Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-12-19
2006-12-19
Acquah, Samuel A. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S438000, C525S439000, C525S441000, C525S444000, C525S445000, C524S399000, C524S435000
Reexamination Certificate
active
07151143
ABSTRACT:
The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation and use of the blend materials. The blends are used, for example, in the production of thermoplastics via low-pressure processes, such as rotational molding and powder coating, without modification of existing equipment. The blends are particularly useful where it is desired to exploit the ability to polymerize and crystallize MPO isothermally, but where the melt viscosity of unfilled MPO is too low for use in existing equipment.
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Baghel Sunita S.
Bahr Steven R.
Takekoshi Tohru
Wang Yi-Feng
Willey Paul
Acquah Samuel A.
Cyclics Corporation
Goodwin & Procter LLP
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