当前申请(专利权)人：
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
原始申请(专利权)人：
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
当前申请(专利权)人地址：
Incorporated in the United Kingdom, 5th Floor, 25 Farringdon Street, LONDON, EC4A 4AB, United Kingdom
摘要：
A shaped sorbent comprising a plurality of layers of photopolymerised resin containing particles of a sorbent material. The sorbent material may comprise alumina, silica, carbon or a molecular sieve, but preferably a zeolite, but can be reactive and may be a compound of a transition metal, rare-earth metal, alkali or alkaline earth metal e.g. copper, iron or palladium. Preferably the shaped sorbent comprises a molecular sieve and a reactive sorbent, wherein the maximum sorbent particle size is less than the layer thickness. The photopolymerised resin can be a photopolymer with a viscosity of 1-500 mPa.s at 20°C and may comprise a mixture of monomers and oligomers functionalized by an acrylate, with a photoinitiator. The product can comprise 1-70 vol% of sorbent and 5-5000 layers, each being 10-300 µm thick, and have a cross-sectional size from 0.3-100 mm in the form of an open-ended cylinder containing a lattice structure or layers of spaced parallel struts or meshes. A method of making the shaped sorbent, preferably by additive layer photopolymerisation comprising stereolithography is also described, wherein electromagnetic radiation is used to cure the polymer layer upon layer. The shaped sorbent can be used as a getter, preferably in a sealed enclosure.
权利要求：
Claims.
1. A shaped sorbent comprising a plurality of layers of photopolymerised resin containing
particles of a sorbent material.
2. A shaped sorbent according to claim 1 wherein the sorbent material comprises alumina,
silica, carbon or a molecular sieve, preferably a zeolite material.
3. A shaped sorbent according to claim 1 or claim 2 wherein the sorbent material comprises
a reactive sorbent material, preferably one or more transition metal compounds, rare-earth
metal compounds, alkali metal compounds or alkaline earth metal compounds, more
preferably compounds of copper, zinc, cobalt, nickel, iron, platinum and palladium.
4. A shaped sorbent according to any one of claims 1 to 3 comprising a molecular sieve
sorbent material and a reactive sorbent material.
5. A shaped sorbent according to any one of claims 1 to 4 wherein the maximum particle size
(Dv100) of the sorbent material in the shaped sorbent is less than the layer thickness,
preferably less than a half the layer thickness, more preferably less than a fifth of the layer
thickness, most preferably less than a tenth of the layer thickness.
6. A shaped sorbent according to any one of claims 1 to 5 wherein the photopolymerised
resin is derived from a photopolymer comprising a mixture of multifunctional monomers
and oligomers functionalized by an acrylate, and preferably comprising a photoinitiator.
7. A shaped sorbent according to any one of claims 1 to 6 comprising from 1 to 70% by
volume of sorbent material.
8. A shaped sorbent according to any one of claims 1 to 7 comprising 5 to 5000 layers.
9. A shaped sorbent according to any one of claims 1 to 8 wherein each layer has a
thickness in the range of from 10 to 300 um, preferably in the range of from 20 t0o100 um
10. A shaped sorbent according to any one of claims 1 to 9 wherein the shaped sorbent has a
cross-sectional length width or height, in the range of from 0.3 mm to 100 mm, preferably
0.3mmto 50 mm.
11. A shaped sorbent according to any one of claims 1 to 10 wherein the shaped sorbent is in
the form of an open-ended cylinder containing a lattice structure or layers of spaced
parallel struts or meshes, preferably wherein the cylinder has an aspect ratio, < 1, more
preferably wherein the shaped sorbent comprises one or more lugs or tabs to enable it to
be secured in use.
12. A method for making a shaped sorbent unit comprising the steps of (i) combining a
sorbent material with a photopolymer to form a sorbent mixture, and (ii) using
photopolymerisation to form a shaped sorbent comprising a plurality of layers of
photopolymerised resin containing particles of the sorbent material.
13. A method according to claim 12 wherein the photopolymerisation comprises additive layer
photopolymerisation, preferably comprising stereolithography, more preferably comprising
digital light processing or continuous liquid interface production.
14. A method according to claim 12 or claim 13 wherein the method comprises the steps of: (i)
forming a sorbent mixture comprising a photopolymer and a sorbent material; (ii) exposing
the sorbent mixture to electromagnetic radiation according to a predetermined pattern to
form a layer of cured polymer; and (iii) repeating step (ii) layer upon layer to form the
shaped sorbent.
15. A method according to any one of claims 12 to 14 wherein the photopolymer has a
viscosity in the range of from 1 to 500 mPa-s. at 20°C.
16. A method according to any one of claims 12 to 15 wherein the sorbent mixture comprises
from 1 to 70% by volume of the sorbent material.
17. A method according to any one of claims 12 to 16 wherein the sorbent mixture comprises
a dispersant.
18. A use of a shaped sorbent comprising a plurality of layers of photopolymerised resin
containing particles of a sorbent material as a getter.
19. A use according to claim 18 wherein the getter is placed in a sealed enclosure.