Methods for the preparation of oriented thin large-area single c

Details Methods for the preparation of oriented thin large-area single c Methods for the preparation of oriented thin large-area single c

1985-02-26

1987-10-06

Straub, Gary P.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156624, 156DIG113, 427 35, 427 44, C30G 112, C30G 2954, C30G 2958

Patent

active

046981217

ABSTRACT:
Methods for preparing thin large-area single crystals of diacetylenes and polydiacetylenes having surface dimensions greater than or equal to about 0.1 mm on all sides and a uniform thickness less than or equal to about 100 microns. The methods involve forming a liquid layer, preferably by melting crystals of a pure diacetylene monomer between two opposed surfaces, one surface being movable with respect to the other; applying pressure to the molten monomer layer disposed between the two surfaces; shearing the molten layer by sliding the movable surface in a single direction that is in a straight line across the molten monomer layer while keeping the molten monomer layer under constant pressure; and crystallizing the shorn molten monomer layer while the shorn molten monomer layer is kept under constant pressure to form a thin large-area single crystal of pure diacetylene monomer. The method for preparing thin large-area single crystals of polydiacetylene further involves exposing a surface of the thin large-area single crystal of diacetylene monomer to ultraviolet or gamma radiation to form a thin large-area single crystal of polydiacetylene.

REFERENCES:
patent: 4215208 (1980-07-01), Yee et al.
patent: 4220747 (1980-09-01), Preziosi et al.
patent: 4235108 (1980-11-01), Patel
patent: 4238352 (1980-12-01), Patel
patent: 4562141 (1985-12-01), Tieke
Bloor et al, Chemical Physics Letters, vol. 24, No. 3, 2/1/74, pp. 407-411.
Rickert et al, Mol. Cryst Liq. Cryst., 1983, vol. 93, pp. 307-314.
Casalnuovo et al, Makromol. Chem., Rapid Commun., 5, pp. 77-81, (1984).
Balik et al, J. Pol. Sci., 20, pp. 2003-2016 (1982).
Thakur et al, Growth of Large Area Thin Film Single Crystals of Poly(diacetylenes), Macromolecules, vol. 18, pp. 2341-2344, Nov. 85.
Thakur et al, Presentation: Optical Properties of a New Phase of PolyTCDU, APS Meeting, 3/27/84, Gordon Conference, 7/3/84-abstract.
Collan, Cryogenics, Jun. 1969, p. 215.

Affiliated with

Also associated with

Rating

Methods for the preparation of oriented thin large-area single c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods for the preparation of oriented thin large-area single c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for the preparation of oriented thin large-area single c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2115897