Leaks in the old copper roofs of Hamilton, Dodge, and Kent Halls at Columbia University were stopped by application of a vinyl-spray plastic membrane. (Author)

This paper discusses the thermoplastic and thermosetting resins presently being used by the artist, and the potential for exposure to the toxic chemicals and other hazards during the development of his creative work. (Author)

The first in a series of articles on implementing a plastics course in the junior high or senior high school industrial arts program. (Editor)

This California program has students learn and earn at the same time. (GB)

Here is a great substitute for parting compounds. (Editor)

An underwater camera case is constructed for a fraction of retail costs. (GB)

The properties of a dendrimer with hydrophobic and hydrophilic substituents on an orthogonal plane is synthesized and studied. The resulting polymer contains one of the substituents in its concave interior and the other at the convex surface and the design promotes micelle-like behavior in polar solvent and inverted micelle arrangement in…

The production of a GPC-based material by submitting a cross-linked resin precursor to control thermal conditions is discussed. The precursor material is prepolymerized at 60-degree Celsius in a mold and is carbonized in inert atmosphere by slowly raising the temperature, the rise is performed to avoid change in the shape of the carbonization…

The position of industry vs. that of Government-labor-ACS on the proposed work-place standard for vinyl chloride is specified. (DT)

A new plastic mold design is developed with the aid of etched photo-sensitive plates. This activity teaches graphic arts as well as metals and plastics. (GR)

Schools and colleges see plastic bubbles as education's newest bag. (Author)

A step-by-step procedure for forming urethane plastic products for school shop experimentation. (GB)

Outlines a method of constructing a thermoforming machine at a fraction of the market price. (GB)