Skin Sensitizer - An agent that can induce an allergic reaction in the skin.
Asthma - Reversible bronchoconstriction (narrowing of bronchioles) initiated by the inhalation of irritating or allergenic agents.
IARC Carcinogen - Class 3: Chemicals are not classifiable by the International Agency for Research on Cancer.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on the left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Poisons A and B/
In male B6C3F1 mice, 75% of the dose was absorbed 72 hours after a single application of 1.2 mg/kg. The percent dose remaining at the dose site was higher in mice (31%) than in rats (9%). Approximately 42% of the applied dose was recovered in urine, feces, and exhaled carbon dioxide 72 hours after application, an amount similar to that excreted by rats (45%) following dermal application of 1.7 mg/kg. The radioactivity associated with tissues at 72 hours was less than 1%. The nonapplication site skin had an elevated tissue:blood ratio.
Metabolism and disposition of (14)C-trimethylolpropane triacrylate was investigated in male F344/N rats and B6C3F1 mice following single intravenous administration and dermal application (protected from oral grooming). In male rats, the percent dose absorbed was 55.7%, 32.7%, or 18.7% at 72 hours following dermal application of 1.7, 15.2, or 130 mg/kg. In mass terms, approximately five times more trimethylolpropane triacrylate was absorbed as the dose concentration increased by one order of magnitude. About 9% of the dose was recovered from the dose site regardless of the applied dose. About 45%, 19%, or 5% of the applied dose was recovered in the excreta 72 hours after dermal application of 1.7, 15.2, or 130 mg/kg, respectively. The radioactivity associated with tissues at 72 hours was less than 1%. The kidney had elevated tissue:blood ratios at each dose. Following intravenous administration of 9.4 mg/kg (14)C-trimethylolpropane triacrylate in male rats, a total of 77.4% of the applied dose was excreted in urine, feces, and exhaled carbon dioxide 72 hours after administration. Among the tissues collected, the highest radiolabeled concentration was associated with blood.
After a single 124 mg/kg dermal application of (14)C-trimethylolpropane triacrylate in male rats followed by tape stripping the application site at 72 hours, most of the radioactivity associated with the dose site was trimethylolpropane triacrylate thereby confirming that the test article was stable on the skin.
[EN] CLEAVABLE MULTI-ALCOHOL-BASED MICROCAPSULES<br/>[FR] MICROCAPSULES CLIVABLES À BASE D'ALCOOLS MULTIPLES
申请人:FIRMENICH & CIE
公开号:WO2021023645A1
公开(公告)日:2021-02-11
The present invention relates to a new process for the preparation of microcapsules based on cleavable multi-alcohols. Cleavable multi-alcohol-based microcapsules are also an object of the invention. Perfuming compositions and consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.
The present invention provides a base generator having the structure of formula (1):
wherein R
1
, R
2
, R
3
, R
4
, R
5
, and Y
circle around (−)}
are defined as in the specification. The base generator of the present invention can be used for imidization of a polyimide precursor, promoting crosslinking of epoxy monomers, or crosslinking of polyurethane or polyurea.
本发明提供了一种具有公式(1)结构的碱发生器:
其中R1、R2、R3、R4、R5和Ycircle around (−)}如说明书中所定义。本发明的碱发生器可用于聚酰亚胺前体的酰亚胺化,促进环氧单体交联,或聚氨酯或聚脲的交联。
COMPOSITION THAT CAN BE CURED BY POLYMERISATION FOR THE PRODUCTION OF BIODEGRADABLE, BIOCOMPATIBLE, CROSS-LINKABLE POLYMERS ON THE BASIS OF POLYVINYL ALCOHOL
申请人:Liska Robert
公开号:US20100303804A1
公开(公告)日:2010-12-02
The present invention relates to a polymerization-curable composition for the preparation of biodegradable, biocompatible, cross-linked polymers on the basis of polyvinyl alcohol comprising: 5 to 100% by weight of (a) vinyl ester monomer(s) of one of the general formulas (I) to (III):
wherein X is oxygen, sulfur, nitrogen, or phosphorus; n is 1 to 1000, at least 20% of the n being ≧2; the R
1
are selected from hydrogen; straight, branched or cyclic, saturated or unsaturated, n-valent hydrocarbon groups having 1 to 30 carbon atoms, which optionally have heteroatoms and are optionally substituted with one or more substituents selected from —OH, —COON, —CN, —CHO, and ═O, and n-valent radicals of biodegradable, biocompatible oligomers and polymers; m is an integer from 1 to 5; the R
2
are selected from hydrogen, —OH, ═O, and the options listed for R
1
; and the R
3
are selected from hydrogen, —OH, and the options listed for R
1
; 0 to 50% by weight of ethylenically unsaturated co-monomers; 0 to 10% by weight of (a) polymerization initiator(s); and 0 to 95% by weight of solvent(s).
[2 + 2 + 1] Cycloaddition of <i>N</i>-tosylhydrazones, <i>tert</i>-butyl nitrite and alkenes: a general and practical access to isoxazolines
作者:Liang Ma、Feng Jin、Xionglve Cheng、Suyan Tao、Gangzhong Jiang、Xingxing Li、Jinwei Yang、Xiaoguang Bao、Xiaobing Wan
DOI:10.1039/d1sc02352g
日期:——
N-tosylhydrazones has not been examined. Herein, we report the first demonstrations of [2 + 2 + 1] cycloaddition reactions that allow the facile synthesis of isoxazolines, employing N-tosylhydrazones, tert-butyl nitrite (TBN) and alkenes as reactants. This process represents a new type of cycloaddition reaction with a distinct mechanism that does not involve the participation of nitrile oxides. This
reaction that is free of base, acid and catalyst, using only 2-methyltetrahydrofuran as additive has been performed. A new family of mono-, di-, tri- and tetra-phosphines compounds are obtained in good to excellent yields by adding diphenylphosphine to alkenes, mono- and polyfunctional acrylics (based on acrylate and methacrylate motifs) and acrylamide substrates. Addition of four equivalent of bio-mass