Manufacture of improved support matrices
View Patent ↗A method for the production of a cross-linked support matrix that in form of a bed will permit liquid flow velocities above 5 cm/h, preferably above 50 cm/h, to pass through the bed. The method is characterized in that it comprises the steps: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation. The use of a cross-linked support matrix produced by a method comprising the steps of: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation as a support matrix in liquid chromatography, cell culturing, step-wise solid phase synthesis of organic compounds, running catalytic reactions by the use of a solid phase bound catalyst.
1. A method for the production of a cross-linked support matrix in form of a porous monolith or particles that packed to a chromatographic bed will permit liquid flow velocities above 5 cm/h, preferably above 50 cm/h, to pass through the bed for at least 1 hour, comprising the steps of:
(a) providing a starting support matrix that has pendent unsaturated groups, and
(b) subjecting said starting support matrix to electron beam or gamma-ray irradiation to effect crosslinking, wherein the staring support matrix has been obtained by polymerizing a mixture of monomers carrying one or more unsaturated groups, at least one of said monomers carrying two or more unsaturated groups (monomer I).
2. The method of claim 1 , wherein the starting support matrix has been produced by other means than by polymerisation caused by electron beam irradiation or gamma-irradiation.
3. The method of claim 1 , wherein said starting support matrix is subjected to electron beam irradiation and that the dose is selected within the interval 0.1–20 Mrad.
4. The method of claim 1 , wherein at least one of said monomers in the mixture carries one unsaturated group (monomer II).
5. The method of claim 1 , wherein monomer I comprises a polyhydroxy polymer substituted with a plurality of unsaturated groups and/or a non-polymer low molecular weight monomer carrying two or three unsaturated groups.
6. The method of claim 1 , wherein monomer I comprises a polyhydroxy polymer substituted with a plurality of unsaturated groups.
7. The method of claim 4 , wherein
(a) monomer I comprises monomers selected from the group consisting of (i) divinyl aryls, (ii) compounds having two vinyl aryls groups, (iii) compounds having two acryl groups or two methacryl groups, (iv) compounds having two allyl groups, (v) compounds having two vinyl ether groups, and (vi) compounds having two N-vinyl carboxamide groups, and
(b) monomer II comprises monomers selected from the group consisting of (i) compounds having one vinyl aryl, (ii) compounds having one acryl or methacryl group, (iii) compounds having one allyl group, (iv) compounds having one vinyl ether group, and (v) compounds having one N-vinyl carboxamide groups.
8. A cross-linked support matrix for use as a support matrix in liquid chromatography, cell culturing, step-wise solid phase synthesis of organic compounds, running catalytic reactions by the use of a solid phase bound catalyst in form of porous monolith or particles produced by a method comprising the steps of:
(a) providing a starting support matrix that has pendent unsaturated groups, and
(b) subjecting said starting support matrix to electron beam or gamma-ray irradiation, wherein the staring support matrix has been obtained by polymerizing a mixture of monomers carrying one or more unsaturated groups, at least one of said monomers carrying two or more unsaturated groups (monomer I).
9. The matrix of claim 8 , wherein said starting support matrix is subjected to electron beam irradiation and that the dose is selected within the interval 0.1–20 Mrad.
10. The matrix of claim 8 , wherein at least one of said monomers in the mixture carries one unsaturated group (monomer II).
11. The matrix of claim 8 , wherein monomer I comprises a polyhydroxy polymer substituted with a plurality of unsaturated groups and/or a non-polymer low molecular weight monomer carrying two or three unsaturated groups.
12. The matrix of claim 8 , wherein monomer I comprises a polyhydroxy polymer substituted with a plurality of unsaturated groups.
13. The matrix of claim 10 , wherein
(a) monomer I comprises monomers selected from the group consisting of (i) divinyl aryls, (ii) compounds having two vinyl aryls groups, (iii) compounds having two acryl groups or two methacryl groups, (iv) compounds having two allyl groups, (v) compounds having two vinyl ether groups, and (vi) compounds having two N-vinyl carboxamide groups, and
(b) monomer II comprises monomers selected from the group consisting of (i) compounds having one vinyl aryl group, (ii) compounds having one acryl or methacryl group, (iii) compounds having one allyl group, (iv) compounds having one vinyl ether group, and (v) compounds having one N-vinyl carboxamide groups.
14. The method of claim 6 , wherein said polyhydroxy polymer is a polysaccharide.
15. The matrix of claim 12 , wherein said polyhydroxy polymer is a polysaccharide.