Eastman-kodak Company

Harry R Musser

Burns Davis

Randy S Beavers

Finley E McFarlane

Winston J Jackson, Jr

Robert Boyd Barbee

Joseph S Zannucci

David E Mills

Freddie A Shepherd

Burns Davis, Deceased

Theodore F Gray, Jr

Thomas H Strickland

Unoriented polyester sheet materials and molded articles having a thickness of at least 10 mil and having excellent clarity and heat stability. The polyester used in the manufacture of the sheet materials and molded articles are derived from terephthalic acid and 1,4-butanediol and certain modifying monomers. Methods for manufacturing the aforesaid sheet materials and molded articles.

Polyester sheet materials and molded articles and methods for the

Disclosed are polyesterether bonding compositions comprising repeating units from trans-1,4-cyclohexanedicarboxylic acid, a difunctional sulfomonomer, a polyetherglycol, and 1,4-cyclohexanedimethanol.

Copolyesterether bonding compositions and shaped articles utilizing the

Disclosed is multi-layered sheet material comprising a layer of polyethylene terephthalate and a layer of an elastomeric copolyesterether. This sheet material is useful in packaging applications where resistance to flex cracking is important.

Laminated structures of polyethylene terephthalate and elastomeric

Disclosed are stabilized polyester compositions having significantly improved weatherability. These polyesters consist of copolyesterethers derived from a dicarboxylic acid component comprising about 80-100 mole % 1,4-cyclohexanedicarboxylic acid having a trans isomer content of at least 70% and about 0-20 mole % of a second dicarboxylic acid and a glycol component comprising about 70-95 mole % 1,4-cyclohexanedimethanol and about 5-30 mole % of a polyalkylene ether glycol having a molecular weight of about 600 to about 3000. The copolyesterether compositions further comprise a stabilizing effective amount of the combination of (1) at least one hindered phenolic antioxidant, (2) at least one ultraviolet light stabilizing compound compatible with said copolyesterether and (3) at least one hindered amine light stabilizing compound having the formulae ##STR1## the groups shown as R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently selected from various substituents.

Stabilized copolyesterether compositions suitable for outdoor

Disclosed are copolyesterethers having an inherent viscosity of from about 0.8 to about 1.5 comprising

Copolyesterethers

Disclosed are high melt strength, blow-moldable polymers that can be formed into bottles, tubing, film and the like. The polymers are copolyetheresters having an inherent viscosity of from 1.0 to about 2.5 comprising

Copolyetheresters

Disclosed is a poly(hydrazone-hydrazide) prepared from difunctional acid chlorides and 4-(hydrazonomethyl)benzoic acid hydrazide. The poly(hydrazone-hydrazide) contains repeating units corresponding to the structure: ##STR1## Films of this polymer have unobviously high tensile and tear strengths without the necessity of biaxially orienting the film.

Poly(hydrazone-hydrazine)

Disclosed is 4-(hydrazonomethyl)benzoic acid hydrazide having the structure ##STR1## This compound can be prepared from methyl formyl benzoate and hydrazine. This compound can be prepared into a polymer by condensation with difunctional acid chlorides. Films of the polymer have unobviously high tensile and tear strengths without the necessity of biaxially orienting the film.

4-(Hydrazonomethyl)benzoic acid hydrazide

Disclosed is an unsaturated polyester containing formal linkages. The polyester is comprised of the following repeating unit ##STR1## wherein X is a positive integer from 2 to 10, R is the divalent radical remaining after removal of the terminal carboxyl group from an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid, and R' is the divalent radical remaining after removal of the terminal hydroxyl groups from an aliphatic or cycloaliphatic glycol. The polyesters of this invention exhibit a combination of a desirable hardness and a desirable impact strength upon curing.

Unsaturated polyester containing formal linkages

Disclosed is a process for preparation of copolymers which have an inherent viscosity of at least 0.4 and are formed from polyesters and aliphatic polyformals. The process comprises contacting within a temperature range of 220.degree. to 280.degree.C. a poly(tetramethylene terephthalate) type polyester and selected aliphatic polyformals.

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Kingsport, TN, United States of America

Harry R Musser