Detail of "87188-51-0"

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Silicone-based cyanate-ester crosslinkable die attach adhesive

Silicone-based cyanate-ester crosslinkable die attach adhesive. Jayaraman, Saikumar (USA ). U.S. Pat. Appl. Publ. US 2005014920 A1 20 Jan 2005,9 pp. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: C08G077-04. APPLICATION: US 2003-607426 25 Jun 2003. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Section cross-reference(s): 76 The present invention describes a method including: providing a material A, the material A including a siloxane backbone with a hydride functional group; reacting the material A with a material B in the presence of a catalyst to form a material C, the material B including an alkenyl functional group and an arom. carbonate functional group; heating the material C to form a material D, the material D including a phenol functional group; and reacting the material D with a material E and a material F to form a material G, the material E including a cyanogen halide, the material F including an acid acceptor, the material G including an arom. cyanate ester functional group. The present invention further describes a die attach adhesive including a three-dimensional network of substituted triazine rings.Except for chemicals metioned above, 506-68-3 and 87188-51-0 are also used. .

Using the critical ionization model for resist development to estimate contrast curves and roughening

Using the critical ionization model for resist development to estimate contrast curves and roughening. Houle, Frances A.; Hinsberg, William D.; Sanchez, Martha I. (IBM Almaden Research Ctr., San Jose, CA 95120, USA). Proceedings of SPIE-The International Society for Optical Engineering, 5039(Pt. 1, Advances in Resist Technology and Processing XX), 334-342 (English) 2003 SPIE-The International Society for Optical Engineering. CODEN: PSISDG. ISSN: 0277-786X. DOCUMENT TYPE: Journal CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) The dissoln. of exposed regions of polymeric resists in aq. base to form a pattern is a complex reactive process, and is usually described only empirically. It has recently been proposed that a crit. level of ionization is required for a polymer chain to move from the film into soln., and we use this model as a framework for a simple reaction scheme that describes the transformation of a polymer chain from an unsolvated form into a solvated one. Simulations of the dissoln. process are used to predict the dose dependence of thickness loss, resist contrast and line shapes as a function of local extent of polymer deprotection in p-tert-butyloxycarbonyloxystyrene (PTBOCST) chem. amplified pos. tone photoresist, and examine local compn. and kinetics factors that lead to roughening. 87188-51-0 and 424837-88-7 which are cas registry numbers of chemicals are mentioned. The results show that nonlinearities inherent in the dissoln. kinetics are responsible for resist imaging. The simulations can be used to define a simple functional form for thickness loss as a function of dose, providing a phys.-based alternative to phenomenol. dissoln. models for prediction of developed profiles from calcd. latent images. The extendability of the approach to copolymers and to systems that undergo significant gellation is discussed. .