[EN] PREPARATION PROCESS OF ORTHO ALKOXY BISPHENOL MONOMERS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE MONOMÈRES D'ORTHOALCOXY BISPHÉNOL
申请人:UNIV LEUVEN KATH
公开号:WO2019002503A1
公开(公告)日:2019-01-03
A process for making ortho alkoxy bisphenol monomers includes contacting an (alk-1-enyl)alkoxyphenol (type 1) with an alkoxyphenol (type 2) in the presence of an acidic catalyst. Both type of renewable phenols (type 1 and 2) can be generated from lignocellulosic biomass. The use of such alkoxy phenols as a precursor to bisphenol monomers has the potential to reduce the cost and environmental impact of structural materials, while meeting or exceeding the performance of current petroleum-derived polymers, such as thermoplastics and thermoset resins.
STABILIZATION OF HOUSEHOLD, BODY-CARE AND FOOD PRODUCTS BY USING BENZOTROPOLONE CONTAINING PLANT EXTRACTS AND/OR RELATED BENZOTROPOLONE DERIVATIVES
申请人:Wagner Barbara
公开号:US20120230925A1
公开(公告)日:2012-09-13
Disclosed is the use of benzotropolone derivatives of formula (1), wherein R
1
, R
2
and R
7
independently from each other are hydrogen; C
1
-C
3
alkyl; or COR
8
; R
3
is hydrogen; or COOR
9
R
4
is hydrogen; or C
1
-C
3
alkyl; R
5
is hydrogen; hydroxy; C
1
-C
3
-alkoxy; or -0-(CO)—R
10
; R
6
is hydrogen; C
1
-C
3
alkyl; or COR
8
; or R
5
and R
6
together may form a five or six membered ring; or R
6
and R
7
together form a five or six membered ring; and R
8
, R
9
, R
10
independently of each other are C
1
-C
30
alkyl; for protecting body-care and household products from photolytic and oxidative degradation.
Late transition metal catalysts for olefin polymerization and oligomerization
申请人:Cherkasov Kuzunich Vladimir
公开号:US20060047094A1
公开(公告)日:2006-03-02
This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is a substituted or unsubstituted catecholate ligand provided that the substituted catecholate ligand does not contain a 1,2-diketone functionality.
A process is described for preparing novel polyurethane polymers which have good impact resistance and other desirable physical properties, said process comprising interpolymerizing a mixture of a bicyclic amide acetal, a polyol and a polyisocyanate.
A process for removing water from its mixture with hydroxyl containing compounds by adding a bicyclic amide acetal to such mixture and allowing the water to react with the bicyclic amide acetal is disclosed.