Hubert J. Fabris - Akron OH David P. Gruber - Cuyahoga Falls OH David R. Sponseller - Akron OH Heinz Uelzmann - Tallmadge OH
Assignee:
The General Tire & Rubber Company - Akron OH
International Classification:
C08F29904 C08G 218 C08G 1222 C08G 8102
US Classification:
260839
Abstract:
Novel products can be prepared by reaction of monohydrazides and/or polyhydrazides, in particular dihydrazides, with mono-, di- or, poly-acrylyl compounds. The reactants can be chosen such that the resulting polymers are strictly linear as in the case of reaction of a monohydrazide with a diacrylyl compound as follows: ##STR1## wherein each (O) is a carbonyl oxygen, n is a positive integer, each R is hydrogen or a monovalent group, and each Q is an organic group, R and Q being free of functions which would interfere with the desired reaction at 80. degree. C. Various degrees of crosslinking can be achieved by reacting monohydrazdes with components containing an average of more than two acrylate double bonds per molecule or by reacting di-hydrazides with di- or poly-acrylyl compounds. Fumaric, maleic and itaconic esters and acid esters add to hydrazides in a similar fashion as acrylates, the aliphatic double bond being similarly activated by the carbonyl group. However, methacrylates are totally inert to hydrazide at 80. degree. C.
Copolymers Of Hydrazides And Certain Unsaturated Esters
Hubert J. Fabris - Akron OH David P. Gruber - Cuyahoga Falls OH David R. Sponseller - Akron OH Heinz Uelzmann - Tallmadge OH
Assignee:
The General Tire & Rubber Company - Akron OH
International Classification:
C08G 6700 C08G 6900 C08G 1810
US Classification:
526 111
Abstract:
Novel products can be prepared by reaction of monohydrazides and/or polyhydrazides, in particular dihydrazides, with mono-, di- or, poly-acrylyl compounds. The reactants can be chosen such that the resulting polymers are strictly linear as in the case of reaction of a monohydrazide with a diacrylyl compound as follows: ##STR1## WHEREIN EACH (O) is a carbonyl oxygen, n is a positive integer, each R is hydrogen or a monovalent group, and each Q is an organic group, R and Q being free of functions which would interfere with the desired reaction at 80. degree. C. Various degrees of crosslinking can be achieved by reacting monohydrazides with components containing an average of more than two acrylate double bonds per molecule or by reacting di-hydrazides with di- or poly-acrylyl compounds. Fumaric, maleic and itaconic esters and acid esters add to hydrazides in a similar fashion as acrylates, the aliphatic double bond being similarly activated by the carbonyl group. However, methacrylates are totally inert to hydrazide at 80. degree. C.
swab animals for DNA and take minimally invasive biopsies without sacrificing the creatures. The aim is to be able to give floating animals in the deep sea something akin to a doctors checkup, says David Gruber, a marine biologist at the City University of New York and a leader of the study. Wer
Date: Jan 25, 2024
Category: Science
Source: Google
Scientists develop 'shark-eye' camera To Study Sea Giants
Paper author David Gruber, an associate professor of biology at Baruch College and a research associate at the American Museum of Natural History, said, "Our next question was 'What does all this newfound biofluorescence we are finding in the ocean mean? Can these animals see other animals that are "The cool thing about this research is it literally shines a light on animals that are often overlooked," says David Gruber, the study's lead author and a National Geographic Emerging Explorer, who is also a researcher at Baruch College, City University of New York and the American Museum of Natural
"Our next question was 'What does all this newfound biofluorescence we are finding in the ocean mean?" said paper author David Gruber, an associate professor of biology at Baruch College and a research associate at the American Museum of Natural History. "Can these animals see other animals that are
Date: Apr 26, 2016
Source: Google
Scientists Develop Camera that Stimulates How Sharks See Each Other
patterned fluorescent paint that converts blue light into green. They would stand out like a sore thumb. That's what these sharks are doing. Lead author David Gruber a researcher at Baruch College, City University of New York and the American Museum of Natural History told National Geographic.
Date: Apr 26, 2016
Source: Google
This New Camera Shows You The Glow-In-The-Dark World Sharks See
As study author David Gruber, an associate professor of biology at Baruch College and a research associate at the American Museum of Natural History, said in a statement:"What does all this newfound biofluorescence we are finding in the ocean mean?"
Can these animals see other animals that are biofluorescing in the deep blue sea? wondered co-author David Gruber, an associate professor of biology at Baruch College, in a statement. And are they using it in some way?
th a shifted wavelength so that it appears slightly different. But that all looks very different underwater, especially deep down where these live, since the ocean is a huge blue filter, David Gruber, a marine biologist at Baruch College and one of the authors of the paper, told The Atlantic.
Date: Apr 25, 2016
Source: Google
Ebola missteps raise questions about readiness for pandemics
Some of the errors in the Dallas response may be more about human snafus than a lack of planning, said David Gruber, assistant commissioner for regional and local health services for the Texas Department of State Health Services.
Date: Oct 06, 2014
Category: Health
Source: Google
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