Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-04-27
1989-11-14
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525462, 525470, C08L 6900
Patent
active
048808849
ABSTRACT:
A method for preparing novel poly(aryl ether)-(poly aryl carbonate) block copolymers by the decarboxylation of copolycarbonates prepared by the condensation of two different aromatic dihydroxy compounds and a carbonate precursor such as phosgene. At least one of the aromatic diols must have at least one electron-withdrawing group located in a position ortho or para to at least one of its hydroxy groups and at least one of the diols must not have any electron-withdrawing groups in a position ortho or para to either of its hydroxy groups. The method is particularly effective in making crystalline block copolymers.
REFERENCES:
patent: 3106544 (1963-10-01), Laakso et al.
patent: 3554742 (1971-01-01), Gramza et al.
patent: 3641200 (1972-02-01), Matzner
patent: 4134936 (1979-01-01), Byrne et al.
patent: 4436839 (1984-03-01), Behnke et al.
patent: 4463132 (1984-07-01), Tyrell et al.
patent: 4563516 (1986-01-01), Schreckenberg et al.
patent: 4594404 (1986-06-01), Kawakami et al.
patent: 4607070 (1986-08-01), Schreckenberg et al.
patent: 4645806 (1987-02-01), Freitag et al.
patent: 4665122 (1987-05-01), Robeson et al.
McGrath et al., BISPHENOL--A--POLYCARBONATE--BISPHENOL--A--POLYSULFONE ETHER BLOCK COPOLYMERS, Polymer Engineering & Science, vol. 17, No. 8, 647-651, (Aug. 1977).
McGrath et al., HOMOGENEOUS AND MICROHETEROGENEOUS BLOCK COPOLYMERS, Journal of Polymer Science; Polymer Symposium 60, 29-46, (1977).
Johnson et al., POLY(ARYL ETHERS) BY NUCLEOPHILIC AROMATIC SUBSTITUTION. I. SYNTHESIS AND PROPERTIES, Journal of Polymer Science, Part A--1, vol. 5, 2375-2398, (1967).
Ward et al., POLY(ARYLENE ETHER SULFONE)--POLY(ARYL CARBONATE) BLOCK COPOLYMERS, Adv. in Chem. Series 176, 293-311, (1978).
Jost et al., THERMOLYES DES CARBONATES D'ARYLE INITIEE PAR LES BASES: I--MECANISME PAR SNAR DANS LE CAS DES CARBONATES D'ARYLE PORTEURS DE GROUPES ELECTRO--ATTRACTEURS IDENTIQUES, Tetrahedron Letters, vol. 23, No. 42, pp. 4311-4314, Pergamon Press Ltd., (1982).
Crain Steven P.
Mullins Michael J.
Murray Daniel J.
Woo Edmund P.
Pertilla Theodore E.
The Dow Chemical Company
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