Publication

High-molecular-weight, water-soluble polyammonium compounds

Jutta Christine Wandrey
1977
Patents

Abstract

High-mol. wt., water-sol. compds., useful for nonsticky coatings on elec. conductive paper are manufd. by polymn. of 0.01-5 mol.% Z(CO2CH2CR:CR'R2)2 (Z = (CH2)n, (CH:CH)m, O(CH2CH2)p O, arylene, cycloalkylene, n = 0-20; m = 1-4, p = 0-5, R, R1, R2 = H, C1-6 alkyl, C5-6 cycloalkyl), e.g. diallyl maleinate, and a dialkenyldialkylammonium compd., e.g. diallyldimethylammonium chloride, in H2O in an inert atm. at 50-100 Deg. [on SciFinder (R)]

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Jutta Christine Wandrey
1977
Patents

Abstract

Official source

Related concepts (5)

Weight

In science and engineering, the weight of an object is the force acting on the object due to acceleration or gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Yet others define it as the magnitude of the reaction force exerted on a body by mechanisms that counteract the effects of gravity: the weight is the quantity that is measured by, for example, a spring scale.

Mass versus weight

In common usage, the mass of an object is often referred to as its weight, though these are in fact different concepts and quantities. Nevertheless, one object will always weigh more than another with less mass if both are subject to the same gravity (i.e. the same gravitational field strength). In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define), but weight is the force exerted on an object's matter by gravity.

Alkyne

Acetylene Propyne 1-Butyne In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbon—carbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula . Alkynes are traditionally known as acetylenes, although the name acetylene also refers specifically to , known formally as ethyne using IUPAC nomenclature. Like other hydrocarbons, alkynes are generally hydrophobic.