Patent US4722040A successfully refreshed from Google Patents.
Patent US4713196A successfully refreshed from Google Patents.
US4713196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer compositions exhibiting liquid-crystalline phases
Assignee: BASF SE
•
Filing: 1985-08-16
•
Granted: 1987-12-15
•
Expires: 2005-08-16
Abstract
Abstract Polymer compositions exhibiting liquid-crystalline phases contain chemically bonded mesogenic groups of the formula Ia and/or Ib: ##STR1## in which Q 1 is H, alkyl or alkoxy having 1-5 C atoms, F, Cl, Br or CN, X 1 to X 5 each, independently of one another, are H or an alkyl group having up to 15 C atoms, in which it is also possible for one or two non-adjacent CH 2 groups to be replaced by a group from the group comprising --O--, --S--, --O--CO--O--, O--CO--NH--, --CO--, --CO--O--, --CO--S--, --S--CO--, --SO-- and --SO 2 --. Process for the preparation of polymer compositions of this type comprises the polymerization or grafting of suitable monomers. Polymer compositions of this type are used as substrates in electronics for the fiber and foil techniques.
Inventors
- 👤 Klaus Praefcke
- 👤 Bernd Kohne
- 👤 Eike Poetsch
- 👤 Claus P. Herz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:56
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
127 words
In a polymer exhibiting a liquid-crystalline phase and having mesogenic groups chemically bonded directly to the polymer backbone or bonded thereto by an acyclic chain spacer group, the improvement wherein the mesogenic groups are groups of the formula Ia, or both Ia and Ib: ##STR12## wherein Q 1 is H, alkyl or alkoxy each of 1-5 C atoms, F, Cl, Br or CN, each of X 1 or X 5 independently is H, alkyl of up to 15 C atoms or alkyl of 1-15 C-atoms in which one or two non-adjacent CH 2 groups are replaced by --Q--, --S--, --O--CO--O--, --O--CO--NH--, --CO--, --CO--O--, --CO--S--, --S--CO--, --SO-- or --SO 2 --, with the proviso that at least two of X 1 to X 5 are different from H.
Claim 2
Dependent Claim
127 words
In a polymer exhibiting a liquid-crystalline phase and having mesogenic groups chemically bonded directly to the polymer backbone or bonded thereto by an acyclic chain spacer group, the improvement wherein the mesogenic groups are groups of the formula Ia, or both Ia and Ib: ##STR12## wherein Q 1 is H, alkyl or alkoxy each of 1-5 C atoms, F, Cl, Br or CN, each of X 1 or X 5 independently is H, alkyl of up to 15 C atoms or alkyl of 1-15 C-atoms in which one or two non-adjacent CH 2 groups are replaced by --Q--, --S--, --O--CO--O--, --O--CO--NH--, --CO--, --CO--O--, --CO--S--, --S--CO--, --SO-- or --SO 2 --, with the proviso that at least two of X 1 to X 5 are different from H.
Claim 3
Dependent Claim
9 words
A polymer of claim 1 which is a homopolymer.
Claim 4
Dependent Claim
22 words
A polymer of claim 1 which is a copolymer wherein all mesogenic groups are of formula Ia or both Ia and Ib.
Claim 5
Dependent Claim
89 words
A polymer of claim 1 wherein said mesogenic groups Ia and Ib are attached to the polymer backbone by a spacer group which is C 1-21 alkylene, C 1-21 -alkylene substituted by halo, CN, or C 1-5 alkyl, C 1-21 -alkylene wherein one or two non-adjacent CH 2 -groups are replaced by --O--, --S--, --O--CO--, --CO--O--, --S--CO--, --CO--S--, --SO-- or --SO 2 , or C 1-21 -alkylene wherein two adjacent CH 2 groups are replaced by --C═C-- or --CH═CX--, wherein X is H, halo, CN or C 1-5 -alkyl.
Claim 6
Dependent Claim
24 words
A polymer of claim 1 wherein in all groups Ia and Ib, at least 3 of X 1 to X 5 are not H.
Claim 7
Dependent Claim
22 words
A polymer of claim 1 wherein in all groups Ia and Ib, all of X 1 to X 5 are not H.
Claim 8
Dependent Claim
22 words
A polymer of claim 6 wherein in all groups Ia and Ib, all of X 1 to X 5 are the same.
Claim 9
Dependent Claim
33 words
A polymer of claim 1 wherein in all groups Ia and Ib, in each of X 1 to X 5 , there is contained --O--, --S--, --CO--, --CO--O--, --SO--, or --SO 2 --.
Claim 10
Dependent Claim
43 words
A polymer of claim 4 wherein the groups Ia and Ib are attached by --(CH 2 ) n --Q 2 --, wherein Q 2 is a single bond, --CO--S--, --CO--O, --O--CO--, --CO--, --O--, --S--, --SO-- or --SO 2 --, and n is 3-20.
Claim 11
Dependent Claim
70 words
A polymer of claim 4 prepared by polymerizing at least one compound of the formula Y-spacer-M, wherein Y is C 2-5 -alkenyl attached at the ω or (ω-1) position, "spacer" is as defined in claim 4 and M is a group Ia or both Ia and Ib, and wherein Y is attached to "spacer" directly or by a group --O--, --S--, --SO--, --SO 2 --, --CO--O--, --CO--NH--, --O--CO--NH--, or --O--CO--O.
Claim 12
Dependent Claim
49 words
A polymer of claim 4 prepared by grafting at least one compound of the formula Y-spacer-M to a polymer backbone wherein, Y is hydroxy, amino, alkenyl, mercapto, epoxy, carboxy or a reactive carboxy derivative, "spacer" is as defined in claim 4 and M is a group Ia or Ib.
Claim 13
Dependent Claim
13 words
A polymer of claim 1 wherein the backbone is that of an organopolysiloxane.
Claim 14
Dependent Claim
18 words
A polymer of claim 1 which is a copolymer further comprising chiral groups attached to the polymer backbone.
Claim 15
Dependent Claim
27 words
In an anisotropic composition comprising an organic polymeric material useful in electromagnetic applications, the improvement wherein the polymer material is an anisotropic polymer material of claim 1.
Claim 16
Dependent Claim
13 words
The composition of claim 14 in the form of a fiber or foil.
Claim 17
Dependent Claim
14 words
A polymer of claim 1, wherein the mesogenic groups are of the formula Ia.
References Cited (Backward Citations)
US4293435A
Cited
US4358391A
Cited
US4410570A
Cited
US4388453A
Cited
US4578210A
Cited
DE3334056A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |