초록 ▼

Compositions of the invention include particular hydroxy-functional polyesters and a natural polymer. Among articles that can be made from such compositions are those with sufficiently strong tensile strengths as to form disposable utensils. However, the compositions are more environmentally friendl

Compositions of the invention include particular hydroxy-functional polyesters and a natural polymer. Among articles that can be made from such compositions are those with sufficiently strong tensile strengths as to form disposable utensils. However, the compositions are more environmentally friendly than commodity plastics such as polyethylene or polystyrene. Starches are particularly preferred as the natural polymers for inclusion in the compositions.

대표청구항 ▼

[ It is claimed:] [1.] A composition of matter comprising:a natural polymer; anda synthetic hydroxy-functional polymer admixed with the natural polymer, the synthetic hydroxy-functional polymer having repeating units represented by Formula I: [ STR 8 ] wherein R.sup.a individually represents a dival

[ It is claimed:] [1.] A composition of matter comprising:a natural polymer; anda synthetic hydroxy-functional polymer admixed with the natural polymer, the synthetic hydroxy-functional polymer having repeating units represented by Formula I: [ STR 8 ] wherein R.sup.a individually represents a divalent organic moiety which is predominantly hydrocarbylene or a combination of different organic moieties which are predominantly hydrocarbylene, R.sup.c is [ STR 9 ] R.sup.d is [ STR 10 ] wherein R.sup.b is a divalent organic moiety which is predominantly hydrocarbylene or [ STR 11 ] R.sup.e is hydrogen or lower alkyl, R.sup.f is independently an organic moiety which is predominantly hydrocarbylene, R.sup.g is independently hydrogen or methyl, n' is an integer from about 0 to about 100, and x' and y' are independently integers from 0 to 100.