Photocrosslinking of epoxy resins

Lohse, F.; Zweifel, Hans

doi:10.1007/bfb0035357

Cited by 61 publications

(23 citation statements)

References 42 publications

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“…[37][38][39][40] A radically different class of cationic photoinitiators was developed by workers at the Ciba-Geigy Corporation. [41][42][43] Ferrocenium salts (XI) undergo photolysis to generate an iron-based Lewis acid with the loss of the arene ligand (eq 16). Coordination of this latter species with an epoxide monomer is followed by ring-opening polymerization.…”

mentioning

confidence: 99%

The discovery and development of onium salt cationic photoinitiators

Crivello

1999

J. Polym. Sci. A Polym. Chem.

456

183

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mentioning

confidence: 99%

The discovery and development of onium salt cationic photoinitiators

Crivello

1999

J. Polym. Sci. A Polym. Chem.

456

183

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“…Polymerc Epoxidc Lictcu gunstigc Voi~aussc~zuiigcii fur ciuc kurzwelligc l,iclitabsorptio~i uiid fiir cine plio~oiiii~iiertc Vcrtictzuiig [3]. Die Vernetzung kaiin in dicsciri l2all durcli I3rocii-stcdt-oder Lewis-Siiurcii initiicrt wcrtlcn.…”

Section: Eitileitiirigunclassified

Photoinitiierte Vernetzung eines polymeren Epoxides durch Oniumsalze

Franzke¹,

Lorkowski

Timpe³

et al. 1988

Acta Polymerica

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Mcrscburg, Sck lioii Cltrmic, UI)H-4200 Rlerscbburg * * ) Altadcniie clcr Wissenscliaflcn dcr DDH, Zciitralinstilut lur Orgaiiisclic Clicmic, UUII-1199 I;crlitiDurch Copolymerisation voii Cyclolicxyl~tic~ Itacrylat und Glycitlylittctltacryla~~ g c w o~i n c~i c polyrncrc Eposidc hilden in Verbindung mit einigcn Diaryliodonium-inid l'riarylsulfo~iiui~isalzeii anf (:r-bcsclticliI.ctcii Classubstraten Iiomogene transparcnk Schichtcii. Wiiltrcntl der 13cstrahluiig rnil Liclit tlcr Wclleiilangc 1 = 250 bis 300 nrn wird das Polymer durch die kationischcti I'liotolyscprocluktc der Oniurusalzc vcrtictzt. Die Sulfoniutnsalze sirid dabei effcktivcr als die Iodoniumsalze. Fur cine optimalc Vernetzutig ist cin wenig iiucleopliiles Anion, wie z. 13. Hexafluorophosphat, notwendig. Die Bildung des Ka talysators Itann tlurcli An thracen, 9.10-Phcnantlirciichiiion, Benzoplienon und Benzoinisopropyletlier sensibilisiert werdcn, womit tlcr E:inpfiiidlichkeitsbcrcich dcr Laclcsysteme auf 360 bis 420 rim ausdehnbar ist. Die Empfindliclilteit dcr Systemo is1 vcrgleiclibar mit dcnen aiidcrcr, bercits vcrwendcter Pliotopolymersysteine. @omounuyuupooaitrioe cuuouiiue nonujuepiioso 3iiolzcui)o OtiueobijUu COARMU I I o n m e p H b I e a n o~c n~b~, nonyqemme C O I I O J I H M~~H~~I J H~I % I~ylKJIorCI-FCAJIM~TaKI)MJiaTa II r n m q H f i m M e T I'l~otoinduced crosslirrking of a polyrtrcr cpoxide by orriiitu sulk l'olyrncric epoxides produced by copolyirierizatioii o f cycloliexyl iric~lii~cryla~c aiitl glycidyl nrc~liacrylate ~'OPIKI logcl.licr with diaryliodonium salts and triarylsulfonium salts clear coatings on (;r-surfaccs. A 1. irradiation with 2 = 250 t o 300 rim1t h e polymer is crosslinked b y the calionic photolysis products of tlic oniurn salts. T l i c sulfonium salts are more effective initiators tlian iodoniiim salts. For fast crosslinking a less nuclcopliilic anion, c.g. Iicsafluorophosphatc, is necessary. The catalysator forma tion can be sensitized hy atitltmcetic, '3.10-phenaiitlircric quiiiotic, bcnzophcnonc, and bcnzoinisopropyletlicr. The sciisitivi! y of tlicsc systcnis is similar 1.0 other used pltotopolyiiicr syskiris. EitileitiirigDurcli die erl18litcit Anforderuugcii i i i t (lie itiil~ro~~l(~ltli~o-nisclicn 13auclcinciitc stcigeii auclt clio A i i l ' o i~~l~~t~i~i i g e t i ati die zu ilircr IIerstrllirtig vcrwendetcti I'lio~olaclic 11, 21. 1)icsbczuglicli siiid insbcsondcrc Verbcsserungcn in der 1':iripfiiitlliclikei~. u i t t l i r r i nriflosungsveririogeii gefragt. Kiiic Vor1)csscruiig dcs AulI~suiigsvcrinijgens ist gruiidsiitzlicli (lurch vitic Vcrliiirzuitg drr I)cstraItIurigsweIIenIHnge crzichar. ~c r i i~x r g a i i g zur I: V-I,ilhographic crfordert bci Lacken, die itaclt dctn l'rinzip tlcr pliotoinduzicrlen Vernetzung arbcilcn, cine sclir gulc Alstiiiiinung zwisclicn den Eigeuscliafteii tlcr I'liotoi~ii~,ia~i~rc~i untl tlcr zu vcrnct.zendcn l'olyincrkomponeiitc. Wcrin dic Enipfiiidliclilicit dcr 1nit.iatorcn i n i ~~cllctilangctibercicli 2 < 300 i t m licgt und das l'olyinersystctn in dicscin Bercicli o...

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“…Several approaches to the synthesis of photopolymerizable siloxane monomers and oligomers have been taken. [9][10][11][12] Typically, epoxy-modified siloxanes and silanes can be prepared by the hydrosilation of vinyl or vinyl ether-containing molecules using various Si-H functional materials. [14][15][16][17] In this study, we describe the synthesis of a new vinyl ether monomers and epoxy modified silicone monomers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photopolymerization of vinyl ether and epoxy-functionalized silicones

Pyun

Kim

2003

Macromol. Res.

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The reactive precursors, vinyl ethers, and epoxy-silicones, were synthesized. The vinyl ether monomers were prepared from primary alcohol and ethyl vinyl ether with mercury (II) acetate. The epoxy-functionalized silicones have been achieved by the controlled, rhodium-catalyzed, chemoselective hydrosilation of vinyl ether with siloxanes or silane. It was shown that the hydrosilation proceeds exclusively at the vinyl ether group of alkenyl vinyl ether without participation at the alkenyl group. The photoinduced cationic polymerization of these monomers was studied and found to be all highly reactive.

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Photocrosslinking of epoxy resins

Cited by 61 publications

References 42 publications

The discovery and development of onium salt cationic photoinitiators

The discovery and development of onium salt cationic photoinitiators

Photoinitiierte Vernetzung eines polymeren Epoxides durch Oniumsalze

Synthesis and photopolymerization of vinyl ether and epoxy-functionalized silicones

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