Water-blown silicone foam

Details Water-blown silicone foam Water-blown silicone foam

1986-03-03

1986-09-23

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 65, 521 71, 521 98, 521110, 521111, 521154, 528 15, 528 31, 528 32, C08J 914, C08J 930

Patent

active

046136304

ABSTRACT:
This invention relates to a method of producing silicone elastomeric foam of low density. The method mixes polydiorganosiloxanes having hydroxyl endblocking or vinyl endblocking or mixtures of both along with water to react with silicon hydride in the presence of platinum catalyst to release hydrogen gas to create a froth which cures to a foam. The combination of ingredients allows the manufacture of silicone foam having different combinations of properties than those obtained from previous methods. Embodiments of the invention also make use of specific profoamers and specific alcohols to further modify the properties of the foams produced. The method of this invention yields a low cost, low density, silicone elastomeric foam having physical properties which enable it to be used in cushioning and sealing applications.

REFERENCES:
patent: 3070555 (1962-12-01), Bruner
patent: 3425967 (1969-02-01), Modic
patent: 3428580 (1969-02-01), Nitzche et al.
patent: 3923705 (1975-12-01), Smith
patent: 4026843 (1977-05-01), Kittle
patent: 4026845 (1977-05-01), Kim et al.
patent: 4189545 (1980-02-01), Modic

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