Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From halogenated hydrocarbon reactant
Patent
1990-12-20
1992-05-05
Kight, III., John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From halogenated hydrocarbon reactant
564289, 570190, 585469, C07C 1700
Patent
active
051109034
ABSTRACT:
A process is provided for the preparation of a mixture of parylene dimers wherein the distribution of dimers within the mixture is predetermined by the proper selection of halogenated and non-halogenated 2,2-paracyclophane starting material. Since the dimers are free of alpha-halogens, the formation of environmentally undesirable acid halides during the deposition of parylene films and coatings is avoided. Since the dimers are useful in the preparation of inert, transparent, conformal coatings of parylene, desirable chemical and/or physical properties can be imparted to such coating by formation of a dimer mixture of a predetermined composition. The parylene film properties, composition and deposition conditions will be different by varying dimer distribution.
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Bassett David R.
Lee Chinsoo
Kight, III. John
Union Carbide Chemicals & Plastics Technology Corporation
Volles Warren K.
Wright Shelley A.
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