Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-03-13
1991-02-26
Short, Patricia
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
264544, 524539, C08L 6702, B29C 5100
Patent
active
049962698
ABSTRACT:
This invention relates to a thermoplastic resin composition which is particularly suitable for use in thermoforming thin walled articles. The thermoplastic resin compositions are comprised of (1) from about 94 to about 99 weight percent polyethylene naphthalate and (2) from about 1 to 6 weight percent of at least one polyester elastomer. The subject invention also deals with thermoforming such thermoplastic resin compositions into articles, such as food trays, having a crystallinity within the range of about 10% to about 40%.
REFERENCES:
patent: 3960807 (1976-06-01), McTaggart
patent: 4572852 (1986-02-01), Gartland
Richeson Donald E.
Tweedie Judith A.
Rockhill Alvin T.
Short Patricia
The Goodyear Tire & Rubber Company
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