http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2954645-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b73bb5b611ad02b686a7967bc6ca3412 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-672 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-124 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00605 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29D11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-124 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-67 |
| filingDate | 1979-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21f9996fcfb0fafbfcb5cb79979aaf0a |
| publicationDate | 1994-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2954645-C2 |
| titleOfInvention | Oligomeric mass, in particular for the production of moldings with a microstructured surface |
| abstract | Monolithic shaped products with micro-structured surface are made from a crosslinked polymer contg. (1) stiff segments of mono- or poly-valent gps. contg. one or more carbocyclic and/or heterocyclic gps., and (2) flexible segments of mono- or poly-valent gps., pref. of polyester, polysiloxane, polyacrylate, polyether or polyolefin type.Prodn. is by casting liquid oligomeric compsns. in a mould and hardening by actinic radiation.Used as diffraction gratings, reflective film with a surface pattern of cube-corner prism elements for road signs, etc. video-recording discs. Fresnel lens elements, ophthalmic lenses, etc. The process allows rapid mass-prodn. without pollution by evolution of solvent or other volatiles, and can be carried out at ambient temp. and pressure.The micro-structure on the mould surface is exactly reproduced without loss of detail, which is retained during use under varied conditions by suitable choice of segments, desired properties e.g. toughness, flexibility, optical clarity, homogeneity, solvent resistance, abrasion and impact resistance can be achieved, with high thermal stability of the microstructure.DEAB- DE2954645 C Oligomers of formula (E(H)m(S(H)m)n)p (I) are new. In (I), m is 1 or 2; n is 0-20, with mean value about 5; p is 2 or 3; E is a 3-8C omega-epoxyalkyl or -epoxyalkoxy, or epoxycyclohexyl which is opt.substd. with lower alkyl and/or linked through CH2, CO, CH2CO, CH2OCOCHCOOCH2 or similar homologous gps. and/or an -O- linkage; H is CO-Y-R-Y-CO-(Y'-R'-CO-Y-R-Y-CO)q, where Y and Y' are each NH or CO, but Y may be omitted, R is an opt. alkyl-substd.benzene, naphthalene, cyclohexane, dicyclohexylmethane, diphenylmethane or norbornene ring, R' is 2-10C alkylene or a 6-10C cycloalkane ring, and q is 0-5; and S is a polyoxyalkylene, polyester, polyolefin, polyacrylate or polysiloxane gp |
| priorityDate | 1978-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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