Surface treated embossing catalyst and the use thereof
AssigneeCongoleum Corporation
InventorsAnthony A. Parker, Thomas E. Janini, Peter Rohrbacher
Life of this patent
Estimating the term…
Abstract
The present invention relates to a new class of blowing inhibitors and a method for discovering such inhibitors with determinable inhibition activities. The new class of blowing inhibitors are organo-silanes that may be directly adsorbed onto active catalytic sites of blowing catalysts and that can inhibit the thermo-catalytic efficiency of such catalysts.
Claims28
A modifier for controlling decomposition of a blowing agent having a decomposition temperature comprising:
- a catalyst having an effective capability to reduce the blowing agent decomposition temperature;
- and
- an organo-silane adsorbed onto the catalyst, the organo-silane capable of inhibiting the effectiveness of the catalyst.
A gel layer for forming a chemical embossing layer of a multi-layer covering comprising:
- at least one foamable polymer;
- a blowing agent having a decomposition temperature and capable of evolving gas and forming a plurality of bubbles in the foamable polymer during decomposition thereof;
- a catalyst capable of reducing the decomposition temperature of the blowing agent;
- and
- an organo-silane capable of modifying the capability of the catalyst to reduce the decomposition temperature of the blowing agent.
A method for controlling decomposition of a blowing agent catalyzed by a catalyst, the blowing agent and catalyst mixed in a foamable polymer of a chemical embossing layer, the method comprising the steps of:
- modifying a catalyst for a blowing agent with an organo-silane to produce a modified datalyst;
- and
- heating a chemical embossing layer containing the modified catalyst and the blowing agent, whereby the blowing agent decomposes at a temperature different from a decomposition temperature of the blowing agent in the presence of the catalyst.
A method of identifying a modifier for controlling activity of a catalyst for decomposition of a blowing agent, the method comprising the steps of:
- adsorbing a candidate modifier onto the catalyst to produce a modified catalyst;
- combining the modified catalyst and a blowing agent to produce a combined modified catalyst and blowing agent composition;
- measuring a decomposition temperature of the combined modified catalyst and blowing agent composition;
- and
- identifying the candidate modifier as a modifier based on the decomposition temperature.
Dependencies are inferred from the claim text.