p (I) wherein each R is selected individually from the group consisting of R 1 , —OR 2 and —OR 3 ; at least one R 1 is a group of the formula —A—W wherein W is a silyl group and A is a group the respective ends of which are bound by Si—C bonds to the group W and to a silicon atom of the oligomer of formula I; each R 2 is a C 1-6 alkyl group or an acyl group; and each R 3 is independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that is R 3 is alkenyl, there is no unsaturation within the two carbons adjacent to the oxygen atom of the —OR 3 group; at least one R group is —OR 3 ; at least one quarter of all R groups are —OR 2 or —OR 3 ; m is 2 to 20; n is 0 to 50; o is 0 to 20; and p is 0 to 10.
Claim 2
Dependent Claim
198 words
An oligomer of the formula: [R 3 SiO 1/2 ] m [O 1/2 SiR 2 O 1/2 ] n [SiO 3/2 R] o [SiO 4/2 ] p (I) wherein each R is selected individually from the group consisting of R 1 , —OR 2 and —OR 3 ; at least one R 1 is a group of the formula —A—W wherein W is a silyl group and A is a group the respective ends of which are bound by Si—C bonds to the group W and to a silicon atom of the oligomer of formula I; each R 2 is a C 1-6 alkyl group or an acyl group; and each R 3 is independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that is R 3 is alkenyl, there is no unsaturation within the two carbons adjacent to the oxygen atom of the —OR 3 group; at least one R group is —OR 3 ; at least one quarter of all R groups are —OR 2 or —OR 3 ; m is 2 to 20; n is 0 to 50; o is 0 to 20; and p is 0 to 10.
Claim 3
Dependent Claim
184 words
An oligomer of the formula: [R 3 SiO 1/2 ] m [O 1/2 SiR 2 O 1/2 ] n [SiO 3/2 R] o [SiO 4/2 ] p (I) wherein each R is selected individually from the group consisting of R 1 , —OR 2 and —OR 3 ; each R 1 is independently a substituted or unsubstituted hydrocarbon group or olefinic hydrocarbon group; each R 2 is a C 1-6 alkyl group or an acyl group; and each R 3 is independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that if R 3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the —OR 3 group; at least one R group is —OR 3 ; for each terminal or linear repeat unit, if one R group is an R 1 group, the other R groups on said unit are —OR 2 or —OR 3 , or a mixture thereof; m is 2 to 20; n is 0 to 50; o is 0 to 20; and p is 0 to 10.
Claim 4
Dependent Claim
184 words
An oligomer of the formula: [R 3 SiO 1/2 ] m [O 1/2 SiR 2 O 1/2 ] n [SiO 3/2 R] o [SiO 4/2 ] p (I) wherein each R is selected individually from the group consisting of R 1 , —OR 2 and —OR 3 ; each R 1 is independently a substituted or unsubstituted hydrocarbon group or olefinic hydrocarbon group; each R 2 is a C 1-6 alkyl group or an acyl group; and each R 3 is independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that if R 3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the —OR 3 group; at least one R group is —OR 3 ; for each terminal or linear repeat unit, if one R group is an R 1 group, the other R groups on said unit are —OR 2 or —OR 3 , or a mixture thereof; m is 2 to 20; n is 0 to 50; o is 0 to 20; and p is 0 to 10.
References Cited (Backward Citations)
US2878195A
Cited
US3148169A
Cited
US3284406A
Cited
US3702783A
Cited
US3692812A
Cited
US3816235A
Cited
US3993837A
Cited
US3944707A
Cited
US3922436A
Cited
US4060539A
Cited
US4049865A
Cited
US4130677A
Cited
US4179537A
Cited
US4550056A
Cited
EP0124805A2
Cited
US4753976A
Cited
US4737562A
Cited
DE3813678A1
Cited
US4950779A
Cited
EP0499233A2
Cited
US5282998A
Cited
US5298998A
Cited
US5210168A
Cited
US5366772A
Cited
US5543173A
Cited
WO1996016125A1
Cited
EP0784072A1
Cited
WO1997025374A1
Cited
EP0801112A2
Cited
EP0890598A1
Cited
WO1999002580A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-26 | 2004-09-25 | 2005-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-26 | 2008-09-25 | 2009-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-26 | 2012-09-25 | 2013-03-27 | $7700.00 | Window Closed / Lapsed |