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Latent catalyst

A latent catalyst, catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problems of inability to accelerate curing, complex reaction, and high activation temperature, Achieving excellent pot life

Pending Publication Date: 2021-12-17
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some heat-activated catalyst methods, the activation temperature is too high (eg, 80 degrees Celsius [°C] to 140°C) to accelerate cure; or the reaction is too complex

Method used

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Examples

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example

[0035] The following examples are provided to further illustrate the invention, but should not be construed as limiting the scope of the claims. All parts and percentages are by weight unless otherwise indicated.

[0036] The various terms and names used in the invention examples (INV.Ex.) and comparative examples (Comp.Ex.) are explained in Table I below.

[0037] Table I-raw material

[0038]

[0039] Synthesis of copolymerized crystallization catalyst

[0040] The copolymerized crystalline catalyst of the present invention is prepared in the toluene solution in the toluene solution: mixed with crystalline acrylate monomer, DBTM, initiator AIBN, chain extender, and toluene under slow stirring. Then, the temperature of the resulting mixture was raised to a temperature of 60 ° C to 80 ° C under continuous stirring; and the temperature of the mixture was maintained at 60 ° C to 80 ° C for 24 hours. Thereafter, the mixture was stopped and the mixture was stopped and cooled. The ...

example 1-4

[0042] Four potential catalyst samples of the present invention (Examples 1-4) of the invention were prepared using the procedure of the above synthetic copolymerized crystalline catalyst. In each catalyst sample prepared, the DBTM concentration and the acrylate monomer type have changed; and each of the obtained copolymers exhibits crystallization temperature and melt temperature. Details of the above sample are listed in Table II.

[0043] Table II- copolymerization crystallization catalyst

[0044]

[0045] The use of the potential catalyst prepared in the art is apparent to those skilled in the art; and, for example, in one embodiment, the potenton can be used as an additive in a conventional polyurethane formulation, wherein the polyurethane formulation comprises isocyanate ( NCO) The prepolymer component, such as MF706A (available from Dow Chemical Company) and a hydroxyl (OH) component, such as C79 (available from Dow Chemical).

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Abstract

A copolymerized crystalline latent catalyst including the reaction product of: (a) at least one crystalline acrylate monomer; (b) at least one copolymerizable catalyst compound; (c) at least one initiator; (d) at least one chain transfer agent; and (e) optionally, at least one solvent to provide a polymerized latent catalyst composition; and a process for making the above latent catalyst.

Description

Technical field [0001] The present invention relates to a submerged catalyst; Background technique [0002] For the purpose of simplification, the thermosetting resin and other curable compositions or formulations require storage stability at normal operating temperatures, and various potential catalysts have been previously developed for this purpose. In general, the potentula means a catalyst having excellent storage stability at a usual operating temperature (e.g., ambient temperature, i.e., 25 ° C). A potentially producing adequate storage stability does not exhibit its catalytic activity in a normal operating low temperature (not promoted or becoming active) until heated to a temperature higher than the operating temperature. Therefore, the catalyst has catalytic activity at high temperature heating. The potentifier is used in the formulation to increase the storage stability of the preparation (also known as a storage period or applicability). However, it is also desirable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08F265/04C08F265/02C08F265/06
CPCC08F2/44C08F220/1818C08G18/246C08G18/10C08F230/04B01J31/1658B01J31/2208B01J2531/42C08F120/68
Inventor 白晨艳陈红宇T·施密特余英丰董海军
Owner DOW GLOBAL TECH LLC
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