Abstract: The present invention is a bulk light diffuser material based upon a hydrogenated block copolymer, but including a particulate light diffusing component. The material may be in the form of a film, a sheet or a molded article. When present as a sheet having a thickness of 2 millimeters, the sheet has a percent total transmittance of at least 50% and a haze of at least 70%, measured according to the American Society for Testing and Materials (ASTM) standard D 1003.

Abstract: The present invention is a bulk light diffuser material based upon a hydrogenated block copolymer, but including a particulate light diffusing component. The material may be in the form of a film, a sheet or a molded article. When present as a sheet having a thickness of 2 millimeters, the sheet has a percent total transmittance of at least 50% and a haze of at least 70%, measured according to the American Society for Testing and Materials (ASTM) standard D 1003.

Abstract: A process for preparing a substrate backed with a polymer derived from an organic polyisocyanate, said process comprising the steps of(a) forming a precoat layer of a precoat reaction mixture comprising a substantially difunctional polyahl and a substantially difunctional organic polyisocyanate,(b) separately forming a capcoat layer of a capcoat reaction mixture comprising a polyahl and a polyisocyanate,(c) contacting said precoat layer with one surface of said substrate before said precoat layer is cured to a tack-free state,(d) contacting said capcoat layer with one surface of said precoat layer before at least one of said precoat layer and capcoat layer is cured to a tack-free state,(e) completing curing said capcoat and precoat layer, and(f) cooling the resulting polymer-backed substrate to a temperature less than about 35.degree. C.

Abstract: Gellation resistant aqueous glycol compositions useful as antifreeze compositions are disclosed containing silicates together with other corrosion inhibitors. The silicates are added to the glycol compositions after the other additives have been added and after the composition has been adjusted to a pH range of 7-12. The gellation resistance is obtained or enhanced by the addition of an effective amount of the hydrolyzate of organo-phosphorous-silicon compounds having the formula(RO).sub.3 Si(CH.sub.2).sub.n --O-P(O)(CH.sub.3)--ORwherein R is an alkyl group of 1-4 carbon atoms, and n is an integer of 1-4,A method of improving the gellation resistance of aqueous glycol compositions is also disclosed which comprises adding an effective amount of the above hydrolyzate to the corrosion resistant glycol compositions before or during the silicate addition.

Abstract: Gellation resistant aqueous glycol and glycol ether compositions useful as antifreeze compositions are disclosed containing silicates together with other corrosion inhibitors. The silicates are added to the glycol compositions after the other additives have been added and after the composition has been adjusted to a pH range of 7-12. The gellation resistance is obtained or enhanced by the addition of an effective amount of a glycol soluble ether modified silicone having the repeating units ##STR1## wherein x has an average value range from 1.8 to 6.8y has an average value range from 1 to 4Z has the formula--R--C.sub.n H.sub.2n O--.sub.m R.sub.1wheren is 2 or 3m has an average value such that the average molecular weight of the polyoxyalkylene chain is in the range 100-400R is an alkylene chain of 2-4 carbons andR.sub.1 is selected from the group consisting of hydrogen and alkyl groups of 1-4 carbons.