Process for preparing shear degradable particle-containing resin

Details Process for preparing shear degradable particle-containing resin Process for preparing shear degradable particle-containing resin

1975-12-19

1977-11-08

Thurlow, Jeffrey R.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

260 4222, 264 75, 264108, 264111, 264141, 264211, 264349, 427195, 264323, C08K 308

Patent

active

040576078

ABSTRACT:
There is disclosed a process for preparing shear degradable particle-containing resin powders. This process comprises (a) preparing a first composition comprising shear degradable particles and molten resin in the absence of high shearing forces on the particles, (b) intimately blending the first composition with a second composition comprising molten resin and curing agent to form a shear degradable particle-containing molten resin mixture in the absence of high shearing forces on the shear degradable particles, (c) solidifying this shear degradable particle-containing molten resin mixture, and (d) grinding the solidified mixture to desired particle size. The particles may then be classified according to particle size.
The final powder particles contain shear degradable particles or flakes in substantially undegraded form. The powder particles are especially useful in powder coating applications such as in automobile and appliance topcoats.

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