申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0288124A2
公开(公告)日:1988-10-26
Compositions comprising an alternating copolymer of ethylene and carbon monoxide and from 0.3 to 5.0 %wt of a stabilizing compound selected from diarylamines, hydroxybenzophenones, and benzotriazoles or triazines carrying a sterically hindered phenol substituent.
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0326223A2
公开(公告)日:1989-08-02
Stabilized copolymer compositions comprising an alternating copolymer of carbon monoxide and an olefinically unsaturated compound and from 0.03 to 3.0 %w of a sterically hindered phenolic (blend) compound selected from:
1) bis- and tris-phenolic alkanes,
2) tris-phenolic (alkyl)benzenes,
3 tris-phenolic cyanurates,
4) symmectrical diesters of hydroxyphenyl substituted aliphatic monocarboxylic acids and N,N′-bis(hydroxyalkyl)oxalamide,
5) blends comprising on the one hand specific defined phenolic compounds, and on the other hand aromatic amines and/or compounds of general formula
R¹OOC-(CH₂)p-S-(CH₂)q-COOR² in which p, q, R¹ and R² have defined meanings.
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0395183A1
公开(公告)日:1990-10-31
Compositions comprising linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are stabilized against degradation caused by exposure to UV light by the inclusion therein of (a) a diphenylamine and/or a thiobisphenol and (b) a certain type of carbon black.
Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0443685A2
公开(公告)日:1991-08-28
Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds, by copolymerising the monomers in the presence of a catalyst composition containing a Group-VIII metal and washing the formed copolymer by contacting the copolymer with a liquid which contains, dissolved in a solvent, a mono-, di- or tricarboxylic acid having up to 8 carbon atoms, or a zinc, aluminium or magnesium salt thereof.
Benzotriazole stabilizers for polyols and polyurethane foam
申请人:R.T. VANDERBILT COMPANY, Inc.
公开号:EP0839861A2
公开(公告)日:1998-05-06
Polyether and polyester poloyols and polyurethane foams are stabilized by including therein stabilizers selected from (1) diphenylaminomethylbenzotriazole substituted by alkyl or phenylalkyl groups or (2) synergistic compositions consisting of (a) benzotriazole or alkylbenzotriazole and (b) secondary aromatic amine substituted by alkyl or phenylalkyl groups wherein the benzotriazole and amine is present in critical ratios.
Furthermore, a method is disclosed for preparation of polyurethane foams from polyols and polyisocyanate that have reduced discoloration due to scorch by adding diphenylamino methylbenzotriazole or compositions of benzotriazole and secondary aromatic amine as scorch inhibitors to the polyol, foaming the polyol and curing.