Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1980-01-16
1981-05-19
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525507, 528 96, 528 98, 528 99, 528111, 528113, 528341, 528361, 528365, 528367, 528407, C08G 5956
Patent
active
042686563
ABSTRACT:
A N-substituted piperazine or N-substituted homopiperazine adduct with a polyepoxide is used as a co-curing agent in epoxy resin systems containing a polyepoxide and a known curing agent such as dicyandiamide, a carboxylic acid anhydride, or a dihydrazide. The preferred adducts have a ratio of epoxy groups to secondary amino groups of between 1.2:1 and 3:1. The preferred polyepoxides are polyglycidyl ethers of 4,4'-isopropylidenediphenol (bisphenol A). Suitable adducts are prepared from N-methyl-, N-(2-hydroxyethyl)-, N-octyl-, N-phenyl- and N-benzyl piperazine and N-methyl homopiperazine.
REFERENCES:
patent: 2847395 (1958-08-01), Wear
patent: 3386955 (1968-06-01), Nawakowski et al.
patent: 3386956 (1968-06-01), Nawakowski et al.
patent: 3391113 (1968-07-01), Lopez et al.
patent: 3400098 (1968-09-01), Parry
patent: 3547885 (1970-12-01), Dante et al.
patent: 3562215 (1971-02-01), Moore
patent: 3639657 (1972-02-01), Moran et al.
patent: 3707583 (1972-12-01), McKown
patent: 3756984 (1973-09-01), Klaren et al.
patent: 3795657 (1974-03-01), Howsam et al.
patent: 3839281 (1974-10-01), Dreher
patent: 3894113 (1975-07-01), Pagel
patent: 4066625 (1978-01-01), Bolger
patent: 4101514 (1978-07-01), Thom
patent: 4152285 (1979-05-01), Thomassen
patent: 4188474 (1980-02-01), Waddill et al.
Chiao Wen B.
Ray-Chaudhuri Dilip K.
Schoenberg Jules E.
Kelley Margaret B.
National Starch and Chemical Corporation
Nielsen Earl A.
Szala Edwin M.
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