ORIENTED POLYLACTIC ACID POLYMER BASED FILM

• Main Authors: PERCHA PAMELA A, ANDREW J WITTE, KALISH JEFFREY P, DEHN DEREK J, KADOMA IGNATIUS A, GIVOT BRADLEY L, MERRILL WILLIAM W
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

In one embodiment, a film is described comprising a mixture of semi-crystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) midpoint as measured by differential scanning calorimetry of at least 25 DEG C; and plasticizer; wherein the film is oriented. In another embodiment, a film is described comprising a mixture comprising semi-crystalline polylactic acid polymer, polymer having a midpoint Tg as measured by differential scanning calorimetry of at least 25 DEG C, and plasticizer; wherein the mixture exhibits a single midpoint Tg and the singlemidpoint Tg ranges from 40 DEG C to 65 DEG C; and wherein the film is oriented and the oriented film exhibits a higher midpoint Tg ranging from 40 DEG C to 65 DEG C and a lower midpoint Tg ranging from 5 to 25 DEG C. 在个实施方案中，描述了种膜，其包含以下物质的混合物：半结晶的聚乳酸聚合物；具有通过差示扫描量热法测量的至少25℃的玻璃化转变温度(Tg)中点的聚乙酸乙烯酯聚合物；和增塑剂；其中所述膜是取向的。在另个实施方案中，描述了种膜，其包含混合物，该混合物包含：半结晶的聚乳酸聚合物、具有通过差示扫描量热法测量的至少25℃的中点Tg的聚合物、和增塑剂；其中所述混合物具有单中点Tg，并且所述单中点Tg在40℃至65℃范围内；并且