A novel polymerizable composition, which can be used in 1K aerosol can systems for forming a foam, include a reactive precursor mixture, which is subjected to one or more deoxygenation measures so that it does not react during storage, and an alkyl metal compound, such as an organic borane compound as initiator. Since the initiation of the polymerization is enabled by oxygen, particularly oxygen from ambient air, the curing of the composition is not dependent on ambient moisture and proceeds even at low temperatures, including those below 0° C. The composition has a fast curing time when contacted with oxygen or air, and the resulting final cured product has a high quality.

A novel polymerizable composition, which can be used in 1K aerosol can systems for forming a foam, include a reactive precursor mixture, which is subjected to one or more deoxygenation measures so that it does not react during storage, and an alkyl metal compound, such as an organic borane compound as initiator. Since the initiation of the polymerization is enabled by oxygen, particularly oxygen from ambient air, the curing of the composition is not dependent on ambient moisture and proceeds even at low temperatures, including those below 0° C. The composition has a fast curing time when contacted with oxygen or air, and the resulting final cured product has a high quality.

The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.

The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.

A method of forming foam material is provided, which includes mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound. The foaming composition is heated to 100° C. to 170° C. for decomposing the carbamate salt into CO.sub.2 and amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form the foam material.

The present invention relates to open- and fine-celled rigid polyurethane foams which contain not only urethane groups (PUR) but also isocyanurate groups (PIR) and carbodiimide groups (CD) and to the use thereof in vacuum insulation panels.

The present invention relates to open- and fine-celled rigid polyurethane foams which contain not only urethane groups (PUR) but also isocyanurate groups (PIR) and carbodiimide groups (CD) and to the use thereof in vacuum insulation panels.

A coating created entirely from plant-derived ingredients is disclosed. Illustrative embodiments of the coating may be particularly well suited for use on leather-like materials created from epoxidized natural rubber-based formulations. Illustrative embodiments of the coating created may be comprised of substantially the reaction product between epoxidized vegetable oil and a polyfunctional naturally occurring acid (such as citric acid). Illustrative embodiments this reaction product may be used to produce porosity-free castable resins and vulcanize rubber formulations based on epoxidized natural rubber. Materials made from disclosed materials may be advantageously used as leather substitutes.

A foamable silicone composition, includes: (a) at least one organopolysiloxane containing at least two alkenyl groups bonded to silicon atoms per molecule, (b) at least one organopolysiloxane containing at least two hydrogen atoms bonded to silicon atoms per molecule, (c) porogenic agents generating gaseous hydrogen in the presence of component (b) comprising (c1) an organopolysiloxane containing at least one hydroxyl group bonded to silicon atom per molecule and (c2) water, and (d) hydrosilylation catalyst; with the proviso that the ratio of the number of moles of hydroxyl groups provided by component (c2) to that provided by component (c1) is within a range of from 1:5 to 20:1. The composition has a low viscosity and a relatively high pot life, and the foam cured therefrom has a low density, uniform porosity and fine cell structure.

A foamable silicone composition, includes: (a) at least one organopolysiloxane containing at least two alkenyl groups bonded to silicon atoms per molecule, (b) at least one organopolysiloxane containing at least two hydrogen atoms bonded to silicon atoms per molecule, (c) porogenic agents generating gaseous hydrogen in the presence of component (b) comprising (c1) an organopolysiloxane containing at least one hydroxyl group bonded to silicon atom per molecule and (c2) water, and (d) hydrosilylation catalyst; with the proviso that the ratio of the number of moles of hydroxyl groups provided by component (c2) to that provided by component (c1) is within a range of from 1:5 to 20:1. The composition has a low viscosity and a relatively high pot life, and the foam cured therefrom has a low density, uniform porosity and fine cell structure.