Phosphorus-containing polymers for optical signal transducers

• US 20020114604A1
• Filed: 02/20/2002
• Published: 08/22/2002
• Est. Priority Date: 02/22/2001
• Status: Active Grant

• Current Assignee: Bayer Intellectual Property GmbH (Bayer AG)
• Original Assignee: Bayer AG
• Inventors: Dorn, Ingmar, Kohler, Burkhard
• Granted Patent: US 7,101,945 B2
• Time in Patent Office: Days
• US Class Current: 385/128
• CPC Class Codes: C08F 230/02 containing phosphorus
• CPC Class Codes: C08F 251/02 on to cellulose or derivatives thereof
• CPC Class Codes: C08F 275/00 Macromolecular compounds obtained by polymerising monomers on to polymers of monomers containing phosphorus, selenium, tellurium or a metal as defined in group C08F30/00
• CPC Class Codes: C08F 8/40 Introducing phosphorus atoms or phosphorus-containing groups
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C09D 151/003 grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds C09D151/04, C09D151/06 take precedence
• CPC Class Codes: C09D 151/02 grafted on to polysaccharides
• CPC Class Codes: C09D 153/00 Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
• CPC Class Codes: G02B 6/1221 made from organic materials
• CPC Class Codes: Y10T 428/29 Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof

Abstract

The invention relates to a phosphorus-containing polymer for coating dielectric materials, to processes for its preparation and to its use, as well as to an optical signal transducer having a coating of the polymer and to its use.

Claims

1. Phosphorus-containing polymer, suitable for coating dielectric surfaces, of the general formula I or II,

P(A)_m(F)_n1(U)_o1 

 

(I)P(A)_m(UF_n2)_o2 

 

(II)

in which

P stands for a linear or branched, uncrosslinked or crosslinked, homo- or heteropolymeric polymer component,

A stands for identical or different phosphorus-containing groups bonded to P,

m stands for a number from 3 to approximately 1000,

F stands for identical or different functional groups bonded directly or indirectly to P, which are present in addition to A,

n1 stands for a number from 1 to approximately 1000,

n2 stands for a number from 1 to approximately 100,

U stands for identical or different, linear or branched, uncrosslinked or crosslinked oligomeric or polymeric segments, made up of identical or different monomers, which are bonded to P,

o1 stands for a number from 0 to approximately 1000,

o2 stands for a number from 1 to approximately 1000.

2. Polymer according to claim 1, characterized in that it contains phosphorus-containing groups A in an amount of from 0.001 to 10 mEq (milliequivalents), preferably from 0.01 to 5 mEq, in particular from 0.1 to 3 mEq.

3. Polymer according to claim 1 or 2, characterized in that it contains functional groups F in an amount of from 0.001 to 20 mEq, preferably from 0.01 to 10 mEq, in particular from 0.5 to 10 mEq.

4. Polymer according to one of claim 1, 2 or 3, characterized in that it contains segments U in an amount of from 0.001 to 20 mEq, preferably from 0.01 to 10 mEq, in particular from 0.5 to 10 mEq.

5. Polymer according to one of the preceding claims, characterized in that the polymer has an average molar mass of from 1000 to 10,000,000 g/mol, preferably from 2100 to 1,000,000 g/mol, particularly preferably from 5000 to 500,000 g/mol, most preferably from 5000 to 300,000 g/mol, in particular from 10,000 to 150,000 g/mol.

6. Polymer according to one of the preceding claims, characterized in that the polymer component P is a statistical copolymer or block copolymer.

7. Polymer according to one of the preceding claims, characterized in that the polymer component P is hydrophilic.

8. Polymer according to one of the preceding claims, characterized in that it contains phosphorus-containing groups A in the form of a spacer carrying from one to six identical or different phosphorus-containing radicals.

9. Polymer according to one of the preceding claims, characterized in that it contains functional groups F that can form covalent bonds, coordination bonds or take part in biochemical recognition reactions.

10. Polymer according to one of the preceding claims, characterized in that it contains functional groups F with crosslinkers.

11. Polymer according to one of the preceding claims, characterized in that the segments U have a molar mass, or average molar mass, of from 100 to 10,000.

12. Polymer according to one of the preceding claims, characterized in that the groups or segments U are hydrophilic.

13. Process for preparing a polymer according to one of claims 1 to 12 by copolymerizing

(A) a monomer containing a phosphorus-containing group A, or a plurality of identical or different monomers containing identical or different phosphorus-containing groups A with

(B) a monomer containing a functional group F, or a plurality of identical or different monomers containing identical or different functional groups F, and

(C) optionally, a monomer containing a segment U, or a plurality of identical or different monomers containing identical or different segments U,

to form a polymer of the formula I, or with

(B′

) a monomer containing a unit (UF_n2)_o2 according to formula II, or a plurality of identical or different monomers containing identical or different units of the formula (UF_n2)_o2 according to formula II,

to form a polymer of the formula II.

14. Process for preparing a polymer according to one of claims 1 to 12 by

(i) preparing a polymer, which forms the polymer component P and carries identical or different functional groups that are suitable as functional groups F, preferably hydroxyl groups, carboxyl groups, derivatives of carboxyl groups and/or amine groups,

(ii) reacting some of the functional groups to form identical or different phosphorus-containing groups A, and

(iii) optionally, reacting some of the functional groups to form identical different segments U,

wherein step (iii) can be carried out after, before or together with step (ii), and wherein not all the functional groups are converted in steps (ii) and (iii), and the unreacted functional groups form the functional groups F of the polymer.

15. Process according to one of the preceding claims, characterized in that some or all of the functional groups that have not been converted in steps (ii) and (iii) are reacted with one or more identical or different crosslinkers to form functional groups F.

16. Use of a polymer according to one of claims 1 to 12 for coating dielectric materials, in particular dielectric waveguides.

17. Use according to the preceding claim, characterized in that the polymer is used for coating dielectric materials, in particular dielectric waveguides, made of TiO₂, Ta₂O₅, ZrO₂, HfO₂ or Al₂O₃, preferably of TiO₂ or Ta₂O₅.

18. Optical signal transducer having a coated dielectric waveguide, characterized in that the coating consists of a polymer according to one of claims 1 to 12.

19. Use of an optical signal transducer having a coated dielectric waveguide according to the preceding claim for immobilizing chemical and/or biochemical recognition elements.