摘要:
A photochromic polyurethane film of improved light fatigue resistance is disclosed. A stabilizer system combining two hindered amine light stabilizers and one phenolic antioxidant is incorporated in the photochromic polyurethane film in an amount so that the film will have more than 40% of light fatigue improvement and less than 6 units in Deltab* of CIELAB system after a given light fatigue test. The film can be conveniently laminated between two transparent plastic sheets and incorporated into a plastic article.
摘要:
The present invention is directed to an aqueous process for reducing particle size of organic pigments by milling the crude pigment in the presence of a water soluble styrene copolymer dispersants, optionally a defoamer, optionally an additive, and greater than about 10 wt. water, and isolating the organic pigment. The invention is also directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.
摘要:
Embodiments of the present invention are directed to polymeric compositions of polyethersulfone comprising hindered amine light stabilizer, benzoxazinone-based ultraviolet stabilizer and diphenylacrylate-based ultraviolet stabilizer, and coating, films product, article of manufacture, shaped article and/or a coated article comprising the same.
摘要:
Free radical, energy-curable coating compositions comprising: (a) at least one ethylenically-unsaturated monomer component; and (b) at least one chlorinated polyolefin, wherein the at least one chlorinated polyolefin is at least partly soluble in the at least one monomer component; are described along with processes for coating substrates therewith.
摘要:
A UV-protective composition comprising a water-soluble polyaminoamide containing 1,3-diimine groups, wherein the polyaminoamide containing 1,3-diimine groups absorbs ultraviolet light radiation having a wavelength of about 200nm to about 420nm, and methods of treating substrates with the UV-protective polyaminoamide containing 1,3-diimine groups.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von mono-hydroxyfunktionalisierten Dialkylphosphinsäuren, -estern und -salzen mittels Acroleinen, dadurch gekennzeichnet, dass man a) eine Phosphinsäurequelle (I) mit Olefinen (IV) in Gegenwart eines Katalysators A zu einer Alkylphosphonigsäure, deren Salz oder Ester (II) umsetzt, b) die so entstandene Alkylphosphonigsäure, deren Salz oder Ester (II) mit Verbindungen der Formel (V) in Gegenwart eines Katalysators B zu mono-funktionalisierten Dialkylphosphinsäurederivaten (VI) umsetzt, und c) so entstandene mono-funktionalisierte Dialkylphosphinsäurederivate (VI) in Gegenwart eines Katalysators C zum mono-hydroxyfunktionalisierten Dialkylphosphinsäurederivat (lll) umsetzt, wobei R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 gleich oder verschieden sind und unabhängig voneinander u.a. H, C 1 -C 18 -Alkyl, C 6 -C 18 -Aryl, C 6 -C 18 -Aralkyl, C 6 -C 18 -Alkylaryl bedeuten und X für H, C 1 -C 18 -Alkyl, C 6 -C 18 -Aryl, C 6 -C 18 -Aralkyl, C 6 -C 18 - Alkylaryl, Mg, Ca, AI, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Cu, Ni, Li, Na, K und/oder eine protonierte Stickstoffbase steht und es sich bei den Katalysatoren A und C um Übergangsmetalle und/oder Übergangsmetallverbindungen und/oder Katalysatorsysteme handelt, die sich aus einem Übergangsmetall und/oder einer Übergangsmetallverbindung und mindestens einem Liganden zusammensetzen und es sich bei dem Katalysator B um Peroxide bildende Verbindungen und/oder Peroxoverbindungen und/oder um Azo-Verbindungen und/oder um Alkali- und/oder Erdalkalimetalle, -hydride und/oder -alkoholate handelt.
摘要:
Free radical, energy-curable coating compositions comprising: (a) at least one ethylenically-unsaturated monomer component; and (b) at least one chlorinated polyolefin, wherein the at least one chlorinated polyolefin is at least partly soluble in the at least one monomer component; are described along with processes for coating substrates therewith.
摘要:
This invention describes novel chemical compounds whose structures are hybrids between sulfur-containing and non-sulfur-containing silanes wherein the two types of silanes are linked by siloxane bonds. The invention includes methods of preparation for the hybrid silanes as well as their use in filled rubbers as coupling agents. The hybrid silanes described are unique in that a certain amount of water in their preparation leads to superior performance in their intended application, and that they can thus be produced more efficiently and safely than coupling agents currently used in the art, from readily available hydrated raw materials.
摘要:
An aqueous dispersion containing a latex, an alkaline earth metal formiate, cellulose ether and lauryl sulphonate can be added to a concrete mixture as an auxiliary agent to make the concrete more flexible and reduce shrinkage during setting. Adding the dispersion to concrete mixtures allows also addition of fillers hitherto regarded as toxic to cement.