US4760122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cluster acrylic silicones having cyclic clusters
Assignee: Henkel Loctite Corp
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Filing: 1986-01-06
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Granted: 1988-07-26
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Expires: 2006-01-06
Abstract
Abstract Novel polyorganosiloxane polymers having at least one terminal cyclic diorganosiloxane moiety containing a plurality of acrylic units of the formula ##STR1## wherein R 1 is H or lower alkyl; X is O, NH or S; and Y is a divalent linking group.
Inventors
- 👤 Steven T. Nakos
- 👤 Samuel Q. Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08G77/04; C08G77/20; Y; Y10; Y10S; Y10S525/00; Y10S525/901; Y10S525/91
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
A polyorganosiloxane polymer having a structure represented by one of the formulas: (AB).sub.m C or [(AB).sub.m ].sub.n SiR.sub.(4-n) where A is a cyclic diorganosiloxane moiety comprising between 4 and 8 siloxane repeat units, including a plurality of units of the formula ##STR15## where R 1 is H or lower alkyl, X is O, NH or S, and Y is a divalent linking group; B is an organosiloxane segment represented by the formula: ##STR16## C is A or triorganosilyl group; the R groups are the same or different organo groups other than acrylic groups or groups co-curable therewith; m is an integer of 1 or more; n is 3 or 4; and x is an integer of at least 100.
Claim 2
Dependent Claim
119 words
A polyorganosiloxane polymer having a structure represented by one of the formulas: (AB).sub.m C or [(AB).sub.m ].sub.n SiR.sub.(4-n) where A is a cyclic diorganosiloxane moiety comprising between 4 and 8 siloxane repeat units, including a plurality of units of the formula ##STR15## where R 1 is H or lower alkyl, X is O, NH or S, and Y is a divalent linking group; B is an organosiloxane segment represented by the formula: ##STR16## C is A or triorganosilyl group; the R groups are the same or different organo groups other than acrylic groups or groups co-curable therewith; m is an integer of 1 or more; n is 3 or 4; and x is an integer of at least 100.
Claim 3
Dependent Claim
38 words
A polyorganosiloxane as in claim 1 where the A segment is defined by the formula: ##STR17## where R is as previously defined, R 1 is H or alkyl, R 2 is alkylene or alkenylene and m is 3-7.
Claim 4
Dependent Claim
10 words
A polyorganosiloxane as in claim 2 where R is H.
Claim 5
Dependent Claim
10 words
A polyorganosiloxane as in claim 3 where m is 3.
Claim 6
Dependent Claim
34 words
A polyorganosiloxane as in claim 2 represented by the formula: ##STR18## where R is methyl, R 1 is H and R 2 is propenyl, and t is an integer of from 1 to 5.
Claim 7
Dependent Claim
59 words
A polyorganosiloxane as in claim 1 where the A segment is defined by the formula: ##STR19## where R, is as defined in claim 1, R is H or alkyl, R 2 is alkylene or alkenylene and R 4 is hydrocarbyl oxyhydrocarbyl, halo substituted hydrocarbyl or ##STR20## j is at least 2, k is 1-2, l is 0-5 and j+k+l=4-8.
Claim 8
Dependent Claim
10 words
A polyorganosiloxane as in claim 6 where l is 0-0.5.
Claim 9
Dependent Claim
16 words
A polyorganosiloxane as in claim 6 where j is at least 2.5 and k is 1-1.5.
Claim 10
Dependent Claim
11 words
A polyorganosiloxane as in claim 6 represented by the formula: ##STR21##
Claim 11
Dependent Claim
11 words
A polyorganosiloxane as in claim 6 represented by the formula: ##STR22##
Claim 12
Dependent Claim
84 words
A polyorganosiloxane represented by the formula A BC where A is a monovalent cyclic organosiloxane represented by the formula: ##STR23## where R is alkyl or aryl, R 1 is H or alkyl, R 2 is alkylene or alkenylene, R 4 is hydrocarbyl, oxyhydrocarbyl, halo substituted hydrocarbyl or ##STR24## j is at least 2, k is 1-2, l is 0-5 and j+k+l is 4-8; B is represented by the formula: ##STR25## where x is at least 2; and C is A or a triorganosilyl group.
Claim 13
Dependent Claim
84 words
A polyorganosiloxane represented by the formula A BC where A is a monovalent cyclic organosiloxane represented by the formula: ##STR23## where R is alkyl or aryl, R 1 is H or alkyl, R 2 is alkylene or alkenylene, R 4 is hydrocarbyl, oxyhydrocarbyl, halo substituted hydrocarbyl or ##STR24## j is at least 2, k is 1-2, l is 0-5 and j+k+l is 4-8; B is represented by the formula: ##STR25## where x is at least 2; and C is A or a triorganosilyl group.
Claim 14
Dependent Claim
10 words
A polyorganosiloxane as in claim 11 where C is A.
Claim 15
Dependent Claim
10 words
A polyorganosiloxane as in claim 11 where C is ##STR26##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |