Release agent

Details Release agent Release agent

1998-07-29

1999-07-06

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Coating repellent

106 3822, 10628714, C09K 318

Patent

active

059192909

ABSTRACT:
A release agent comprising a mixture of (A) a dimethylpolysiloxane and (B) an organopolysiloxane with phenolic hydroxyl groups, said mixture having an average phenol equivalent within the range of 10,000 to 5,000,000 and a dimethylsiloxane oligomer with less than 20 silicon atoms in an amount of less than 5,000 ppm, said agent having a viscosity within the range of 5.times.10.sup.-5 to 1.times.10.sup.-1 m.sup.2 /s at 25.degree. C. The release agent of the present invention possesses excellent heat-resistant and release properties, and suppresses formation of formaldehyde under the effect of thermal decomposition.

REFERENCES:
patent: 4889677 (1989-12-01), Hashimoto et al.
patent: 5130460 (1992-07-01), Kamei et al.
patent: 5138012 (1992-08-01), Riding et al.
patent: 5449712 (1995-09-01), Gierke et al.
patent: 5531814 (1996-07-01), Bahr et al.
patent: 5599778 (1997-02-01), Ishikawa et al.
patent: 5604039 (1997-02-01), Chen et al.

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