$productIds = [1,2,34]; // List of product Ids
$productAttribute = \Magento\Framework\App\ObjectManager::getInstance()
->create('Magento\Catalog\Model\ResourceModel\Product\Action');
$productAttribute->updateAttributes($productIds,
['name' => 'New Name for all product'], // List of attribute you want to update NVP
$storeId
);
Idea gets from best-way-to-update-products-attribute-value