Carbodiimides and/or oligomeric polycarbodiimides based on 1 3-b

Details Carbodiimides and/or oligomeric polycarbodiimides based on 1 3-b Carbodiimides and/or oligomeric polycarbodiimides based on 1 3-b

1996-01-30

1997-01-28

O'Sullivan, Peter

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

521170, 521172, 524195, 528 80, 528 83, 528 84, 528272, 560 27, 564 56, 564252, C07C27524, C07C27120

Patent

active

055979424

ABSTRACT:
Novel carbodiimides and/or oligomeric polycarbodiimides containing terminal isocyanate, urethane and/or urea groups are obtainable, for example, by condensation of 1,3-bis(1-methyl-1-isocyanatoethyl)benzene with elimination of carbon dioxide followed, if desired, by reaction of all or some of the free isocyanate groups of the resultant (poly)carbodiimides with aliphatic, cycloaliphatic or araliphatic amines, alcohols and/or alkoxypolyoxyalkylene alcohols, and are used as stabilizers against hydrolytic degradation of polyaddition and polycondensation products containing ester groups.

REFERENCES:
patent: 2941983 (1960-06-01), Smeltz
patent: 3193522 (1965-07-01), Neumann et al.
patent: 3193523 (1965-07-01), Neumann et al.
patent: 4419294 (1983-12-01), Feldman et al.
patent: 5008363 (1991-04-01), Mallon et al.
patent: 5210170 (1993-05-01), Quirling et al.
EPO Search Report dated Oct. 5, 1994; Translation of EPO Search Report.

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