Abstract: Methods and compositions are described that provide three-dimensional fibrillar matrices useful as, among other things, structural prosthetics and scaffolds for cells. The porous fibrillar matrices of the present invention have desirable mechanical properties suitable to a variety of applications, including platforms for in vitro cell cultivation, implants for tissue and organ engineering, implants as tendon and facia prosthetics, and product packaging.

Abstract: An extruded foamed silicone rubber composition including ammonium carbonate or ammonium bicarbonate reacted with acetic acid at room temperature. The components can be adjusted to control the degree of foaming, and the amount of acetic acid can be adjusted to control the cure rate.

Abstract: Disclosed is an evacuated and unevacuated microcellular foam containing an infrared attenuating agent (IAA). The evacuated foam has an average cell size of about 70 micrometers or less. The unevacuated foam has an average cell size of 1.0 micrometers or less. The IAA provide a greater proportional reduction in foam thermal conductivity in these foams than in foams of larger cell size. Further disclosed is a method of using the foams.

Abstract: A method of treating hazardous material or other substrate with an aqueous air foam, comprising the steps of (1) preparing an aqueous solution or dispersion comprising (a) water-soluble polyhydroxy polymer having a plurality of hydrogen-bondable 1,2- and/or 1,3-diol structures capable of complexation with the borate anion, B(OH).sub.4.sup.

Abstract: A method of treating hazardous material or other substrate with an aqueous air foam, comprising the steps of (1) preparing an aqueous solution or dispersion comprising (a) water-soluble polyhydroxy polymer having a plurality of hydrogen-bondable 1,2- and/or 1,3-diol structures capable of complexation with the borate anion, B(OH).sub.4.sup.

Abstract: A foaming polysiloxane composition providing excellent expansion ratio and expansion control comprising: (A) 100 parts by weight of an .alpha., .omega.-dihydroxyorganopolysiloxane, (B) 0.01-50 parts by weight of an organopolyhydroxypolysiloxane, (C) an organopolyhydrogensiloxane wherein 1 molecule contains at least 2 units represented by the general formula: ##EQU1## and in such quantity that SiH lies within the range of 0.5-30 mole per mole of total silanol groups in components A and B, (D) platinum or platinum compounds in a quantity of 0.1-200 ppm calculated as platinum metal per total weight of said components A, B and C, and (E) an organosilicon compound with acetylenic unsaturated groups in a quantity of 0.001-10 parts by weight per 100 parts by weight of components A,B,C and B; and a cured product thereof were disclosed.

Abstract: A method for producing a phenol foam plastic, consisting in that polycondensation of phenols with formaldehyde is conducted with simultaneous foaming and curing in the presence of a foaming agent and an acid or alkaline catalyst. Used as the phenols are pyrocatechol, hydroquinone, resorcinol, 5-methyl resorcinol, shale alkyl resorcinols, shale total phenols, or various combinations of said phenols. The method is simple and permits obtaining a foam plastic with improved physico-mechanical properties.

Abstract: Access to a space is impeded by the generation of a sticky foam from a tacky polymeric resin and a low boiling solvent.

Abstract: Amino resin foams of the urea-formaldehyde or urea-melamine-formaldehyde type formed from a one-phase solution of methylene chloride solvent, propylene glycol co-solvent, catalyst and polymer precursors which may be urea and formaldehyde or urea, melamine and formaldehyde. As reaction occurs between the polymer precursors in the solution, the methylene chloride in the solution vaporizes foaming the resin. In the product foam, the propylene glycol acts as a plasticizer and the methylene chloride as the blowing agent in a closed-cell foam having superior stability and insulative properties. The product foam is useful in building insulation and for other insulative purposes.