A ceiling consisting of metal panels (1) and a support structure (2) for them is described, which carries flexible tubes (4) through which flows a heating or cooling medium for obtaining a desired room temperature. The tubes are combined in the form of a mat and lie loosely and directly upon said metal panels.

A pop up display device is constructed from two blanks and a closed loop of resilient material. Each blank consists of a central polygonal panel to each edge of which is hingedly attached a pentagonal flap, which is further bounded by two inner sides flanking the side common to the flap and panel and two outer sides. At least one outer side of each flap may have a tab portion. The two blanks are placed with their panels in face to face contact and the closed loop is disposed about the periphery ...

A recorder for recording a plurality of measurement quantities on a recording format. The recorder is provided includes a selection unit for selecting one of the plurality of measurement quantities, and a recorder unit for recording discontinuously in a given order the plurality of measurement quantities, and selectively recording continuously the selected one of the plurality of measurement quantities when the selection means selects one of the plurality of measurement quantities.

The invention provides an optical article, such as optical disc substrates and optical fibers, made of a polycarbonate resin suitable for manufacturing articles for optical applications in respect of the high mechanical strength, e.g., high impact strength, and low birefringence by virtue of the unique molecular structure having molecular chain ends stoppered with 4-cumyl phenol as the chain-terminal stopping agent in the polycondensation reaction of a dihydric phenol compound, e.g., bisphenol A...

A synthetic resin pallet is provided with at least one slip preventing member on the upper and or lower surfaces of the deck board. The slip preventing member is made of relatively soft and flexible material, preferably a polyolefin resin.

Disclosed is a board made from fibrous material of vegetable origin, consisting of surface and base layers, wherein one of the base layers is made from activated sludge, the content of the components in the total mass of the board in percent by mass being as follows: The board may additionally contain a binding agent and a precipitating agent.

In making paper from an aqueous papermaking stock a binder comprising colloidal silicic acid and cationic starch is added to the stock for improving the paper or the retention of the stock components, or is added to the white water for reducing the pollution problems or recovering values from the white water. The cationic starch of the binder has a degree of substitution of not less than 0.01, and the weight ratio of cationic starch to SiO.sub.2 is between 1:1 and 25:1.

This invention relates to a new rust-resistant alloy for use at high temperatures, especially in mufflers in automotive vehicles.

Rigid thermoset polyaminoesters are prepared by reacting a mixture of acrylate monomer having an average acrylate functionality of at least 2.5 and aliphatic amine having an average amine hydrogen functionality of at least 3.

This invention relates to a process for the production of polyurethane resins (more particularly foam resins) in which linear polyamines containing at least four tertiary nitrogen atoms are used as catalysts. The compounds correspond to the general formula: ##STR1## wherein the groups R, which may be the same or different, represent methyl or ethyl groups; m represents an integer of from 2 to 7; and the integers n, which may be the same or different, represent 2 or 3.