Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1992-07-31
1993-11-02
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525437, 525444, 528193, 528194, 528271, 528272, C08G 6306, C08G 6302, C08G 6318, C08G 2000
Patent
active
052584860
ABSTRACT:
A single reactor process for formation of block copolymers comprising aromatic ester mesogenic units containing flexible alkane spacers and polyester flexible coil units in the main chain thereof which comprises reacting an .alpha.,.omega.-bis(hydroxybenzoyloxy) alkane monomer with an aromatic acid chloride in the presence of a functionalized flexible coil oligomer under temperature conditions in which an acid chloride-terminated bis(hydroxyalkyl terephthalate) oligomer was first formed at a first, lower temperature and the block copolymer was then formed at a second, higher temperature by reacting this oligomer with the functionalized flexible coil oligomer.
REFERENCES:
Ober et al., "Polymer Journal," vol. 14, No. 1, pp. 9-17 (1982).
Yoo et al., "Journal of Appl. Pol. Sci.," vol. 35 1201-1212 (1988).
Jung-Il Jin, et al. "Journ. of Pol. Sci" vol. 28, 531-543 (1990).
Dashevsky Sophia
Kim Ki-Soo
Liu Jian-Lin
Palmaka Stanley W.
Akzo NV
Fennelly Richard P.
Kight III John
Morris Louis A.
Mosley T.
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