A wood preservative that comprises as an active ingredient a Piper methysticum, plant or a processed product thereof or a compound represented by Formula (I):
1
wherein R
1
, R
2
, R
3
, R
4
and R
16
are same or different and each denotes a hydrogen atom, hydroxy or a C
1-4
alkoxy, or R
1
and R
2
are taken together to form a group represented by —O—(CH
2
)
n
—O— wherein n is an integer of 1 to 3, R
5
is a C
1-4
alkoxy and X is —CH=CH—, —CH
2
—CH
2
— or epoxyethylene, and the bond:
denotes a single bond or a double bond can prevent the attacking wood by an insect harmful to the wood and also prevents the appearance and the growth of a wood-rotting fungus or a wood- staining fungus while being highly safe to humans and animals without exerting no adverse effect on the environment.
Benzylidene hydantoin derivative, ultraviolet ray absorbent and external preparation for skin including the same
申请人:SHISEIDO COMPANY LIMITED
公开号:EP0632029A1
公开(公告)日:1995-01-04
A benzylidene hydantoin derivative represented by the following formula (1).
(In the formula, R¹ represents a straight or branched alkyl group having 1-8 carbon atoms and R² represents a branched alkyl group having 5-18 carbon atoms.)
The derivative has excellent UV-A absorptivity and usability.
Ultraviolet light absorbing ketones of 2-(2-Hydroxyphenyl) benzotriazole
申请人:Chang Chia-Hu
公开号:US20100086500A1
公开(公告)日:2010-04-08
The invention relates to ultraviolet light absorbing compounds, their preparation and uses as protective agents and stabilizers in coatings, plastics and topically applied products. The compounds are ketone derivatives of 2-(2-hydroxyphenol) benzotriazole of formula I,
where R
1
is hydrogen atom, or a halogen atom, or a straight-chain or branched lower alkyl or lower alkoxy of 1 to 4 carbon atoms; R
2
is an unsubtituted or substituted aryl group or an unsubstituted or substituted straight-chain or branched alkyl having 1 to 18 carbon atoms or a cycloaliphatic group having 5 to 6 carbon atoms; and R
3
is a straight-chain or branched alkyl or alkylaryl group or alkoxyl or phenyl or phenyl substituted with alkyl, cycloalkyl, carboalkoxy, chlorine or arylalkyl groups.
POLYMERIZABLE DENTAL COMPOSITION BASED ON CONDENSED SILANES
申请人:VOCO GmbH
公开号:US20210052469A1
公开(公告)日:2021-02-25
The present invention relates to novel polymerizable dental compositions comprising, (A) polysiloxanes, wherein the polysiloxanes comprise a mixture of the condensates of the three silanes (a1), (a2) and (a3) and/or a cocondensate of a mixture of the three silanes (a1), (a2) and (a3) and/or a mixture of at least two of the cocondensates (a1)/(a2), (a1)/(a3) and (a2)/(a3) and/or a mixture of the condensate of one of the three silanes (a1), (a2) or (a3) with the cocondensate of the other two silanes, (B) fillers and (C) initiators and/or catalysts and/or activators for the polymerization.
USE OF FREE RADICALLY CURABLE COMPOSITIONS IN ADDITIVE MANUFACTURING METHODS
申请人:VOCO GmbH
公开号:US20160128909A1
公开(公告)日:2016-05-12
The present invention relates to the use of free-radically curable compositions, comprising chain-like and/or cyclic and/or cage-type polysiloxanes substituted by free-radically polymerizable groups and having at least 3 silicon atoms and/or mixed forms thereof, disiloxanes substituted by free-radically polymerizable groups, optionally one, two, three or more free-radically curable monomers having no silicon atom, fillers, initiators and/or catalysts for free-radical polymerization, and also further customary additives, in additive manufacturing methods, preferably in stereolithography (SL) and digital light processing (DLP). The present invention further relates to the use of the cured free-radically curable compositions, preferably for production of dental products.